Outer Limits 4x4 Board

hey mate, im running a wideband air/fuel meter and guage so i havent allowed it to get lean enough to ping as im constantly monitoring afr's.

i have been driving it in a safe way and control boost with the throttle so as i dont go over 4psi anything more and it starts to lean out in a bad way.

i havent installed an aftermarket FPR, installing one and raising the base fuel pressure can work, the problem is when you increase the fuel pressure, it increases over the whole range so it will run extremely rich off boost.

according to a tuner from another forum im on, a solution to this is to use a malpassis 1.7:1 FPR, apposed to a 1:1 FPR, what this does is increases fuel pressure 1.7psi to every 1 psi of boost.

at the moment ive unsoldered the factory eprom from the ecu and have installed a socket, which allows me to modify the ecu data, write it to another eprom and put it in the socket.

i still plan to go the nistune board and get the gas running when funds permit.

perhaps ring some tuning shops in qld and ask if they do emulator tuning for nissans.

wow you know a hell of alot more than i do about this. i was thinking of putting a haltech interceptor in to re-tune the motor.... or am i better off going with a stand alone. will that solve all my problems or do i have to look at getting bigger injectors and putting that fuel reg on you suggested? when it comes to mechanics i can do it but computers and electronics i am still a novice.

i really appriciate all the help you can give me.

as for the ecu, you could use a haltech interceptor, or you could go with a nistune chip, this chip makes the standard ecu fully programmable.