*** Help Needed *** With new set-up

[Ashley]

Hi Nistune Team

After all the problems I had with the pathfinder MAF

I just went out an bought a N62 300ZX MAF and 440cc GTR injectors, I have installed all the goodies in the cars and after changing the K value and all that she runs fine.

But If I try to get the AFR correct things just go wrong, If I set it to 14.7 at Idle then its close to 17 - 18 AFR at 3000RPM If i set it to 14.7 at 3000RPM at light load then she runs extremely rich at Idle like in the 10-11 AFR range at idle

If I change the injector latency then the whole map goes wrong, These are Nissan 440cc injector from a GTR I have tried almost everything there are no boost leaks and the fuel pressure is fine.

Please any help will be appreciated

[kenbam]

You will never get it spot on across the whole range. Set up the k multiplier as close as possible as per the instruction manual and then just set your tables to acheive desired A/F ratios with a wide band O2 sensor. Disregard the A/F ratios on the table as they are never going to be spot on.

Latency for those injectors are 1520 uS

[Ashley]

Ok so there is no way I can get it to balanced out at 14.7 AFR through the whole range with the Map set to 14.7 AFR.

it has to be fine tunned on the fuel map

I am using the 1540 Injector latency

[chris2712au]

your narrow band can fix up the idle and off boost if you set it correctly