Bought demandated isx, issues tune related??

[BarelyAbleFarms]

(09-28-2025 )Rawze Wrote:  

(09-28-2025 )BarelyAbleFarms Wrote:  ...
engine date says 2006 so fairly sure its a cm870.
engine number is 79193333

I should have been more specific, its while driving. sometimes full rev is 1900, sometimes its 1700. its completely random and doesnt seem to be per gear. or even specific to high or low range.

i have been searching for the software, so far any download i find is littered with trojans and other terrible things.

Is it possible to get an insite7 and just have it tuned from scratch, from someone here that is reputable?

forum member 'running rough' is the person who specializes in older CM870's. he has been doing them for years for people on here.

Does that thing have a boost gauge?.. if so then monitor the boost as its acting up too. - it could be the turbo hanging up near 100% closed and then choking the power / rev off.

Being it is a CM870 ... you can always have the programming flashed back to 100% factory and unplug the EGR temp sensor.. putting the ecm into its it in non-egr operating mode that way. CEL (check engine light) will be on and it will have a slight boost derate but not a power derate (boost will go to 36 or so then drop back to 32 and hold). Then run it like that, at least it will be safe, until you figure out its other issues.

No boost gauge unfortunately. I have a scan tool that shows live data. I could try that.

I went ahead a sent in a pm, see if he is interested in lending me a hand.

By factory, I would have to remove the ECU and take to the dealer? That might be an option I would consider. I would like to know the truck is safe to run and that would be a good step. Harvest is here and I need the truck to haul