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Ive tuned a few with Holley ECU and its much easier getting them to run good. The last LS1 PCM i did with a LSA blower took me a really long time...

2613269 is not a GM operating system, and is also not a HP Tuners custom OS.

It will probably be cheaper to just buy a used T42 that the seller SPS-programs to whatever VIN you supply. All T42s are the same, all service...

Try logging all of the spark advance and retard PID's and see if it shows where the timing adjustment is coming from.

Thank you. For posterity's sake, here is the postWhat I do is go for a drive, set cruise at a speed, higher is better but whatever is safe to set to...

The injector data can be set up for whatever the fuel system type & pressure is... but you'd need to make a decision on what it's going to be and...

I'm sure that you'll make progress once you sort out the fuel system, which means understanding how each type works. Unfortunately your line of...

Hi aaronc7, i have changed the values to standard except for ignition and the limiting values, but the problem is still the same. can you think of...

Your other option would be to buy alphaOBD and use that if HP Tuners isn’t doing it.

There’s a thread somewhere in the dodge section where I explain exactly how to do the speedo correction

What octane fuel?

I will fix that fuel then. Another question. I found a stock 08 Impala tune in the repository. If I purchase the credits and do a full write on...

Ok thank you both for the feedback. Iac and RAF will be revisited but The fuel trims off are also apparent on part throttle conditions So that would...

Then it needs the stock injector data, the kind where it increases as it goes farther to the right. One solid number for the whole table is for...

Below 450mV is leaner than stoich, higher than 450 is rich. Fuel trims aren't active until it goes to closed loop which is usually around 130*F.

My thoughts are, wideband shows rich, idle and off idle, engine is cammed so it is likely even more rich than the wideband is reading, with the cam,...

I got a base tune from A&A when I did mine. Have you asked them for a base tune? Just a thought.... Pjs

Color can be set to whatever you want it to be. Don't rely on color to tell you good or bad. Learn to read the actual data.

Scanner wasn't showing any STFT's or KR. It did show O2's in the red at 400's mv. I understand red is bad.

No

Thanks. Wrong terminology, me? Probably. I'm not proud. Just trying to describe anything I feel is not right. I had a 160 thermostat in the...

Sorry, missed answering that. No there is not vacuum to the fuel regulator.

Thanks.

Did you ever find a trailhead? Do you know about AFR, Lambda, and calibrating your mass air flow sensor? That's usually tuner 101, if you haven't...

Its not in the fueling. Like I said in the first post it pulls 25+ degrees of timing for a split second when it falls on its face and then ramps it...

It's not a 'return style fuel system', as far as the injector data goes, if the reference hose is removed. 'Return style' is shorthand for...

You may have more than one problem. Yes, vacuum will pull the regulator down. Gasoline boils at around 100 degrees. IAC and RAF may not be right....