Way too loud.

[zigamabob]

I have looked online and asked a couple of people and I have found no answer..so now I will take it to my last resort..the ebaumers.

A couple people know I put in a supercharger a few weeks ago and everything runs great..but it just runs too damn loud!! I mean even idling people can say they hear it, which has resulted in not many races comming my way, and any chance of being a sleeper.

Im just wondering anyone know of some sort of material I can put on the hood, or just another hood to keep the sound muffled. I was thinking maybe tar, but I dont know how tar would hold up to the heat from the engine.

Any ideas would be much appreciated..thanks.

Oh and I already called procharger they said thats how its suppose to sound....a very high pitched..almost whistle sound comming from the engine.

[Danny Lee]

I don't quite know what else you'd have expected from a supercharger, it's 100% Normal.

I mean, look at this:

http://www.zen97015.zen.co.uk/geefawtey.wmv

[DarcSystems]

Most of the sound bounces off the ground, so hood or not, you're gonna hear it.

Why would you wanna race cars that stand no chance anyway? You looking for "kill" stories?

Lame.

[Owned]

*Claps*

That's what a supercharger does, dumbass.

[zigamabob]

Wow no help and just attacks. Darc..no I dont want easy kills, more like some money..but if you wanna call it that..you can. Owned it seems like your the dumbass since the Vortech SQ series can't be heard and its still a supercharger. And I know they are somewhat noisy but even while idling its loud, I just thought there could be something to contain some of the noise..thanks for all the help though. :rolleyes:

[DarcSystems]

Like I said, the noise bounces off the ground. Put whatever hood/hood blanket on your car you want, but your engine compartment is still wide open.

Trying to hustle people with a sleeper is best not done with a mustang...a supercharged mustang nonetheless. If you want to make more money, get a better job. Most people who race don't do it for the cash though.

[zigamabob]

I have gotten a couple races for money, but nothing big. Everytime I race I just put wear on the car, and I would atleast like to recoop some money incase something decides to die.

And I have been sticking to my Cold air intake story...and its worked a couple of times..it is ricer/import central where I live, so most people think a mustang is slow..and american crap etc...I kept a low key exhaust so I wouldnt scare them away, but that damn procharger is a loud bastard.

And im still going to school and working midnights, I probably have the best job I can get for now. Like I said I was just looking for some ideas, but like you said the engine compartment is open..so I guess there isnt much I can do..and I thought about all engine but 2v mustangs, take a whole lot of work to be fast NA and much more expensive than FI.

[skizz0r]

Get a really loud system...or tell them that they are whistles go WOOOOOOOO.

[EeekiE]

Tell them you've got a Vroombox or whatever they're called.

[Spank666]

whistles go WOOOOOOOO.

Thats only for decoration.

[MyBike]

I guess you could buy a fake blow off valve and a fart can dual exhaust system to offset it.

[zigamabob]

Heh got a few good comments. Skizzor, I will try that next time and I will make sure to bring sis too. Oh and if thats your car..very nice. Mybike, thats not such a bad idea, im thinking I get a full body kit, and some neons too, that is atleast an extra 30hp, and the neons will distract them from the sound. Dtorre, I have MAC longtubes, and an offroad midpipe..it isnt very loud just gave it a nice growl, but you can actually hear the supercharger above the exhaust note. And its not a whine, it sounds more like a turbo when it spools up, and it came with a surge valve so it sounds like a blow off. I would of just gone all motor but 4.6 2 valves are crap without FI

[shrapgnar]

....if your worried about the whine then simply buy a boost controller and stay out of boost til race time


whaat since when do they have boost controllers for superchargers?!:err:

[Danny Lee]

And I thought dtorre was the self proclaimed expert? :lol:

[philcoolguy]

whaat since when do they have boost controllers for superchargers?!:err:

They do. It's called "your right foot"

[L4NC3R]

Wow. That's the first in automobile history that someone with a Mustang complained about their supercharger in any way or fashion. Way to make history.

[Kumacho]

About the only suggestion I can make is similar to one already made. Get an exhaust that is so loud that you can no longer hear the whine of the supercharger.

[zigamabob]

Wow. That's the first in automobile history that someone with a Mustang complained about their supercharger in any way or fashion. Way to make history.

I was thinking about getting a turbo..but then I would be just like a Supra...a dyno queen. And yes I know a turbo is efficient compared to a supercharger..doesnt take power to make power, but I am already spinning the wheels, with a turbo it will just be even worse. Oh and Kumacho..yes I thought about that..but then that wont help either because they will be scared away by the exhaust.

[philcoolguy]

If the turbo didn't hit full boost till ~2500-3000 rpms, wouldn't that HELP with wheelspin?

[SmoothKnight]

change the muffler belt, that always quiets it down

[Spank666]

change the muffler belt, that always quiets it down

Arent muffler belts expensive these days? It might just be easier to install an aftermarket flux capacitor.

