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Discussion Starter #1 (Edited by Moderator)
Had a pro sport back box fitted today, sounds good not loud so just right :thumbsup.

When I came home i got out to listen to the idle and noticed the exhaust sounds as if its popping rather than being burbling smoothly. Just wondering if this is the norm or if I better get the car diagnostic checked to see if the fitment has thrown anything out of sync etc.

The back box is as close to oem i could get with 2.5 slash pipes and made to be as quiet as possible so it gives a nice growl, its the idle noise I am not sure about as I wanted that as smooth as possible.

Before I go back to the fitters and ask them (who I must say are excellent) I wanted to get some pointers/advice please:)
 

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Discussion Starter #2
Could it be that fuel is burning = popping? or maybe a sensor has been disturbed when fitting the back box? Would diagnostics find these problems?
 
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