Quote:
Originally Posted by Cmanns05
Okay your STFT are horrible, the banks are basically doing the exact opposite of each other. Looks to start as soon as you go into boost.
No codes during a pull like this? Check for obvious vacuum leaks, could also be a faulty o2.
DO NOT do pulls any further. Youre leaning out cylinders and these engines will let go. Trust I just replaced mine for a bad o2 while logging for my tuner.
INPA or ISTA has tools tou can download to check o2s for free. Smoke machines on Amazon are very affordable. Time to roll up the sleeves and start checking.
Would be smart to pull your plugs see if the injectors for 4,5,6 are leaking. Or are clogged.
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errr.... are we looking at the same log here?
I don't see his car leaning out at all, and STFTs don't really look bad at all... I would say they are bad if they were like in the 20s or 30s... something like that.
The only thing that I see in this log is the timing corrections on multiple cylinders. This could be because of the colder spark plugs... I personally don't recommend people go to colder plugs unless they have upgraded twins, or single turbo. For anything stockies can produce the OE plug I found has the best results. None of that would explain the surging though.
I agree with Wyzee... a full uninstall of MHD is probably in order to get the software reset back to baseline.