W22 engine and transmission upgrades

[Deaop]

Does GM or Workhorse do upgrades on the computers for the engine and Allison transmission? Would there be any real advanage to having it done?

I know about Ultra-Power. What type dealers can do the upgrads if it can be done? I read that they charge around $100.00. Guess I don't under stand all this updating.

Does the Ultra-Power do both engine and transmission?

Thanks

Ron
2002 Bounder W-22
5 Speed Allison

[Deaop]

Does GM or Workhorse do upgrades on the computers for the engine and Allison transmission? Would there be any real advanage to having it done?

I know about Ultra-Power. What type dealers can do the upgrads if it can be done? I read that they charge around $100.00. Guess I don't under stand all this updating.

Does the Ultra-Power do both engine and transmission?

Thanks

Ron
2002 Bounder W-22
5 Speed Allison

[DriVer]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Deaop:
Does GM or Workhorse do upgrades on the computers for the engine and Allison transmission? Would there be any real advantage to having it done? </div></BLOCKQUOTE>The short answer is "No". Unless something drastic changes in your transmission or engine there's basically no need to have your computers re-flashed. GM develops and installs a "Calibration File" that is written to the Powertrain Control Module or Engine Control Module if you have an Allison transmission. Allison transmission writes a separate file for the TCM or Transmission Control Module. The boss is the PCM/ECM and they communicate over what is called a bus. The ECM communicates with the TCM and basically gives instructions to the transmission about things such as but not limited to RPM and speed.<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Does the Ultra-Power do both engine and transmission? </div></BLOCKQUOTE>Ultra-Power is an after market piece of software that is written to the PCM/ECM. The TCM does not require separate programming when installing UP.

[Don and Kim]

But it would be nice to have the Allison shift into OD, (5th gear in my case) sooner than 55 MPH. I find myself speeding up to 55 just to get it into 5th gear than slowing down if 55 is too fast for the road/conditions. Just seems like the engine is revving faster than it needs to on level terrain.

[Richard 34A]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Don and Kim:
But it would be nice to have the Allison shift into OD, (5th gear in my case) sooner than 55 MPH. I find myself speeding up to 55 just to get it into 5th gear than slowing down if 55 is too fast for the road/conditions. Just seems like the engine is revving faster than it needs to on level terrain. </div></BLOCKQUOTE>

Don and Kim;

I agree with that... my motorhome seems like it is working too hard, at times, on a flat, level road with no real load, because I'm traveling 45-50 mph. One of my local roads has a maximum of 50 mph so the transmission stays 'stuck' in fourth gear, all the while sounding like it should go to fifth...