im gonna get the pettit unlimited cause i feel the stock twins are more than enough for me(for now) and will do the downpipe and all the mods that are supported with the ECU. my question is how exactly does the pettit unlimited ECU work? i heard that there was chips that are changeable. is this correct??? how will the ECU know that i add a new performance part? will it richen it up or what. thanks for the help.
kris

 

Its got 2 chips..
one is the timing curve ( its advanced!) and the other chip is boost and fuel curves.. Its a great piece... i know cause i have one for sale

~Jonathan