Originally Posted by
Flux Capacitor
RS Stu,
If you deviate away from a standard conversion, It will need custom mapping and cost you loads extra !
There are very few who can do this properly on OFAB.
If you intend to keep the standard ECU, you really need to talk to someone like MSD or Collins about what they can do for you.
When I say standard conversions, proper tuners will probably have something near to what your engine spec needs but you will have to use the correct parts for the job in order to be correct.
Bigger is not always better !
Sorry !
PMSL @ jim Galbally

What will be best?
engine spec atm
2.0 16v Blacktop
low comp pistons
701s
OFAB ecu
Cossie T3
Adj cam pullys
piper valve springs.
Will a ofab chip run this ok? or will it need custom mapping regardless?