I have an 05 Duramax with a modified stock air box {cut an opening on side and insulated, per diesel page article.}I am using K&N OEM replacement filter.I have a MBRP 4 in. SS catback exhaust, and your U7185 programer. The first time I tried the 100 hp mode the engine hesitaded had a intake fault ...

any word on the single user version?

Other companies are offering a larger tune then even 160, is there a way you can make it downloadable like the RLK for the dodges so we can run it?

Do you have your egr blocked? (blocker plate)

I read on one thread where there are some issues with the CALID ending in H. Is this resolved in the 27update? If so does the fix include the J CALID?

How about End User CMR for Cummins

right but will you be able to reprogram multiple predators on ONLY 1?

Any ideas on how the end-user version will function - will you have to purchase license like other softwares or will it limit you to 1 vehical? Also is there any reads on CMR in general?

Does the U7131 keep the a backup of the Stock OS on the handheld?

RobertJacob

have you checked the codes? Does it do it stock? Have you changed your fuel filter? The 2000 rpm limit sounds like a 1093 code, the usual causes of a 1093 are
1) clogged fuel filter
2) the rail relief valve spring is weak.
3) running a BIG tune - (65-85 isn't big :))

Usual fixes for a ...

RobertJacob, Have you changed your fuel filter lately? What code did you get a 1093? If so and you have changed your fuel filter go to one of the larger duramax forums and search of 1093.

Are there any RACE tunes for the LLY like you have out for the cummins?