Forum: GM PCM Tuning & Diagnostics

I'm working with Sinister to get a great tune on my modified 4L60E trans. I'm currently running a Performabuilt Stage 2 with a Monster 2800-3200...

Word of warning to those of you who use HPTuners... EDIT 1:The plot thickens, when I originally received the interface, the paperwork that came...

I, along with many others, have been using the Tunercat software to tune my 3.4/3500 hybrid in my 95 Camaro. While playing around with tuning, I've...

I have a Turbo 3.5 LX9 that is tuned PERFECT up to 6300rpm. I'm very happy with the tune however the computer wont allow me to tune past 6400 RPM or...

Andrew's site is toast. Did anyone save it, or know where the info can be found? Also Gary's tuning intro works...but none of the pictures are there...

On the DHP tuner programs, is that program still around for sell these days? If so we're can I buy one for my self. I know if hp tuners but want...

Can anyone email me a stock tune for a 2001 Pontiac firebird 3.8 automatic for hp tuner.

Ok guys I am new here. First timer... I have been a mechanic for my hole life. I know engines inside and out. Along with the rest of most cars. But...

So here goes, I have a 1988 Suzuki Samurai with a s/c 3800 in it, backed by a 700r4. I have tuned and been running without a vss input to the pcm. My...

I've searched and searched and have gotten a lot of mixed info ... I have an 01 firebird 3.8 with a 70mm on 12 psi . my question is how can I run...

Lately I've been having some grief with the maf on my camaro and I was wondering if there is any diagnostic gauge out there that can read what the...

Question - Will this work? I have a 94 3.4 Camaro. MS2 V3 running fuel Stock ECU tuned by ED Wright of Fast Chips running timing and trans....

Hey guys, I've just started getting into tuning my car (It's a 1994 camaro 3.4 manual trans.), I just got a laptop, C.A.T.S. Tuner, and an ALDL cable...

Does anybody know of a person in the Seattle area with a code reader for a 1994 Firebird and/or Camaro. It's a 12-pin but with a programmable memory...

I'm in the process of building a 3.5/3500 conversion engine. I have the mechanical complete. Infact the car starts and drives. there is a definite...

So this is on the LS1, but I am pretty sure this is not an engine specific issue...I'm stumped as hell. First off here is a video of what is...

I have a megasquirt v2 and a 01 camaro i want to wire it into the stock ecm clips so it would be a straight swap without cutting into the stock...

I'm no stranger to tuning, a few years back i used the DHP tuner extensively on my car. That tuner program required allot of work. Had to scan, tune,...

Read everything I can find- cant get it answered. Tunerstudio MS 2.6 code Im setting my MAPDot- threshold: I watch the graph in the...

Hey Guys, My buddy has a 2002 Sonoma with a 4.3L engine that has the two of us stumped. Recently it started throwing the P0101 code for the maf...