Hi,
I have a DBC LQ4 with a Texas Speed stage 1 cam, 8.1L oem injectors, headers, cold air intake, nv4500 trans. I couldn't find a 6.0 ecu, so I'm using a ecu out of an 01 5.3 Tahoe that I had laying around. I have no idea if you can flash in a complete tune from another vehicle, so I went through and manually changed every setting to match a stock 6.0 file from the repository. My problem is on cold starts it immediately revs to between 1,800 & 2,000 rpms, then it settles down to a normal idle after a few seconds. I'm concerned that reving to 2k before the oil reaches everything can't be good! After the engine warms up for a few minutes the flare is minimal and on warmer mornings the flare is more like 1,200 rpms. I don't know if the problem is caused from me missing something or if it's because the ecu still thinks it's a 5.3?
Please note the tune is still stock other than being deleted.
Thanks! Dave
Jeep 6.0 Base Tune.hptJeep 6.0 Startup log.hpl