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Backfire????

2K views 4 replies 3 participants last post by  Yankee5.0 
#1 ·
So all I have on my stang is the flowmaster outlaw since then is been backfirering idk y
Do I have to change the xpype or something to improve the airflow ???
 
#2 ·
Are you talking about the exhaust kind of popping after revving it up? Because that's normal when upgrading from the oem mufflers. Some exhausts just does it more than others.

Sent from the future.
 
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