High exhaust note, HELP ME, I SOUND LIKE A CIVIC!!!
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High exhaust note, HELP ME, I SOUND LIKE A CIVIC!!!
Hy guys i got a full exhaust manifold back custom y pipe 2 1\2 mandrel bent etc. AND IT SOUNDS LIKE A CIVIC, its got a real high pitch four cylinder sound topped off with a whistling background if u know what i mean, at idle it sounds great but high revs its horrid, can anyone tell me what i need to do to reduce the noise and deepen it cronicly but without reducing the flow
Thanx heaps
Brenton
Thanx heaps
Brenton
Pusssseeeehhhh
Joined: Dec 2000
Posts: 2,001
Re: High exhaust note, HELP ME, I SOUND LIKE A CIVIC!!!
Originally posted by Aus_Maxima
Hy guys i got a full exhaust manifold back custom y pipe 2 1\2 mandrel bent etc. AND IT SOUNDS LIKE A CIVIC, its got a real high pitch four cylinder sound topped off with a whistling background if u know what i mean, at idle it sounds great but high revs its horrid, can anyone tell me what i need to do to reduce the noise and deepen it cronicly but without reducing the flow
Thanx heaps
Brenton
Hy guys i got a full exhaust manifold back custom y pipe 2 1\2 mandrel bent etc. AND IT SOUNDS LIKE A CIVIC, its got a real high pitch four cylinder sound topped off with a whistling background if u know what i mean, at idle it sounds great but high revs its horrid, can anyone tell me what i need to do to reduce the noise and deepen it cronicly but without reducing the flow
Thanx heaps
Brenton
That whistling sounds like a exhaust leak somewhere....
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Joined: Nov 2000
Posts: 359
- Congratulations, your exhaust now sound exactly like it should. You've got approximately 70hp/L with your almost-full exhaust (as measured from the flywheel). A Civic has about 75hp/L with a full from-the-head-back exhaust. Your car sounds exactly like it should for that state of tune.
- Yes, a lot of your sound is determined by: displacement, number of cylinders, head design, etc. But I've found that cars with similar states of tune all sound roughly the same. You can either add in a resonator of some sort to isolate the noises you like or change the port design of your head/manifold. There's not much else you can do - the better tuned your car becomes, the more it will sound like a well-tuned car (ie, Hondas).
- And I agree... your whistling is most likely an exhaust leak. Check all of the attachment points (any place that requires a gasket). If you can't find anything there, check your O2 sensor locations. If that still doesn't work, check your pipes with a fine-tooth comb. If that still doesn't work, get header-wrap.
- Yes, a lot of your sound is determined by: displacement, number of cylinders, head design, etc. But I've found that cars with similar states of tune all sound roughly the same. You can either add in a resonator of some sort to isolate the noises you like or change the port design of your head/manifold. There's not much else you can do - the better tuned your car becomes, the more it will sound like a well-tuned car (ie, Hondas).
- And I agree... your whistling is most likely an exhaust leak. Check all of the attachment points (any place that requires a gasket). If you can't find anything there, check your O2 sensor locations. If that still doesn't work, check your pipes with a fine-tooth comb. If that still doesn't work, get header-wrap.
Senior Member
Joined: Sep 2000
Posts: 1,452
I was under the impression firing order had a lot to do with it. If you're concerned about the noise at high RPM's, get an intake. It'll drown out the exhaust note and when you stomp on it, and it sounds pretty mean too. I'm having the exact opposite problem, I think my exhaust sounds ricey at 1400-3000rpm 
Originally posted by SleeperSE
- Congratulations, your exhaust now sound exactly like it should. You've got approximately 70hp/L with your almost-full exhaust (as measured from the flywheel). A Civic has about 75hp/L with a full from-the-head-back exhaust. Your car sounds exactly like it should for that state of tune.
- Yes, a lot of your sound is determined by: displacement, number of cylinders, head design, etc. But I've found that cars with similar states of tune all sound roughly the same. You can either add in a resonator of some sort to isolate the noises you like or change the port design of your head/manifold. There's not much else you can do - the better tuned your car becomes, the more it will sound like a well-tuned car (ie, Hondas).
- Congratulations, your exhaust now sound exactly like it should. You've got approximately 70hp/L with your almost-full exhaust (as measured from the flywheel). A Civic has about 75hp/L with a full from-the-head-back exhaust. Your car sounds exactly like it should for that state of tune.
- Yes, a lot of your sound is determined by: displacement, number of cylinders, head design, etc. But I've found that cars with similar states of tune all sound roughly the same. You can either add in a resonator of some sort to isolate the noises you like or change the port design of your head/manifold. There's not much else you can do - the better tuned your car becomes, the more it will sound like a well-tuned car (ie, Hondas).
The first part of your statement I agree with... natural exhaust note has much to do with displacement etc...
But the part about any well tuned car sounding like a Honda or sounding like other well tuned cars?
With your statement... you are saying that a well tuned 5.7L V8 at 427HP will sound like a Honda.
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