Nistune

[onebadz3186]

Alright everyone I need your help I have a 1986 Nissan 300zx

MODS
-Relocation pipe
-Holset HX35
-Evolved tuning injectors 550cc
-255 walboro fuel pump
-Aem fuel pressure regulator
-Innovate wideband lc-2
-Nistune

I cannot figure out nistune at all I have tried adjusting the k constant I have tried adjusting the latency ive tried messing with the fuel maps ive tried so much stuff last night I had it running perfect ripping the car in 3rd gear at 18psi well for some reason today I go to drive my car with the same tune and it wont run worth of s*** I didn't know if any of you had the same mods as me and possibly send me your tune through email I would really appreciate it I really wanna get my car on the road.

[evildky]

Welcome to NICO!
I have almost no experience with nistune so i'm not much help there but. The car was running fine, nothing changed wiht the tune now it doesn't run? Sounds to me like something lost connectivity or stopped functioning.

[8631z]

did you ever get the car to warm up? if not the cold start maps might be off due to the larger injectors and mods. injector latency is more for tuning idle and k constant is for cruising.

ideally your k constant should be adjusted so you see close the middle on the long term fuel trim when cruising under no load. aka flooring it.