Have been thinking of switching to EFILive for my lly. It's currently a stock transmission that has had a predator run at the 65hp tune. Just wondering how difficult it is to write your own tunes and such. Also I have been doing a little racing at the local strip which is an 1/8 of a mile and I have read that the weak link in the tranny is the 4/5 shift. If i locked overdrive out, would the tranny hold the race tune in 1-4? I know there is no definative answer but just wanted your opinion. Thanks