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Check your boot order. That is, connect the HPT MPVI to the OBDII port and the USB cable to it and to the computer. Reboot the computer, then start HP Tuners.

I have a clean install of Windows 8 after the motherboard in my old Win-7 computer went bad. At first the MPVI-Pro Scanner was not recognized, and then the drivers gave a CODE 41 error. Now things...

Yes, I will need to relook some of the settings. On the way to work today the truck coughed and sputtered in 83-degree weather.

Thank you "loppad." . . . and with good clear instructions.
Previously I tried the PE Enable TPS in the Power Enrich section, but it did little good.

Thank you umrjmac. Every little bit helps. The thread you posted has ten pages of reading for me.

. . . and I thought this was the correct forum for GEN IV.
Attached are three images of the air flow screens. Where do you suggest starting first? There are lots of options.

What did you do? Did you get the supercharger? If so, what kind?
My 5.3 is a dog even after a camshaft.

What is the best way to adjust LTFT?

I have gone into the MAF Calibration and adjusted the High and Low frequency tables for months to no avail. I always end up too lean.

The 2007 Avalanche...

Well, I went to the "Cranking Fuel" table under Fuel Control > General and added 10% more fuel across the table from 68*F and cooler and then applied smoothing to the table.

Since most of my...

I have a 2007 Avalanche 5.3 4x4 with a little camshaft and cold starting problems. It happens with both 87 octane and E85. I use E85 almost exclusively.

I suspect it is too lean initially. Any...

I was afraid someone would ask for that. My PC was not connected during the pulls. In the future I'll be changing out my throttle body and MAF. When it gets dynoed again I'll save a log. But,...

Help me analyze this torque curve.

The dyno owner feels the 4000 RPM plateau in the torque curve is due to a change in the timing tables. I feel it is because of the camshaft, but I'm not sure...

Maybe the clutches in the differential grab somewhat unequally.

So, Chris, what are the steps to tuning the VE table by disabling the MAF?
I would like to do this, but I'm not sure how to do it.

I have a '06 GTO with the E40 as well.

Thanks in advance!

All concerned:

I have to say "I really appreciate the feedback and suggestions." Some of the settings are a black art to me. I never would have thought that lowering the "Airflow Final Minimum...

Russ:

Can I clarify when you say "lower your main spark timing, 32* + the PE spark adder is too high." Do you mean go to Engine > Spark Control > Spark Advance > Main Spark Advance & Idle Spark...

RWTD:

I've attached the chassis dyno from September of this year. The chart very closely follows the chart from SLP as it is a 51015 camshaft with 1.8 rocker arms to make the .635 lift. The...

The factory tune is attached so compairsons can be made.

Here are the specifics on the vehicle.
06 Quicksilver 6-speed GTO LS2-402, Livernois 3RL (2.1/1.57/57cc) heads, 246/250 .631/.631 114 cam,...

The displacement was increased to 6.6 liters a long time ago.
Were can I get procedures on a VE and MAF tune?

I attached a copy of my current tune.

I'm getting codes P0068 and P0101 when the Air Conditioning is on.
These codes throw the car into SAFE MODE. This is consistant and has happened four times.

I added 10% to the VE Table as the...

Nice looking car.

I believe I uploaded mine, but message me if you can't find it and still need one. It's a 06 GTO, 6-speed.

Any kind of written counseling - positive or negative?

zzzybil: I was told that the ECM learns how you drive and makes adjustments given the tune programed. I'm not sure how much/long memory is, but I suspect many hours. Exactly what all is reset I...

Where is the feature to reset the ECM so that it starts relearning from scratch? I'm interested in this feature for GM products.