I am considering using U P 8.1 engine tune on my 32 foot 2006 Fleetwood Terra lx motorhome. My research states that it should have an Allison 6 speed, Im sure it has a 5 speed transmission. Ques. 1. Will my vin tell which trans I have. Is there a better way to id my trans? Ques. 2 My 8.1 has 19,000 miles on it, being a 2006 does the Allison trans need a computer upgrade, or is that upgrade for earlier transmissions. Ques. 3. I am going to upgrade the suspension i.e. sway bars f + r and your rear track bar. I am going to upgrade in stages. I think I should start with your rear track bar for my w22. Your advice please Ques. $ Can you recommend a Workhorse chassis shop in the Phoenix area?. Thanking you in advance, Robert Myers, Mesa, AZ. ph.605-415-6518 ( robert myers, 03/14/2018 )

Not answered yet.

I f I have you program my ECM, do you know if it will effect my emissions test here in Denver CO, or will I have to have a stock
ecm for the testing? ( Kevin, 03/01/2018 )

We have no issues passing emissions with the custom programming in place. You can keep the stock ECM for a backup or peace of mind but it really is not necessary.

Hello I have 2003 Workhorse w22 8.1 . I have been running strange problem . When the motor home starts and we drive it down the road it runs fine. But when I stop for 10-15 minutes it start up very rough and will not take the gas. It will only drive at 10-15 miles an hour. I stop and wait about 10 minutes and it starts up and runs fine. The codes it pulls are P1516 and P0151 . Does this sound like a computer problem and need reprogramming ? If that is the case I would like to get it in to you as soon we get back in town. I did the wire pull and checked the connections at the throttle Body and the tac and found nothing. The unit has 18530 miles on it. I did install the rear sway bar that I ordered from you and it works great. ( Gary Croson , 02/28/2018 )

Not answered yet.

you show allison tune for 01-04 do you have one for my 2006 2500HD with 8.1 If you
do how much for both ecm and tcm if I send both to you and how long does it usually take thanks ( Dave Dvorak, 02/06/2018 )

Our tuning on the Allison transmission computer is only for the 5 speed controller up to model year 2004. The 6 speed controller in your pickup is not supported. We can tune your engine computer for $595 and if you send yours in instead of buying a core it is a 1-2 day turn around.