MAF is the Mass Airflow Sensor. It's the plug in the tube of your intake after the air filter.

No matter what programmer you run you can limp the tranny. The Predator might be a little harder than others but they all do it eventually if you run it at a high setting. The damage has already been done ...

Yeah, that's why it slips. You gotta be real careful with the K&N filters too. A lot of people oil them too heavily and that oil gets on the maf. Clean the maf and clear the code...see if it comes up again.

Why are you interested in other programmers?

Diablo tuned, no.
Cant speak for anyone else.....

There is a counter in there, and they can see the last 12 reflashes....Predator does not appear on the list no matter how many times you flash it. Pretty slick.....


Is this true for the older Predator Duramax diesel tuners as well? I have a ...

Yeah it should smoke a good amount more. Careful not to smoke your tranny though.

well right when i installed it i didnt let the tranny relearn and just started hammerin on it.. its been does since the day i put it in.. it limps into 65,85,120, never tried in tow tune...why is the trans weaker.. i just changed my tranny fluid and it wasnt even dirty so thats a good sign... you ...

what tune did you set it on when your first had this happen? how long has it been doing this? It sounds like you limped your tranny but if it does it on the tow tune then I don't know. I limped my tranny on my '05 with it on the extreme setting. I set it down to 65hp now and haven't ad any tranny ...

Hello?? Anyone????

Part# on Pred is 121234

Are you sure they won't look at it to diagnose what went wrong? Not very many people have the head gasket problem but it does happen.

Any other ideas of what it could possibly be?

Can I send the programmer in right now to get updated or do I have to have the stock programming put back into the ...

1. I don't have the part # near me at this time
2. Rev # U7185
3. 2005 Chevy 2500HD LLY

Had the Pred for a while now...has always worked good. It's an older one...last time it was updated was to the 2.02 version. Now it won't tune the truck. I wanted to re-tune it because I switched tire sizes for ...