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Discussion Starter · #1 ·
hey guys. i have the 11226 magnaflow muffler installed on my 4.8 When i floor it and let off it pops really loud. is this normal? Its a 2.5 si/so
Also got an intake last night..Whooo what a difference. got it from pepboys for $120
 

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an exhaust leak will cause that...u may not hear it but that can cause popping under decel...check all the welds just to be sure...
 

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my truck used to do that with my Hooker Aerochamber, but i assumed it was because i had no catalytic converters. :shrug:
 

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give it a week or two and see if it still does it. when you first put a muffler on sometimes they do that. when i put my magnaflow on my suburban it did that for the first couple days.
 

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Discussion Starter · #7 ·
guess ill check for leaks . . i dont drive it everyday and ive had it for 2 or 3 weeks. all stock just muffler and intake
 
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