I have a 2002 grand prix se with 3.1l. I staright piped it and it doesnt sound bad untill i let off the throttle and the exhaust popes and it sound like a back fire almost. what causes this?
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I have a 2002 grand prix se with 3.1l. I staright piped it and it doesnt sound bad untill i let off the throttle and the exhaust popes and it sound like a back fire almost. what causes this?
A 3.1 straight piped causes it.
I'm gunna guess it's due to the fact that there isn't enough output in the engine to sustain the low back pressure of a straight pipe..
But i bet someone will correct me
Well its straight piped with no resonator or mufflers. So you are going to hear the "back fires" and popping sounds as you let off the gas.
Install a resonator and most of the sound will go away.
A backfire is caused by un-burnt fuel...and with nothing in its path restricting it...yeahhhh.
Resonator will help it but might not fix it all.
You guys are dumb.
Another thing to note.
3100 = 60*
3800 = 90*
We got bent.
60* exhaust note is way better.
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