2 Attachment(s)
Cold Start Tuning a 2006 with a 6.7 Swap
Hi Folks,
I've been working away on my 6.7 swap into a 2006 Ram and could use some advise around cold starts. The truck is running a complete 2008 6.7, hold for the MAP sensor, off the original 2006 ECM. My tune is based largely off the 2007 6.7 parameters. I have it running pretty happily thanks largely to the great info and advise on this forum.
The last area I'm chasing is cold start; the 'make a little change and test' method is tricky here since you only get one a day! I've been able to improve starts from above freezing from 'embarrassing smoky mess' to 'could be stock', but there's still room for improvement now that the temperatures are dipping down to -16C (around 3F for those south of the 49th). In the log attached you can see the roughness on initial startup; this is accompanied by some white smoke. It smooths out and cleans up as the ECT is getting close to 0C.
Attachment 106883
Attachment 106884
Suggestions?
Thanks,
Chris