Bloodpython171 
Will you lose too much back pressure causing your car to lose HP?Will this cause any error codes?What size pipe is needed to replace the muffler on a stock GXP?Any other tips or helpful advice would be appreciated.
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08-23-2015
Will you lose too much back pressure causing your car to lose HP?Will this cause any error codes?What size pipe is needed to replace the muffler on a stock GXP?Any other tips or helpful advice would be appreciated.
08-23-2015
Best advice ever.....DON'T.
Even with your v8. Just don't.
08-23-2015
You already have a thread on this, this one is now closed.
Back pressure is a myth really, you arent turbo charged or supercharged and pushing 500+ horsepower so exhaust size does not play a roll in anything.
No error codes like we already told you.
Pipe size is like 2-2.25in.
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