+1 on that, i wont ever have my car running near 13.0 let alone 13.8. even on the giggle gas my car only hits 12.6 at 5400rpm and then richens back up to around 12.0 all the way through.

seems to me that you would make more power if your A/F was around 12.0-11.5 and you would never have to worry about blowing you junk up when it gets cold again.

BTW: when it does get cold again your car will lean out even more and potentually blow up, that is the reason alot of lightning motors blow up around here.