Mystery Pop

[Alpha D]

Goodhart never over look the obvious boost leak EPIC FAIL side mount had a big hole in it. System held 15psi with the compressor producing 80PSI funny. The noise was hard to hear while driving due to wind etc. (If curious how i couldn't hear such a big leak)

Halon thank you for that suggestion. I checked the wire and the terminal was attached so i moved on to check other things. Yet when carpsycho took a look. He said yeah youre idle wire isnt there. I was confused and took another look the terminal was still there with no wire attached. (Silly mistake)

We reattached the wire and the idle sits at about 1000rpm now instead of the nice 850 or horrible 500. Boost leak must be to blame for the popping noise. Sticked a bolt in the side mount to temporarily seal the leak till i arrived at home. Surprisingly it helped. The Pops have decreased but if they do pop its really loud now. Just finished installing a new side mount, but the battery is dead so im waiting to jump and test drive it. Since the back fire is still there.

[Halon]

Nice, good to hear you found some possible causes. If you have a logger though, I'd still log to make sure that the idle switch is working. I've seen plenty of idle sensors that have the wire hooked up, but still for whatever reason the ECU doesn't get the signal. So I'd still check that if you your logger can do that. Or just let the car idle and detach that wire and see if rpm's change based on whether or not that wire is hooked up.

Cliff note = wire hooked up to idle switch does not mean idle switch signal is good :)

[Alpha D]

Thank you very much! Ill make sure to log it tomorrow and check, as well as perform the wire test.

[goodhart]

Glad to see you got it figured out.

[Alpha D]

Seriously! I found some other stuff that needs attention, one problem at a time. Just got the car started pulls nice with the better conditioned side mount. Thought i was driving a new car. :D

Thanks again guys.

[CarPsyco84]

This popping is after you let off the gas at like higher than 3500rpm... It has a shorty pipe, but my car has a shorty pipe too and doesn't do this. I think it might be the idle switch not working so its still injecting fuel but its not burning in the engine cause its at full vacuum...