First question is, does anyone know id the KA FPR is interchangeable with the SR one? I've read alot of mixed opinions on it, mainly people stating that if you order a Nismo unit, which is a direct replacement for the stock fuel rail, that it will bolt onto a KA motor. My question is in regards to OEM.

Second question is i've been googling for hours on end and finally came up with a post on another board that a member asked. He wanted to know what were the symptons of a FPR going bad were and one of the Moderators said to test the FPR by disconnecting it at idle. If the rpms slightly increased, then it is working. Does anyone know if this is true?

 

i know that whenever i pull the vac line off the fpr the idle drops a little and get irratic.

 

See, when I pulled mine off...it might of got irriatic for a second...then its normal

 

so you tested your fuel presure ?

 

Yeah I pulled 38psi idle, 48 vacumn line unhooked. I am starting to think more and more that its my recirc valve leaking under heavy load causing me to run extremely rich at high rpms.