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.
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