[SmoothKnight]

Arent muffler belts expensive these days? It might just be easier to install an aftermarket flux capacitor.

they are hard to come by, you REALLY have to look for them.

[DarcSystems]

One time I put flame throwers on my tailpipes so I could shoot flames out of the ass end of my car. Once they were in, they shot flames, and I thought "woah, that's way too flamey. I was expecting FLAMES to shoot out!!"

So I took the flame throwers out.

That kinda reminds me of your situation.

[Jatt4Life]

I was thinking about getting a turbo..but then I would be just like a Supra...a dyno queen. And yes I know a turbo is efficient compared to a supercharger..doesnt take power to make power, but I am already spinning the wheels, with a turbo it will just be even worse. Oh and Kumacho..yes I thought about that..but then that wont help either because they will be scared away by the exhaust.


Wow another ignorant domestic owner. Look you can say what you want about the Supra, but your car ain't a fucking Ferrari either.

[ThaiTanium22]

Saleen S7's suck. I mean damn, they use twin turbos so the lag prevents it from putting power to the ground. Damn ricer crap...

[FuNkYFreSH]

Nice to know you think highly of us Ebaumers.

Super chargers...when they're working right they scream. Get a louder sound system.

[Danny Lee]

I think zigmabob loses 100 points by this thread.

Superchargers offer INSTANT power, turbochargers offer the MOST power.

By all rights, the behaviour of supercharging would be worse for wheelspin, if as you say you were already 'lighting up' tyres.

So your car is loud, and spins the wheels, and you dislike both. Nice. You can't help the noise much (any other person would be constantly creaming to such a noise; I refer to the previous video), but you can control wheelspin much easier in a supercharged 400bhp car, than a turbocharged 400bhp car - no surprise boost, just ease off the right foot a little bit. Keep in mind that the only thing full throttle does for you is turn the back wheels - it's up to you to control how hard you want them to spin, because unless you have TC it's not going to do it for you.

[turtleturtle]

I can't believe you are whining about how loud your Mustang is and then you want to race people for money, and you are going to hustle everyone. Nice.

Its kinda like wen I see a V6 Mustang with a Saleen kit or a V6 Mustang with V8 GT badges. It just pisses me off to no extent. Trying to be something your not is the lamest thing I have ever heard. Why not make your Stang look badass and sound badass so you get some "real" competition instead of trying to pass your supercharged mustang for a nonsupercharged and race more than just some Hondas. I just think you are very lame.

[Danny Lee]

I have to agree with that, you're not going to be a sleeper in a mustang to begin with.

At most people would say it's a bit quicker than expected, but there are still lots of supercharged mustangs out there.

Racing for money is for chumps, just be a good sportsman and take your wins and losses for free.

[turtleturtle]

I have to agree with that, you're not going to be a sleeper in a mustang to begin with.

At most people would say it's a bit quicker than expected, but there are still lots of supercharged mustangs out there.

Racing for money is for chumps, just be a good sportsman and take your wins and losses for free.

Yeah, pride over money. If you need money, get a better job.

[zigamabob]

Wow another ignorant domestic owner. Look you can say what you want about the Supra, but your car ain't a fucking Ferrari either.

Did I ever say I was a Ferrari? You must just hate domestics for some unknown reason while I have no problem with imports. Ask anyone who actually knows anything about cars and they know what I am talking about. It is very easy to get a supra to big numbers, but then you will see a 600hp supra running slowers times than me with a good driver. All you proved in your post is that you have no idea what you are talking about.

I can't believe you are whining about how loud your Mustang is and then you want to race people for money, and you are going to hustle everyone. Nice.

Its kinda like wen I see a V6 Mustang with a Saleen kit or a V6 Mustang with V8 GT badges. It just pisses me off to no extent. Trying to be something your not is the lamest thing I have ever heard. Why not make your Stang look badass and sound badass so you get some "real" competition instead of trying to pass your supercharged mustang for a nonsupercharged and race more than just some Hondas. I just think you are very lame.

Your comparison made no sense. Its not like I have cobra badges all over my car, now maybe if you said you saw a v8 with no GT badges it would make more sense.

Believe me I race a whole lot more than Hondas, and the ones I do are built or swapped motors. And think what you want, but I would rather not let people know that I have a supercharger thats all.

I think zigmabob loses 100 points by this thread.

Superchargers offer INSTANT power, turbochargers offer the MOST power.

By all rights, the behaviour of supercharging would be worse for wheelspin, if as you say you were already 'lighting up' tyres.

