Popping when shifting

[Sick96Stang]

When I am pushing the car hard and I shift quickly sometimes it will make a loud popping noise is this backfire in the intake? If it is backfire in the intake how do I fix it? If not what is causing this sound and how do I fix it?

 

[merc123]

Could be detonation. What fuel are you using?

 

[Sick96Stang]

87 Octane, it could be detonation but I dont know what would be causing it I'm not running any serious mods that should require me to up the octane?

 

[merc123]

Are you pulling any codes? It could be a misfire.

 

[Sick96Stang]

yea my check engine light is on because of my O/R H-pipe, I have the MIL's but it still gives me the check engine light.

 

[S10V8]

Could be raw fuel exploding in the exhaust, I know a guy with a supercharged 306 that when he lets off the gas it pops .

 

[merc123]

Did it always have a CEL even after the MILS?

 

[jrc_03_gt]

I have a friend that has a 94 cobra and we put a bbk fenderwell mounted cold air intake and his did the same thing. It only did it after we installed the cold air intake.

 

[merc123]

So you're saying that it could be his desenger?

 

[jrc_03_gt]

I can just tell you what happened to me and my friend. Did you have the problem before the densecharger?

 

[Sick96Stang]

Yea it was happening before the densecharger but it seems like it got worse after I installed the densecharger like it started doing it more. The check engine light has been weird. At first when I put on the O/R H-pipe and the MIL's it wasent on then 2 weeks later it came back on, and it was reading that it was an o2 sensor so I replaced that o2 sensor and then the CEL stayed off for anohter 2 weeks or so then came back on.