what have you guys with lifts and large tires used to correct your speedometer on GM trucks with the Duramax? I am running 35" Toyos. I used the superlift tru-speed on my 03 8.1L with allison. I do not know if they have anything for the 05's. Also, do you know if the tru-speed corrects the speed signal to the transmission with an Allison?


Thanks

Mick you gotta get us pictureshttp://www.dieselplace.com/forum/smileys/smiley2.gif

Predator, speedo only.

1SAST


i will try to get some pics tonight. sorry i have been slacking off, been real busy. just got the lift done on saturday. still adding accessories. almost done. need to get the nerf bars on tonight so my little lady (5'2") can get into my truck.

I am running the superlift tru-speed on my 03 on 39.5's it is dead on up to 70 then is off by 2-3 mph. I would go with that again, the only other thing we tried was the hypertech and it kept setting off the service break system warnings, same thing is happening on my bro's burban 2500 on 38's and the hypertech, he is gonna be installing the tru-speed soon.

Earlier this year I attempted to place tru-speed on my rig. But, there is a change in the connectors that came along with the LLY. Have not been able to find out if Superlift has come out with a new model yet. Now just sort of waiting to see what the new TTS comes out with...

thanks a lot for the replies. I am thinking of maybe adding the predator or another plug in programmer. I have the J/A already but it would be nice to be able to read codes and erase them if it happens. I don't know if this is the right place to put picks but here is a couple. The truck in the back on the first pic is my 03 8.1L with rancho lift that i traded for my 05. The 8.1 loves gas, especially with 35's.


http://www.dieselplace.com/forum/uploads/mick14/2004-11-18_141500_new2.jpg


http://www.dieselplace.com/forum/uploads/mick14/2004-11-18_141344_new1.jpg