Hey guys, as some of you know, I now have a R32 Skyline. The car has been running fine, and out of nowhere it started hesitating and missing under boost. If I keep the throttle at say, 75% or so, I won't have any hesitation, but the boost only goes up to about 9 or so PSI, if I romp on it, it will start to sputter and hesitate.
Mods are as so:
Stock turbo, manifold.
3" from turbo back, no test pipe
Front Facing intake manifold
Intercooler
Stock Injectors
Stock MAF
Walbro 255
LS1 Coil packs (No more ignitor)
Also running ECUMaster DET3 piggyback.
Also, the car has had these mods when I first got the car, and this literally started happening about a week ago. I thought it was bad gas (got some gas at a suspect place), but I'm on my second batch of gas, and I'm still having the problem.
The wideband goes lean (13:1) when it begins to stutter. So I don't think it's an issue with spark blow out, I would imagine that if that was the case, it would go straight rich, rather than lean.
I'm still running the same plugs, but again, I feel that if it was an ignition problem, it should be running rich rather than lean.
Oh, one other thing, I was playing with the DET3 as far as fueling goes, but when the problem arose, I went back to the stock map.