Fairly green on these transmissions and don't want to grenade it making mistakes in tuning. My issue is this tranny and LT engine are in a Jeep so am looking at first gear to simply be a move off the...
Type: Posts; User: JKLTGuy
Fairly green on these transmissions and don't want to grenade it making mistakes in tuning. My issue is this tranny and LT engine are in a Jeep so am looking at first gear to simply be a move off the...
Some experience I had at the other end of the scale vehicle wise. My 2008 Jeep is running a 2016 5.3LT/8L90 setup. When I got the program back from Motech in Vegas the shifting was fine. So Newbie...
As mentioned in another article I discovered that if you increase the gear ratio for the rear end it causes shifts to be more agressive and kick down way earlier. Changing the numeric ratio number to...
Do you have a T87A or T87. The A type needs to be unlocked and I believe that cost is around the high $300's mark. I know the TCM and the PCM don't mate with each other from the factory as I have 2...
I had a similar but reverse problem in my Chev L83/8L90 Jeep. I saw the gear ratio set at 3.42 and thought hell I have 4.10 gears. Set it to that and it would kick down at 60mph to some ungodly gear...
There is a pile of differences in I/O assignments from 2018 to 2017. If the harness is for a 2017 engine then I suggest you get your hands on a 2017 PCM/ECU. I found out the hard way installing a...
Yes transmission program is in there from what I see. Careful going in there as it is a licence to kill your tranny if you are a learner.
A_Texas thanks for the response. Watching that video tells me a lot and I have a shortcut to that guys Goat Rope Garage. Actually going to do an all MAF tune soon with a fellow tuner on this forum....
Under TORQUE CONVERTER --> GENERAL -- > TCC Adapt my settings for Trans Temp min/max are 30C / 100C yours are 40C/120C. You will have to change to metric settings for this or convert to deg F but we...
TB I have an L83 LT in my JK Jeep. When I first started it the fan (2017 SS Camaro PWM unit) ran at 100% after about 3 seconds of startup. It was the AC not plugged in to the pressure switch. After...
Was looking through my LT 5.3 L83 tune for my Jeep today and noticed under AIRFLOW --> Electronic Throttle Area was listed as 3690mm2. The throttle plate is 80mm so that area should be 5024mm2 minus...
I put a 2016 L83/8L90 in a 2008 Jeep. I got the engine with 2016 harness and 2017 E92 ECU. The I/O assignments are different between the two and we had a hell of time getting it to run leaner. Also...
I am in agreement with 5FDP. Once the VIN/Credits are verified in your HPT you should be able to tune off line.
1. Do you have an engine controller or just a tranny controller? Your tranny is an 'E' model.
2. You may be getting interference on the signal wire between the pulse gen and the ECU. You said a...
5FDP - It sounds like I can run the rear O2 sensors in an extension bung to satisfy the ECU monitoring? Is this correct.
I personally do not have HP Tuners yet but have a person who can do the work for me who has the unit and software. I am going to buy my own soon. Spilling $$$$ trying to finish this project.
So...
New to the forum. Have a Chev 2016 LT / 8L90 installed in a 2008 JK Jeep Wrangler with a Motech of Las Vegas install kit. First start is very soon. I want to disable the downstream O2 sensors and not...
New to the forum. Have a Chev 2016 LT / 8L90 installed in a 2008 JK Jeep Wrangler with a Motech of Las Vegas install kit. First start is very soon. I want to disable the downstream O2 sensors and not...
Two things come to mind;
1. GM program some sort of a slip in the TCC to counteract the engine firing pulses - really? Who notices those things
2. GM had issues with TCC chatter and supposedly...