Forum Discussion
- Sully2ExplorerAint no chips for ISC and ISB engines.... You need the computer re-programmed is all
- LetsRVExplorerLook into the Banks Power Pak. We also have a 2001 K-Star, same engine and the Banks system made a very significant difference when installed.
- John_WayneExplorer IIThe engine can take the boost BUT the trans can't take the extra torque. So you will go better till the trans gives up.
- Passin_ThruExplorerJohn Wayne, I'd like to see proof of that statement because they use the same Allison in heavy trucks pulling 80,000 lb. With a MH you are only pulling around 50K so it equates to the same thing. IF i can floor a 500 HP Detroit with an Allison I can floor a MH with a 500 HP engine or did I not interpolate correctly? OH, wait, I only have 30 years as a Master Mechanic so I probably don't know what I'm talking about.If you turn a Cummins 330 HP to 400 HP you go up from 900 for 1200 ft lb torque and that is not enough to tear one up for a million miles. Call Pittsburgh Power and ask them.
- moishehExplorerpassin thru: You have omitted the fact that not all Allison's are the same. A MH could have a 2000, 3000 or 4000. All have different ratings for Max. torque and the GVW of the coach, The unit in an 80,000 lb. truck is very different. Your years as a mechanic should have made this obvious????
Moisheh - JimM68ExplorerIf your your 2001 is an electronic ISC (8.3 liter?) with an Allison MD3000 trans, which is likely I think, then cummins themselves can and will (for a fee) boost it for you. A factory cummins tune uses torque management to limit max torque to 1050 ft-lbs, and to reduce torque briefly during the shifts to keep your trans happy.
Call your local cummins dealer service center for info.
I haven't actually gotten it done (mine was still under warrantee when I discussed it at nPower in Hodgekins, IL) and the service guy said it would void the warrantee and I should wait. He said he could get 400 HP out of my 2008. - hipowerExplorerThe ISC 350 Cummins in my 2003 DS would not accept a simple reprogramming when we had the computer hooked to it. It seems that some will and some won't. At about 35,000 lbs loaded and towing the performance is adequate, but as with many others I would gladly accept more power, I just didn't want to spend a lot of money to get it.
If adding performance to a diesel engine is important to you as an owner the mention of Pittsburgh Power is an excellent suggestion for a company that is extremely good at doing the upgrades needed, from mechanical changes to computer upgrades. They are not inexpensive, but they are very good. - John_WayneExplorer IIWell Just passin thru I just checked the Allison web site and they have 9 transmissions listed for Motor Homes with torque ratings listed from 575 to 1950. So depending on the transmission you have you are limited by torque. So I stand buy my statement even though I not a Master Mechanic.
- Sully2Explorer
Passin Thru wrote:
John Wayne, I'd like to see proof of that statement because they use the same Allison in heavy trucks pulling 80,000 lb.
No they dont either! - Sully2Explorer
John Wayne wrote:
Well Just passin thru I just checked the Allison web site and they have 9 transmissions listed for Motor Homes with torque ratings listed from 575 to 1950. So depending on the transmission you have you are limited by torque. So I stand buy my statement even though I not a Master Mechanic.
High 5....Time 2
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