ok check it out what's the difference between:

Eprom upgrade dohc NMF
eprom upgrade dohc NMC
eprom ugprade dohc NAF
eprom upgrade dohc NAC

what's this mean? also, what's the difference between jwt ecu and stillen's? thanks

 

Nothing

 

doesn't stillen just resell the JWT?

 

Probably the box code/ECU revision.

flyry110: If you really want to turbo the car, just goto JWT.

MK

 

Yup. Got mine through Stillen and it has a little silver JWT sticker on it.