gap is too wide for a FI car, imo.

if the new plugs don't work, it's your tuning.

if the tuning isn't wrong, it's your coils. sometimes taking it out and re-clicking it might kill the problem, but .032 is big for anything boosting over 4psi.

 

My guess....find a better tuner (solves just about every turbo problem out there).

 

I am hesistant to point the finger at the tuner, he is very well respected and has a buttload of experience. If it weren't so intermittent then I would be going that direction. I'll go check out the AFR when this happens and close the gap up a bit.......

"stay tuned" no pun intended

 

absolute is 14.7 + boost at sea level


So your probably around 14+9.5 or 13.5+9.5 ABSOLUTE



or.... I didn't sleep enough

-Greg

 

ok so here is the scoop

I drove it for about 40 miles pretty hard then parked it for 20.

AIT was at 160ish when I started it and it immediately started misfiring. The AFR went up into the 16's and 17's while it was doing this. I also pulled the plugs and regapped them to .028.

 

If it drives fine and then starts crapping out, I have a hard time believing its the spark plugs.


Does it always happen at idle or just at idle after driving a while and waiting a little bit?

 

I thought I would give it a try. It can happen any time when the AIT's go up such as being put away wet after being driven hard then starting it back up a bit later.

In the example above, it starts like normal but revving it up or putting any load on the engine will cause it to dork up. If I let it cool down completely it will be good again until the above happens again.

 

Doesn't sound like a spark plug problem at all seems (obviously) more dependent on engine temperature which again leads me to the tune.

I'd say have him check out the maps again, give him a ride to show him whats happening so he can tune it out.

 

I called and left him a message, thanks for all the help and I'll update the thread when I find out what's going on.

 

Bump


First post updated