Well guys,

By now, you've probably seen me post in this section of the forum with issues with my tune.. One thing I am beginning to experience is between 3,600-4,000 RPMs - my car sometimes cuts out (almost like fuel cut) real quickly. It doesn't do it all of the time (noticeably), and I notice it most of the time under part throttle boost.

I've tried new spark plugs, plug wires, coils, gapping my plugs differently, and playing with my tune.. I don't see anything that clearly shows on my logs either. No odd timing or fuel issues.

I'm thinking whatever is causing this may be causing a lot of my random knock issues. Any ideas?

 

Log only ipw and rpm and see if that shows it. Just those two items.

Or only ipw

 

Great idea. Thanks. I will give that a try later.

 

Here are a couple of logs with ipw and rpm. One of them also has tps.

 

Could be a blown off vacuum line. Perform a boost leak test yet?

 

Not yet... Would this still happen on SD, no MAF?

Here are some more logs. I have a 3rd gear pull, a 1st-2nd driving slightly hard, and a cruise from street onto the highway where I end up mostly in 5th gear.

The big log with highway driving, I highlighted the log yellow where the car cut out on me in 5th gear! It's at the very end of the log.

 

I have played with my knock tables a little bit at this point because it seems the car is picking up knock way too easily, no matter how little or how much timing...

I'm thinking some of the knock is phantom due to my Exedy triple disk.

Here is where my tune is at now.

 

I had the same problem...got worse as time went on..turned out to be a bad Omni 4bar. I was fighting it for months! Are you running SD?

 

Yea he's on sd