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I'm used to HPT never resetting it on a cal flash. Just like how HPT on purpose does not reset other learned values on a cal flash, such as LTFT,...

Cringer! thank you this works! for some reason still cant get a p0103 to set but the maf was def lurking in the back round. ve was way different got...

looks like i set all the ETC tables under Tip In to 6042. I may have done this accidentally instead of updating the torque limit tables to the max...

working on getting a log

Sorry.. Please find attached relevant tunes and Files. Files on the 16th show issue files on the 17th do not. Log has Mark line in it shortly...

very very audible knock

No it never was able to read the ECU. The ?write? button on the laptop was greyed out.

Consensus on here is GM only for knock sensors. And most other sensors. But especially the ones that are hard to get to.

Use this to fail that MAF

i can not get a p0103 to set high maf table somehow got lost converting to sd os added just incase still a lookup but no change but yes...

you have lots of data there for us. Is the engine stock? no cam? what number is on the injectors? what maf is on it? what map? If it is a...

Your mm3 you just need to select the return to stock option in the ECM menu, it’ll return it to stock. It has factory calibrations stored in it for...

The only way to check the fuel pump is with a fuel pressure gauge tested at max load. That PE isn't safe. It's far too rich.. but like I said...

Thanks Alvin, I had a suspicion that Fuel Pressure would be one of my diagnostic steps here, I need to drop the tank anyways to fix the vent...

Try the attached to see what it does. I made some small tweaks to the VT table and the Idle predictive. The idea is to get your Zero Pedal Torque...

The tune is honestly a mess. You are commanding like a 7 : 1 AFR at WOT in PE likely to compensate for the MAF only reading around 120g/s at WOT....

I wouldn't change the knock sensor settings. If you concerned the knock sensors aren't working.. run the timing up just to see knock as a test. ...

you risk less performance

See if this doesn't fix it.

yea i didn't even look to see if he had failed the maf. saw the air calc mode in the Log and assumed he was running MAF being that is was showing...

I just addressed that while you were posting this.

It's cutting airflow. Not sure if you're logging the right throttle blade pid but what you are logging looks like it's staying open. First thing...

not completely, when it switches to high speed air flow calc at 4k rpm is when the problem happens. i think he missed moving that up.

It's in speed density.

read the file well and now it's ok! thanks hptuner 5.1.4660 RR3A-14C204-AND

definitely tune related. Finish populating the Mass air flow calibration and issue will be gone

fail fixed