mark989262

ANOTHER EXHAUST QUESTION, installed American Racing Headers with O/R Xpipe,with stock mufflers on a 2010 shelby gt 500 , way to loud how do i tone it down

Mark,

Please let me know the outcome to this thread:

http://www.svtperformance.com/forums/vmp-tuning-378/810281-engine-light-flashes.html

Regards,
Moncho

keep getting a random misfire code on my 2010shelby with an aftermarket tune from vmp tuning any thoughts about what it could be.

do you need to tune when installing a 10% lower pulley on a 2010 shelby