Exhaust popping under boost
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
Exhaust popping under boost Sometimes under boost, I hear a rapid pop pop pop out the exhaust.
The data logs don't show anything that jumps out, like lean spikes or something.
Good plugs, valve springs, LS3 coils, etc, so not sure where to start on it.
Anyone had this happen.
The data logs don't show anything that jumps out, like lean spikes or something.
Good plugs, valve springs, LS3 coils, etc, so not sure where to start on it.
Anyone had this happen.
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
Gap is .026, did it on NGK 6's, I switched to 7's just for a little safety, same thing.
Plug wires are new, ohm'ed them out, all close. I was leaning toward ign, everything
is new, even the coils are LS3 takeoffs. Holley HP ECU. I have some truck coils I
could try just to try something. Otherwise the car runs great. I might reroute some of the wiring
that goes to the coils.
Plug wires are new, ohm'ed them out, all close. I was leaning toward ign, everything
is new, even the coils are LS3 takeoffs. Holley HP ECU. I have some truck coils I
could try just to try something. Otherwise the car runs great. I might reroute some of the wiring
that goes to the coils.
