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Would it be best to do a "write inter" to change the OS in my 9354896 ECU? I found a few files in the tune repository for a 6.0 with 4l80e. Can I license that file, and my ECU and write in it? I...

Ok, I will search for a compatible OS with a 9354896 ECU. Any segesions on one to use?

I have a 91 GMC crew cab truck. It has a factory installed 4l80e, and I have pulled the 454 and swapped in a 5.3. I'm running the factory ECU, and harness that came with the 5.3 engine. I have added...

Did I just post this in the wrong area? Anyone?

Not yet...

I have installed a r228 cam in a 5.3 LM7 engine. Its set up to run on a stand. Its getting swapped into a 91 Chevy truck with a factory 4L80E trans. My ECU is for a 99 truck with a 4L60E trans. I'm...

I want to swap a gm 411 ecu on a Tuned Port injection system. I have 2 ways to do it. I can flash it with a 5.3 os or a 01 G-van. It depends on if I go with coil on plug or not. I also have 2 early...

I have learned years ago to not get in a hurry. Bad stuff happens when you rush or get in a rush. No problem on the "out of the office". Hope they enjoy there time away.

Now I feel like a tool! It came in an other box, with a receipt, and a paper with what looked like random letters and numbers. It said your "activation code". I was looking for an email..... Anyway...

Hey, I'm Billy and a completely new to tuning. Just got my HPT after lurking around for about a year. I'm have cut down factory harness for engine swaps, and have to relay on other people to kill...

My wife bought me HPT pro from Amazon, an resell on there Hinson Motorsports. She just gave it to me and no application key. She never got an Email form the reseller, or Amazon. I'm stoked to get...