1995 GMC 4L60e to 4L80e Swap Help!

[GMCYukonDriver]

If it has that many errors, it might be a bad chip (or installed backwards?). Did the shop say whether they had tested it? The BJDR bin on this page should work for you. http://www.gearhead-efi.com/Fuel-Inj...Information-OE

I know that the Memcal unit is not backwards in the ECM. I need to take it apart and see if the chip is backwards inside the Memcal.

Obviously something with the tune is wrong. Just frustrating when it takes a week or more in turnaround time to get a fixed tune.

Thanks for the link! That's great! Unfortunately, I don't have any chip burning hardware, but if I can't get the tuner to fix this, then I'll definitely be going that route.


Just a quick general question. How long did it take you guys to learn how to burn and custom tune, and how much time did you have to pour into it?

The reason I ask, is that this build will be continuing and requiring more custom tuning, and I'm not sure how I could get the skills or knowledge to do it correctly. For now, this truck just has a Whipple supercharger making very low boost, the trans swap is the most complicated part of the setup where tuning is concerned right now. However, I also have an Edelbrock MPFI setup waiting to go on after the trans is sorted out, and I'm not sure how I would find .bin files for that setup or even start researching how to tune that on my own.

I appreciate the help!

[fastacton]

I'm still learning, but once you have the hardware, you can burn a chip pretty much right away, just start with small changes. Download a copy of TunerPro RT (and donate if you like it) and start learning how to use it. There are a good number of posts here that have lots of info on the whys and hows of tuning, so just start reading and learn as you go.

[Fast355]

I think its tune....Shouldn't be hard to find a 93-96 G30 old body style van with a 350 and 4L80E to rob the memcal out of for a quick test.