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that log looks like it's from Pcmtec?

Spark table

Its just a bad combination of parts. Need a datalog of the part throttle shifting issue. But get a tape measure and see how tall your tires are...

Those are very impressive HP/TQ numbers from the 1strun log for a stock engine.

I appreciate it. I guess will have to swap cams out then. I had no idea the truck cams were so weak at low rpms which sucks because I have another...

You still have too much airflow into the engine. Add IAC Position and MAF Hertz to the channels. No point in doing anything until you get the...

yes im resetting the fuel trims every time im allowing time for fuel trims to even out after reflash i do a dummy log till they mellow out then i...

No. But the tuner can send you tune files for you to upload.

Thanks RDF1. I found a leak after your response. I had a vacuum line cap on the blower that had a tear in it. I also connected the boost bypass...

Here is LMG injector data.

Fresh copies of the tune and log.

Also its running in SD Mode and VE table numbers are crazy high so id check fuel pressure before going any further.

They are 12594512, which are listed as 38# for a 5.3 w/ flex fuel. Will do.

Look at ECM2130 and ECM 2131. The reason the timing is staying static is because Throttle Cracker is in play. As soon as you hit 2mph (ECM...

It appears you have a vacuum leak or the throttle body is open to far or the blower bypass isnt adjusted corretly. I see your still using the...

Add cylinder airmass to your channels.

Whats your injector part number?

Some of the GM pedal throttle voltages go in the same direction some go in different directions. Depends on which ECM you are using. This is why it’s...

I had P2138 on my setup when I first put it together, too. But it was my own wiring, not PSI. Add channels for pedal position D & E in your log,...

Looks like PE is enabling as per the tune. Every time I see PE come on is when the pedal position is above 39% (as per the Throttle > Enable Pedal...

Updated tune with corrected injector data, and a quick around the block log. It is definitely better. I'm reluctant to fiddle with the VVE table...

Just checked my Injector data - it got changed somewhere along the line. Updating... Haven't tried VVE tuning. Call me chicken. Ha.

I'd get the part number off of the injectors and make sure you have the correct data in the tune for the injectors you have. Have you done any VVE...

Got the harness, ecm and tcm from pmcofnc. The truck starts up and will drive, but shifting isn?t right. I have 2 obvious issues that aren?t helping...

Digging up an old thread here, but I'm having the same jerking/surging issue on my 2016 Silverado 2500, and trying to make some adjustments. For a...

Just a quick "In other news" update, here. I'm struggling with the tune, but have made other decent progress. I have the speedo working again...