Unfixable Problem (still!)

[DarkGT-R]

This problem started for me about 4-5 weeks ago after changing my R32 GTR's standard airbox filter for a BMC filter. I don't think this is causing the problem but thought I'd mention in case somebody works out what may have been accidently knocked/loosened/detached, etc...

Since then the car has begun having intermittent issues accelerating (both gentle and hard) and occasionally stalls. Stalling can occur immediately after starting or driving for a while, but it does seem to occur most when either coming off the accelerator or sitting at lights. It does it on both hot and cold days regardless of temperature.

The Car's Modifications:

Blitz ECU

Fully Rebuilt and Reconditioned Engine with Competition Rings/Bearings/Gaskets/Seals)

Machined crank and fitted crank snout

Forged Pistons

I Beam Conrods

ARP Rod Bolts

Tomei Adjustable Cam Gears

N1 Oil Pump

Modified Water Pump

Tomei Sump Baffle

Front Pipes/High Flow Cat/3.5 Inch Evolution 2 Trust Exhaust System

Hi Volume 500hp Fuel Pump with upgraded negative wiring

Boost set to 1 bar

OS Giken Twin Plate Clutch

New Battery

Steps taken so far:

Induction system smoke tested for leaks

Airflow meters cleaned

Idle Air Control Checked

New Spark Plugs

New Fuel Filter

Injectors serviced and tested

Standard Coil packs checked

Engine cover removed to confirm if overheating (no difference)

Both airflow meters replaced and AFM wiring checked

Anybody able to offer any advice?

[The Dan]

I don't see anywhere in the list

Took the car to a qualified mechanic or specialist

Have you done that?

[DarkGT-R]

I don't see anywhere in the list

Took the car to a qualified mechanic or specialist

Have you done that?

Most certainly did. Learned that lesson a long time ago.

They are still investigating options, but I was also curious to see if input from this forum would help.

[R31Nismoid]

Dude - can you use the other thread please.

No need for another thread, same issue.