So your car is loud, and spins the wheels, and you dislike both. Nice. You can't help the noise much (any other person would be constantly creaming to such a noise; I refer to the previous video), but you can control wheelspin much easier in a supercharged 400bhp car, than a turbocharged 400bhp car - no surprise boost, just ease off the right foot a little bit. Keep in mind that the only thing full throttle does for you is turn the back wheels - it's up to you to control how hard you want them to spin, because unless you have TC it's not going to do it for you.



Shows how much you know about cars. All superchargers DONT offer instant power. Since mine is centrifugal belt driven it has to spool up just like a turbo. I have said before I have the best job I can get since im still going to school, I dont see a problem in racing for some side money. My supercharger reacts pretty much like a turbo, what I meant is that a turbo would give me a lot more power, but its not reaching the ground and is even louder so whats the point.

And wow good advice feather the throttle..noo really? Even feathering first once I hit second im still spinning which is fine because I need the boost to build up for third. I am not complaining about wheel spin.

[some_ugly_guy]

Streetracing is for chumps and immature.

[DarcSystems]

Unfortunately for you, you picked the loudest type of supercharger you can get, so there's really nothing you can do except to stop looking for easy kills. Be a man, race someone worthy of your setup.

[Spank666]

And wow good advice feather the throttle..noo really? Even feathering first once I hit second im still spinning

You must not be very good at feathering the throttle.

[Danny Lee]

Well you never mentioned what type of charger it was. Centrifugal belts appear to make up a tiny fraction of superchargers because I've never heard of them.

But now I know a bit more about them, and you're still wrong.

[EeekiE]

Shows how much you know about cars. All superchargers DONT offer instant power. Since mine is centrifugal belt driven it has to spool up just like a turbo. My supercharger reacts pretty much like a turbo, what I meant is that a turbo would give me a lot more power, but its not reaching the ground and is even louder so whats the point.


All superchargers do offer instant power. The amount of power they offer at any given time is directly related to engine RPM. The power they do add can be very low if you're low down in the rev-range and using a piss-poor excuse for a supercharger like a centrifugal design, which are wank at low engine speeds. Does your 'charger have a gearbox arrangement to step up power at low RPM?


And wow good advice feather the throttle..noo really? Even feathering first once I hit second im still spinning which is fine because I need the boost to build up for third. I am not complaining about wheel spin.


You're boost doesn't "build up", it's directly related to engine RPM.
If you applied a constant load to your vehicle in say 2nd so it wouldn't accellerate and would remain at a constant speed, then planted your foot, the boost wouldn't "build", it would hit a point within a fraction of a second and then stay there. It doesn't have an independant RPM like a turbocharger.

Supercharger CFM directly relates to engine RPM, not exhaust gas, you don't need to keep it spooled or wait for anything to build, you just need to drive it properly with consideration, and it can be hard, but you just need to learn. Think about me, I've got a charger that does offer massive low down chug, AND I'm in a FWD car.

[DarcSystems]

Well, technically a centrifugal doesn't give you anything at low RPM. They're aimed for high RPM operations, so he's kinda right. But no, they don't technically "spool" like a turbo.

[EeekiE]

Yeah it probably drives alot like a car with a wild cam that comes on tune very high up. But I know you can get centri's with gearboxes to step them up at lower RPM.

I'm not sure of how Mustangs are set up by default, but it sounds like it would benefit from a form of LSD and some better tyres more than anything else.

[DarcSystems]

Most centrifugal applications are for cars that have a decent amount of low end torque already. The s/c takes care of your top end power while your cam does the magic in the low end.

[zigamabob]

Unfortunately for you, you picked the loudest type of supercharger you can get, so there's really nothing you can do except to stop looking for easy kills. Be a man, race someone worthy of your setup.

It is not about racing, someone "Worthy" or not. It is trying to keep a sort of...ace up your sleeve. Someone could say that mustang is "hooked up" but have no idea whats in it, which is why I love all motor setups but anyone who knows about mustangs knows 4.6 2 valves are crap for NA. I have raced anything from stock honda civics to built turbo civics, from stock camaros to vettes. I race for fun of course, but I still dont see the problem in making a little extra side money.
You must not be very good at feathering the throttle.

Well..I guess..It is harder than it seems, I need a balance of not letting the tires spin, but staying on the pedal enough to keep the boost up high. It will be a lot easier when I finally get all the suspension work done...and good tires.

All superchargers do offer instant power. The amount of power they offer at any given time is directly related to engine RPM. The power they do add can be very low if you're low down in the rev-range and using a piss-poor excuse for a supercharger like a centrifugal design, which are wank at low engine speeds. Does your 'charger have a gearbox arrangement to step up power at low RPM?



You're boost doesn't "build up", it's directly related to engine RPM.
If you applied a constant load to your vehicle in say 2nd so it wouldn't accellerate and would remain at a constant speed, then planted your foot, the boost wouldn't "build", it would hit a point within a fraction of a second and then stay there. It doesn't have an independant RPM like a turbocharger.

