exhaust question

[00ls-sport]

did these cars have any sort of tone when new. mine has 72k on it right now, and i cannot here anything. tomorrow, though, the whole system(everything after manifolds) replaced for free under warranty. was hopig it would have a little grunt. if not, at least it should run a little better and mpg may go up.

 

[Quik LS]

both the intake and exhaust were tuned to have little noise.

switching to an unrestricted intake and flowing exhaust makes all the difference.

 

[skicrash911]

Did see any gain in mpg with the exhuast and intake?

 

[Quik LS]

intake was 13rwhp
exhaust was 11 rwhp

everytime I add hp I loose mpg.....

but yes you should see an increase if you can keep your foot out of it.

 

[skicrash911]

haha I know what you mean its hard not to have fun in this car. But with gas at 2.35 I have to find something to help out

 

[lsondubz]

I was thinking about having a custom system made...I am taking it in to an exhaust shop next week because I have a leak in the front somewhere that is bothering the hell outta me...Do you think if I had them just cut the resonators out that would do anything?

 

[Quik LS]

not much. I have a custom system as well.

IMHO the gains are:
- freer flowing mufflers
- larger piping with less bends (and removing the resonators)
- x-pipe

 

[LS Gets U Wet]

the stock exhaust is made to flow a lot however, changing the whole thing is almost a waste of time....a lot of money for little gains
i put 2 flowmaster two chambers on a few weeks ago, and that made a huuuge difference, along with the kkm intake it screams when you get in it.

 

[Quik LS]

the stock exhaust is made to flow a lot however, changing the whole thing is almost a waste of time....a lot of money for little gains
i put 2 flowmaster two chambers on a few weeks ago, and that made a huuuge difference, along with the kkm intake it screams when you get in it.

This is true for 03+ LSes as the exhaust was re-tuned in 03. changing out the mufflers with give you the sound you want but not much hp gain.

The pre-03 LSes will gain more.