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Okay, this has been going on for a couple weeks and during this time I havent figured anything out nor any pattern.

I'll be driving like normal... not boosting or anything. I guess you can say like 40 mph or something. Then all of a sudden it will run lean for no reason and of course there's a loss of power. It usually catches itself. Sometimes it takes a second or two but then back to normal. Worst case is that it loses all power so I pull into a parking lot, leave the car in neutral and it catches back to normal.

Here's what happened today. I was driving and down shifted to second, came to a rolling stop then started up again. As I started up from my rolling stop there was a bit of hesitation then it was ok. About 20 feet away it did the same thing... this time I pulled over and shifted to neutral but it died by the time I did this. I started up and everything was ok. I drove for about four blocks and the thing runs lean again. I step on the gas a little and it only does worse by making the car jerk. So as the car rolls, I drop the car to neutral and suddenly and my AEM Uego immediately swings to rich. I shift back to gear and it is fine then dies shortly after being too rich... I think it was too rich... I didnt catch the reading on the Uego for I was in traffic. It died so I just turned the key to off then started up the car and it was fine the rest of the way without issue.

I have changed out the O2 sensor a couple days ago. I changed the fuel filter in August.

I have a RB20DET with stock ecu. Plazmaman intake plenum, HKS SSQV Bov, Tomei 256/8.5 lift cams, top mount stainless steel exhaust mani, T3/T04e, Tial wastegate 38mm, FMIC, stock injectors, Splitfire coils packs, Greddy Type S boost controller (off) and a Neo (+4% on high boost at 6000rpm and up).

Any ideas? Like I said before, it doesnt happen all the time. I drove to work and there was no problem. The temp. when this happens varies... no rain or moisture coming down. I am confused.

Thanks.

id probably look at getting bigger injectors and fuel pump with the retune as well.

as for the problem, afm, fuel pump and fuel filter are the first things that i would look at

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