Supercharger CFM directly relates to engine RPM, not exhaust gas, you don't need to keep it spooled or wait for anything to build, you just need to drive it properly with consideration, and it can be hard, but you just need to learn. Think about me, I've got a charger that does offer massive low down chug, AND I'm in a FWD car.

The supercharger isnt directly related to the RPM of the car. It is more of computer controlled...well atleast it seems like it. I can be at 5000 RPM but if I dont have my foot down on the gas hard I wont build any boost at all. I guess it has something to do with the tune that came with the kit. I still need to tune it to the exhuast which should give me a little bit more down low. And if your getting power instantly you must have a twin screw set up. If my foot is down hard on the gas I only start gaining boost at around 3000rpm and then top out at around 6000rpm. I am sure once I get a good tune in it the powerband will have less of a curve, because looking at my dyno right now it would probably look like I have a turbo in the thing. And you are right "Spool" probably wasnt the right word, but I am not getting instant boost like carboy said.

Also I looked into a Kenne bell which would be twin screw, instant power, but during a drag race it wouldnt make much of a difference. It actually helps I dont have instant power in first gear.

[Spank666]

The supercharger isnt directly related to the RPM of the car. It is more of computer controlled...well atleast it seems like it.

Is that a serious statement? The supercharger is driven off the crank, of course its fucking directly related to the RPM. When the RPM go up, the crank spins faster, thus the supercharger spins faster.

[dtorre]

whaat since when do they have boost controllers for superchargers?!:err:

Is that a serious question?

And I thought dtorre was the self proclaimed expert? :lol:

Thats because I am......now don't be that guy

.................

superchargers even though they are belt driven still work off of a psi system that can be boost controlled......

with controllers....just like turbos....

wow heres an example:

http://www.clubsi.com/whats_hot.shtml

[Danny Lee]

The supercharger isnt directly related to the RPM of the car. It is more of computer controlled...well atleast it seems like it. I can be at 5000 RPM but if I dont have my foot down on the gas hard I wont build any boost at all.

Being forced induction, you can still drive around off-boost if you're gentle for much less petrol consumption about town. To my understanding, throttle position is took into account by the ECU to tell when to apply the boost for full power. The first thing I knew about this was when passengering in EeekiE's G40 and hearing a hissing noise for 4 seconds straight at a time when at about 3000rpm, which was the noise of part-boost during the transition from off-boost to on-boost - I get most of my bits and pieces about FI and supercharging in particular by learning about and bystanding discussions about G40's. Superchargers are all crank driven and run in direct correlation to the rpm of the car no matter what. They are always spinning, always droning, but that's not to say they are constantly exerting pressure into your engine. At low openings the force generated just vents out into the atmosphere which means there is no boost, effectively making your car NA until the next time you push it.

The power is instant, but that's not to say it will punch you in the back from 1500rpm - like wild cams or large bore exhausts, they offer more the nearer you are to your powerband (at high RPM), which produces a distinct power curve sort of akin to a turbo but with less lag and better low-down pickup than a turbo despite this. So you can see how turbo and superchargers are similar and I see now why you thought what you did - the point of supercharging is to apply whatever boost it can, instantly, for much better throttle response than turbocharging - imagine pulling away from a slow hairpin at relatively low RPM in a supercharged Eaton 200bhp car, with a turbocharged Garrett 200bhp car on your tail - you would have much better get-up-an-go than the turbine counterpart which is bogging down behind you, which would count for a lot on slower circuits, hillclimbs etc - it's less effort and the torque is right there. If the Evo in the Evo vs. Lambo Top Gear set was 400bhp supercharged and not 400bhp turbocharged, it wouldn't have lost to that Fiat Estate :P

Oh, and sorry dtorre, you got me.

[EeekiE]

You may get a slight sensation of boost building, but that's because you have a pressure release valve that, on my car atleast, is a mechanical thing directly linked to the throttle butterfly. So yes you can drive at 7000rpm with no boost if you wanted, I just meant, the second you put your foot down, and if you were to put it on a brake dyno and hold it at one RPM, the boost would near instantly peak and stay at certain pressure that related directly to engine RPM.
Now sometimes this pressure release valve can be vaccuum operated, and probably could be computer operated on some applications, I'm not sure. Maybe there is a delay in this, or maybe the operation of this valve can be adjust to "bring the boost on" more gradually for more speed and traction.
A modern Roots/Eaton, a Twin Screw/Lysholm and VW G-Lader superchargers all offer very good low down chug.

[zigamabob]

Well yah eeekie and dannyboy you both pretty much fixed up what I was trying to say. A roots or twinscrew is usually the way to go, but my exhaust and a good tune should help flatten out the curve. And the kit did come with a surge valve..which I am guessing serves the same purpose as a BOV, which is pretty loud, but by the time someone hears that its over.