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I am not new to tuning or to EFI Live but I cannot figure out how to tune this trans in a 2016 Colorado. In drive it shifts 1-2 between 6200-6400 RPM, in tow/haul mode it always shifts at 6800 RPM. ...

That's not the answer I was looking for, but at least it is honest. I gotta respect that. Keep up the good work.

Since I started this thread I will ask the question again. Can we get an update from EFI Live/Administrators on when/if EFI Live will support the GM 3800 L36/L67 motors? I need to program for a few...

Any word on when EFI Live will support the GM 3.8L V-6 (L32 supercharged) engines? Last post said it should be sometime in 2007.

A quick update: this modification to the downshift/upshift curves worked well! Last year when I towed my deck boat back and forth to the north woods I got 10.5-11 MPG depending on the weather. I...

I bought a Gateway and did not have a choice at the time. Given my choice, I would rather have XP Pro.

I am using V2.

OK, shifted all cells in the 4-3 downshift and 3-4 upshift tables down one cell and went on a 600 mile drive. Not towing saw no issues, in fact, it solved a problem I had with the vehicle not...

Joecar: Thats how I thought it would work. Going to give it a try and see if it helps.

oztracktuning: I understand your comment, but believe it will not be lugging from this change. We have...

Per request, here is the stock 2-3 up/downshift tables plotted with the proposed 3-4 up/downshift table. Note the 3-4 downshift table drops just below the 2-3 upshift table. Will this present a...

Nothing I did made much of a difference until I had the Corvette servo installed.

I used 0.3 seconds across the board for shift times. I reduced TM by 10% and bumped line pressures 10%. Shifts...

OK another newbie question. Now that I have the trans shifting the way I want, I want it to hold 4th gear longer before downshifting, and go into 4th earlier to help on fuel economy. I already put...

I am pretty sure your Avalache has adaptive spark, meaning it does not run off either the high or low octane spark tables, it is constantly somewhere in between. The PCM is constantly advancing the...

Being new to this forum I just want to share my experience with EFI Live and Windows Vista. I currently run EFI on a Gateway Laptop (Core 2 Duo processor, 2 GB memory) running Vista Premium. My...

Leave it to the trans shop to make me fell like an idoit. The screach is coming from the serpentine belt. When the engine shifts quickly at 5800 rpm the abrupt change is causing the belt to slip. ...

New issue came up last night. When it shifts 1-2 at 5000 rpm or above, I now hear a short screach coming from the trans. The shift is firm, but it sounds like bad. Initially I hada max of 25% TM. ...

Thanks for the advice. :)

I stopped by a trans shop I trust tonight. He installed a Corvette servo for $50. He did not have to drop the trans member, but he did need to remove the trans mount...

Thanks guys, I will give it a try tonight, but I must admit I am a little skeptical. I verified on my last tune that I hadall TM removed by watching both torque values (never deviated) and spark...

I am new to this forum and just started working with EFILIVE this weekend. I am trying to tune my 2004 GMC Envoy XL (5.3L 4x4) for better towing. My goal is to reduce shift times and firm the...