I've never heard of "PCM Editor"...but there is no way to "edit" our PCM's anyway...as for the FMU's, there is no problem with them, and they wont destroy your fuel pump. The RRFPR could be considered "innacurate" when you compare it to a 1:1 hooked up to a standalone like MS. However, they can be very accurate IF you take the time to tune and you stay within the regulators limits AND use a good quality RRFPR.

 

Ok 03neon, I am not sure either about the program, my friend is the one who knows about all the car stuff, not me. I am very uneducated with cars an turbos so I depend on him alot but, hes not a neon man hes a chevy man(S-10 turbod an Colbalt SS(supercharged). Please explain what this RRFPR is, im clueless. An 03neon, do you think that Hahn kit is nice an worth the money? Thanks man