Hoping someone could help me identify an issue I am having.
Car is a 2015 N55 with VRSF intercooler, charge pipe, and catless downpipe. Tuned on MHD stage 2+ on 91 octane. Car has been running perfectly fine until the other day. All of a sudden while at WOT from about 5200rpm-5800rpm the car hesitates like loss of some power then back to normal . Before and after that rpm it’s fine. I have brand new spark plugs and coil packs. Not even a 1000 miles on them. Also, my fuel rail pressure in that rpm range dips extremely low. Normally it’s around 2400-2800 in that rpm range. Today it’s from 1800 to as low at 1200 in that rpm range.
From the research I’ve done it could be anything from a bad HPFP or LPFP or bad injectors or a clogged fuel filter but I haven’t seen anything concrete.
I woud rather not have to throw money in different parts. Can anyone guide me to what they believe the issue could be?
How many miles on the car? What’s the maintenance history of the fuel system?
The discussion has been shuffled over to the model specific sub-forum.
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