EFIDynoTuning Forum

So I recently put a P1X procharger into my 07 Mustang GT and I'm having some idle issues. From a cold start it will idle fine, had it even idle for around half an hour but as soon as you drive it at all or shut it off it stalls out every single time you let off the gas. I have been searching around and couldnt find anything so I ended up posting in a forum about it and that led me here.

I'm just wondering if you could do a review of my tune to see if you can find any issues. Really the only thing that makes sense to me as to what can be wrong is Procharger sent me a bad tune, granted they swear up and down that there is no issue with it.

And I just realized it doesn't let me attach .scm files which is what my log is saved as why you gotta be difficult snap-on.....
Well I guess here is a dropbox link to the log hopefully that is fine.
https://www.dropbox.com/s/r5omnrt10867i ... 1.SCM?dl=0
Also FYI I use "ShopStream Connect" from snap-on to view the logs.

If anyone could look this over and give me some advice I would greatly appreciate it,
-Jason

what are u using to tune it?

post the tune file

what all is done to the car? injectors maf tb exhaust cam heads etc...

I used a Diablosport intune i3 for the tune, I sent a copy of my base tune to procharger and they sent me a new tune back.

• P1X Procharger

• Stage 3 intercooler

• Shorty exhaust headers

• 39lb injectors from 19lb stock

• 1 heat range cooler plugs gapped to .030"

• MAF sensor

• o2 Sensors

And once again it doesn't let me attach the file so I will just put it in a dropbox again.
tune - https://www.dropbox.com/s/dutajplj2wv1o ... r.frg?dl=0

-Jason

If its stalling when you come off the throttle then most likely the bypass is backflowing the maf causing it to stall.

I couldn't download snap ons logger since I don't have an account.
I don't have diablos software either to look at your tune file.
Very unlikely anyone else here will either.

If you have the procharger can tune it should run fine though. You definitely have something mechanically wrong.

OK I will have to look it over really well again and see if I can find the issue then.