gnpp catback vs stock muffler
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gnpp catback vs stock muffler
Hi, i have a 07 ss sc and since several month i have a gmpp catback waiting in my garage..
The main concern : i want hp but want to keep stock or almost stock sound
has anyone ever tried or have some information about putting my stock muffler on the gmpp catback ?
Will i still gain hp ? Will the sound will be nice ?
Thanks alot for your time if you have any information that would be great
The main concern : i want hp but want to keep stock or almost stock sound
has anyone ever tried or have some information about putting my stock muffler on the gmpp catback ?
Will i still gain hp ? Will the sound will be nice ?
Thanks alot for your time if you have any information that would be great
#4
a) it will give you ~9 horsepower without tuning for it, maybe a bit more if you do tune
b) it wont be MUCH louder than stock but WILL sound very very nice. def. best system to get soundwise
c) go on youtube and look up gmpp system for cobalt not too hard
b) it wont be MUCH louder than stock but WILL sound very very nice. def. best system to get soundwise
c) go on youtube and look up gmpp system for cobalt not too hard
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Its the performance one , i watched about 50 video and yes its too loud for my taste i want performance without changing the sound .i dont mind a little change but nothing like the whole catback sound...
I found one video.on youtube of a redline with a catback and stock exhaust and it sound awesome ..not much louder than stock
my main concern is more performance wise is there any difference in the muffler only between stock and gmpp like flow ??
I know the gmpp should flow better ..but will you really feel it ?
I found one video.on youtube of a redline with a catback and stock exhaust and it sound awesome ..not much louder than stock
my main concern is more performance wise is there any difference in the muffler only between stock and gmpp like flow ??
I know the gmpp should flow better ..but will you really feel it ?
#14
oh and idt anyone answered this... its really hard to tell a ~5-10 horsepower difference man. bit by bit as you add mods like intakes, headers, dp's, exhausts, blah blah it'll creep up with the power but it would be hard to tell unless u put a bunch of stuff on at once
only noticeable gain i've done so far was stage 2. that difference was night and day!
only noticeable gain i've done so far was stage 2. that difference was night and day!
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