Has been both the lower and higher HP systems.

For the trouble that they provide if you can afford an aftermarket multiport system it is quite the leap ahead vs the Fitech.

I run 40-44 degrees under light cruise and get it nice a lean. Nice thing about an aftermarket ECU is that you have unlimited control of every parameter vs set values + or -. Then if you get a tuner involved, might as well spend the money towards something that you can get more benefit from.