I wanted to say than you for this site. I`m new to the open source GM tuning side of things, but not to LS series engines or tuning. I did my first EFI engine swap about 15 years ago. Thanks to some of the posts on here, a few other sites, PCM Hammer, and Tunerpro I was able to fix the rich at high speed cruise issue that I have had with multiple cars. Next up is to see if I can figure out how to get my LQ4 boat to idle open loop, then return to closed loop during cruising.