Still popping thru exhaust

[a.graham52]

iv never had issues distinguishing history missfires. if you ahve a cylinder with 11xxx missfires and one with 5xxx misses... go for the higher number. theres a logical reason why it does that but i cant remeber what iwas told.

[xXManwhoreXx]

Fixed yet? Its definately not the exhaust.... Thats a terrible idea. My guess is either ignition or something fuel wise. no cel's at all?

[Redog]

No SES, it's tuning issues. I figured it out to that point.

[xXManwhoreXx]

To much fuel or ignition to advanced?

[[ion] C2]

The question is, when exactly did this begin? What changed on your car before this started happening?

Get it to ASS and I'll check it out. Well I'm sure everyone will but I'd like to look at it for sure.

[Redog]

It's been having these issues since July, but it was very random, it's just getting more often.

July I had a head gasket issue and it was fixed with new heads that I bought off Fuller

[[ion] C2]

you have hptuners, load up a datalog for me so we can see what's up

[Redog]

At work, don't have my laptop.

I'll run a fresh one tomorrow and send it to you

[Redog]

Well I got on it today and paid close attention to the WB and when it was popping it shot right to 17.2 and up to that it was hanging out about 13.9 to 15.4 which is high for WOT

Caught all this on a HPTuners scan

[AleroB888]

Originally Posted by Redog

Well I got on it today and paid close attention to the WB and when it was popping it shot right to 17.2 and up to that it was hanging out about 13.9 to 15.4 which is high for WOT

Caught all this on a HPTuners scan

I have not read this whole thread, but can you watch the fuel pressure reading at the exact time this happens?

[[ion] C2]

Mine used to get lean spikes and it was due to the TPS. Hopefully whatever it is is obvious in the log.


You already disconnected electrically the upstream O2 sensors right? No change?

[Redog]

No I didn't do that