R32 Gtr Gremlin

[ShadowGTR]

I have a rebuilt r32 gtr thats suddenly developed a problem.

Its running a power fc with z32 afm's, 700cc injectors.

I got nabbed by epa and had to revert alot back to standard, then once on the road again it was re-modded, car ran as it should the whole time.

Drove it to my brothers house that weekend and it was fine but when I went to leave, the a/f ratio gauge went nuts saying it was leaning out, however the exhaust temp went lower and injector duty was up compared to normal so I'm assuming it just went really rich and the a/f gauge couldn't read it properly.

At first I thought the plugs had fouled so I did a few accelerated bursts just enough for some boost to see if it made a difference and the injector duty went through the roof, 20ish% more than usual. Even at idle it registers as lean on the gauge until it gets upto operating temp, then its fine at idle but even the slightest amount or throttle and it goes nuts.

It wasn't a problem that gradually came along, it was instant, which leads me to believe its electrical, a sensor or meter that affects the amount of fuel the computer wants to use.

The o2 sensors have only done approx 3000km's, the afm's were bought second hand but never used(apparently).

Personally I'm thinking its either something wrong with the afm/s either a busted element, faulty circuit or connection. Or as stupid as it sounds maybe even a busted fuse? will be checked tomorrow but its got me stuffed.

Anyone else have a similar problem? or have any know how that could help me out?

Would be greatly appreciated, thanks.