if it were me , an' I had a shift lite , I'd probably set it to where the top of my horsepower peak is according to my last dyno results . Maybe a couple hundred RPM prior to that peak,but definately not AFTER that peak . All you'd be doing then is wasting yer time on the downward curve of yer power....(and taking a chance getting to close with yer rev limiter) instead of banging for the next gear . Just me...but thats probably what I'd do .