Diablosport Forums

Dschev1 wrote:ib82
Did setting the original wheel size work? or did you have to adjust the numbers.
Just curious -

I don't know why it made a difference, but going in and manually setting the wheel/tire size (to the actual stock dimensions) cleared up the problem.

I'm glad its working, the new tune does feel like an improvement.

Cool glad to hear that- I've notice a lot of people state they work fine after resetting the factory size manually.

I had the same issue with mine my ABS light comes on after 4-5 miles of driving. I have the U7193 with the latest update. Changed my tire size and now the light comes on. I am running 37/13.5 MT on a GMC 2500HD 6.0L.

From what everyone has posted they have gone in and changed the tire settings till they got the right settings to keep the light from coming on. I do that and it throws off my speedo and all the other stuff tied into it (MPG,Odometer,ect.).

I have the Basic Diablo tune installed the only change was the tire size tried installing the tune both ways standard and metric. I love the added power it gave but do not like this ABS issue. The only performance parts on the truck is a cold air intake and I have 9" lift with 37" tires.

GMC04
Try setting the tire size in the metric version manually, Then start working your way down on the size. (Like if stock is 250/70/17 try setting it at 250/68/17 then ***/67** and so forth)
when adjusting these tire sizes make sure to follow these steps.
1- boot up programmer
2- pred tune- Modify parameters
3- reset parameters to stock
4- install reset program with no changes to program
5- start vehicle and let it run for a minute or two (i did this while rebooting the programmer)
6- after rebotting it select program to install
7- modify the program parameters making adjustments to the wheel size
8 -then load the program.

I found that if you just start changing the program parameters without resetting it and starting the vehicle the predator starts changing / converting some setting back to stock.

Again I'm no pro at this programming I can only let you know what I did and how it turned out for me.
I would start my setting at 1 point above my stock and start working my way down until you get it.

Dschev1

I will go by what you posted above and see what I come up with. Thanks for the info hope it helps!

They cant resolve this with a differnt tune???? Would be a hell of alot easier. Mine is still messing up!!!

Has anyone tried the update and had it not work for the ABS light???? I'm a little worried now.