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I watched this video on YouTube (https://www.youtube.com/watch?v=bCbi-boBCVo) about driver demand and torque settings for a Gen V and in listening to what he says and compared to what my settings...

Thanks. I am able to tune the ECM with no issues, it's just the TCM/Trans where the issue is. I have not tried the fast learn procedure yet, but I can give that a go.

Jim

Hey all, I have a 1972 Chevy Nova and I put a GM connect and cruise LT4 with an 8L90 trans in it. I have had nothing but issues with this trans as it just wont shift correctly and now the trans is...

So my '72 Nova has been "done" for 2 years and I have had a transmission issue since day one. I installed a GM Performance connect & cruise LT4 & 8L90 transmission. The engine runs fine but the...

Hello all, I am in need of some help and my search brought me here. I own a 1972 Chevy Nova that has been completely restored. I purchased a GM Performance connect and cruise package for the engine...

I am back from my cruise...yes it was wonderful...I loaded the channels per your instruction and also loaded the latest tune you sent. I must admit it was different but still awful, especially when...

Perfect, thanks. Once I get this done I will post the results here.

Jim

I do not have a bead roller but I will see what I can do. I tried to import the xml file you sent as a layout in the editor but it failed. Any easy way to get all these channels without having to...

I will get it ordered tonight. Can I ask how you secure the honeycomb in place? And I assume you can cut this with a pair of metal shears or a Dremel?

I really appreciate you taking the time and doing this for me. I am going to try to get out tomorrow with the new trans tune and data log but my wife and I have an early flight Friday morning for...

Yes, in fact I used to have a 2017 Corvette with this exact engine and trans setup before I bought my wife a new 2021 vette last year. I understand what your saying about the way a car drives and I...

Meaning, drive-ability is horrible. It shifts super fast from 1-2, then sometimes hangs from 2-3 and if I get on the throttle, it downshifts to what feels like 1st or 2nd gear and I feel like I am...

Actually I posted the wrong tune file. In the newest tune file (attached) the tire size and gear ratio is correct. Also, the ECM/TCM speed is within 1 mph as I used my GPS and also tested it with my...

I have 3.50 gears and a 27? tire. I know nothing about HP tuners or tuning but purchased it when I got the engine and trans installed.

I have a GM connect and cruise LT4 with the 8L90E package in my '72 Nova. The default tune for the trans is horrible, in fact it's so bad I can't even drive it. I have had an online tuner attempt to...

Perfect, thank you.

I have a 1972 Chevy Nova that has the LT4 with 8L90E connect and cruise. I am having a very hard time getting the tranny tuned to shift correctly and what doesnt help is the channels that are listed...

Update - I replaced the Map sensor (outlet side) and nothing has changed. The Map sensor is still jumping to 400+ at times.

I have a 1972 Chevy Nova and I put a GM performance connect and cruise LT4 and 8L90E tranny in it. I have never been able to get the tune or shifts right and even after bringing it to a local...

Thanks for the info. I can definitely see it better in 1080p.

Jim

It's listed on the main page but not on the export. It only lists the 4sp and 6sp options so I cannot export. I found a video on Youtube where someone tunes an 8l90e and says it has to be imported...

I know...I am not sure this will work with my LT4 and 8L90E tranny.