Exhause leak = Poor Performance

[lockw33d]

Exhaust leak = Poor Performance HELP!!!

ok just installed my magnaflow catback and i knwo ive got a leak i can hear it, my question is is this the reason y im gettin ****TY gas mileage??

 

[KronicRacer]

did you rest the computer?

 

[deftsound]

how does an exhaust leak sound? When i accelrate i notice what sounds like a hissing or sucking sound like someone goin shhhhh, i cant tell if its just the way the xhaust sounds or if i have a leak...

 

[BigChiefSmokem]

ive wondered this too...

 

[lockw33d]

well when i start my car up next to another car i can hear it coming from under the car, it sounds like you have dumps on your mufflers kinda, sounds liek you exhaust but only coming from under the car. I did reset my computer but im getting liek 14 MPG

 

[mikes2008gt]

That's weird. I didn't lose any mileage when I put mine on. Re-tighten/re-fit all the joints and see if you can stop the leak, then see if your mileage goes back up.

 

[Orions98GT]

hmm I don't think a small exhaust leak would cause a loss that large, maybe just a heavy foot with the new sound eh?

 

[stangGT97]

when i had a leak off the manifold it sounded like a clicking or ticking sound that only presented itself when the car was in gear

 

[GNN60GT500]

An exhaust leak will be evident by a ticking sound which also happens to be very annoying..lol

 

[eleanor'03]

An exhaust leak will be evident by a ticking sound which also happens to be very annoying..lol

i installed my slp loudmouth and mac prochamber at the same time..checked for leaks and fixed them..then i heard this ticking sound. I thought it was a leak and i got so fed up w/ it i took it to a shop. But they couldnt find nething...tightened me up, but i could still here the sound. After a few hundred more miles it went away. Take it too a shop, the most they can charge you is like $25. As far as gas mileage goes, a leak wont do that, but a new exhaust does make u accelerate harder = - gas mileage