[GMRULZ]

Originally Posted by Padre

Here's one of the shakedown runs from last SUnday:



Each run got worse. As I have been learning, the 6L80E has a "trans adapt" which adjusts the tranny on the fly, so it is very difficult to get a consistent run with so much power.

What I have done for the next time I hope works: I was looking at the tranny tune and trying to find some guidance for how to tune it for a supercharger. Well, it occurred to me that GM already did it for me: the CTS-V.

So I got onto HP Tuners Repository, downloaded a 2011 CTS-V (Supercharged LSA 556-hp motor with a 6L90E) stock tune file, and copied over the intertial, shift time, and shift pressure tables.

Drove it a bit on the street today, and I like it better than my previous attempts to tune the tranny. But you really can't test a WOT 1-2 shift on the street.

My tranny tune worked pretty well for the bolt-ons and cam, but the D1 is a different animal/beast.

One more attempt this Sunday to get an official time before Easter. Wish me luck!

Oh, and I bought a new Daily Driver:





100,000 miles. Hmm, wonder how hard it would be to put a CTS-V/ZL1 LSA motor in there?

Padre

First congrats on the 10`s man!!! Awesome! Let me know how the trans tune works, when I add a converter I may need to pick your brain, or even possibly have you send me your hptuners trans file..That is if you would be so kind.. We lowered the commanded shift and it worked and shifted vs going into the limiter and not shifting, but still not quite what I would expect. I figure w/ the converter my issue will get worse since I have the blower. Sounds like you are on to something w/ the CTS-V file.