biggy238
Active member
- Joined
- Aug 3, 2008
- Messages
- 10,993
So now that I have my mutant running, it's become apparent that the rail pressure is an issue.
I've coupled the 6.7 rail and lines to an 03 cylinder head and 03-04 injectors. Fleece 750 6.7 IP.
What I found initially was that the rail pressure maintains 26.4 until a significant throttle input, at which point it drops to 11k. I haven't researched the related DTC yet, but I'm guessing this is the strategy when rp has been unexpectedly/uncontrolled- high.
I thought I had addressed the scaling, but after reviewing the file I used, the 06 auto stock file used 180mPA as the top of the sensor range, and what appears to be 160mpa as the DTC threshold.
After digging, it looks like 21k was the max operating pressure for the CM849 engine.
So, I re-scaled the sensor to 200mPA.
My question is, where else do changes need to take place in order for this hardware combination to function? I'm assuming I will have to modify the threshold for the DTC at the least. I poked through some of the tables and parameters last night, but dozed off before I found anything that jumped out at me.
I've coupled the 6.7 rail and lines to an 03 cylinder head and 03-04 injectors. Fleece 750 6.7 IP.
What I found initially was that the rail pressure maintains 26.4 until a significant throttle input, at which point it drops to 11k. I haven't researched the related DTC yet, but I'm guessing this is the strategy when rp has been unexpectedly/uncontrolled- high.
I thought I had addressed the scaling, but after reviewing the file I used, the 06 auto stock file used 180mPA as the top of the sensor range, and what appears to be 160mpa as the DTC threshold.
After digging, it looks like 21k was the max operating pressure for the CM849 engine.
So, I re-scaled the sensor to 200mPA.
My question is, where else do changes need to take place in order for this hardware combination to function? I'm assuming I will have to modify the threshold for the DTC at the least. I poked through some of the tables and parameters last night, but dozed off before I found anything that jumped out at me.
Last edited: