Quote Originally Posted by myburb View Post
I think $31 was for HD that had 4l80e trans. Are you using vss? Although there are work arounds od, oe and 31 won't be real happy without vss.
I don't. I've been doing my homework on them. I gather that the cable adapter type works best. I figured I could tune it to run/idle before working on the VSS part but, I've read in a few spots that it's best to get it in before tuning.

I went hunting and found another '7427 with a stock BCC BJLF. Had the MEMCAL too. So at least I know I am starting with a proper match with my mask. I think I am going to stick with the $OD. It seems to have the most options