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Popping sound on decel

Old 04-21-2006, 02:18 PM
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collectiv
Popping sound on decel

Hey ppl,

I recently installed a set of devil high mounts but now I getting alot of popping sound coming from them during decel. I have read through many posts and they indicate that its the PAIR valve causing it.

I have a fairly good understanding of how it works now, but my question is how come it only happens during decel when the engine is around 4k rpm and under? I know the PAIR valve opens when the vacuum is @ its greatest (on decel), how come it doesn't make the popping sound when im doing about 80+ KM/h, above 4k rpm and then close the throttle?

Thanks,

Eddie
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Old 04-21-2006, 05:14 PM
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probably not a good seal where the mid pipes clamp to the headers. I had to trim my Two Brothers right side mid pipe about 1/2" back and re-slot it so the clamp would squeeze the gasket and make a good seal. I also used new gaskets at the header and left the old gaskets in my stock mufflers.
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Old 04-21-2006, 07:37 PM
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Perhaps your jetting is off.
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Old 04-21-2006, 08:24 PM
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Re: Popping sound on decel

Originally Posted by Loco";p=&quot View Post
Perhaps your jetting is off.
See that is what I was thinking....lol....well maybe not...mine still does it, and I want it to stop....it is annoying..... especially while getting passed on the track by suburbans.....lol
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