Big question with the 420a RS-T!!!!

[orgy714]

So right now the car is running very lean. The Air/fuel ratio needs to be tuned out and I refuse to buy any more parts for this car. So because the car is running lean, it idles somewhat rough, and also when you get on it in WOT she will buck from Fuel Cut in the higher rpms 3000 and higher. However if you drive normal, with normal acceleration with little or no boost, she drives just fine in all Gears with no hesistations. I haven't solved that problem, but it is definelty Boost related, and causing the car to cut fuel in High boost situations. I have attempted to adjust the SFMU with different disk/spring combinations but only manage to get the Fuel pressure up to 42psi where it should be at 47 to 50. So the car basically has a fuel problem that I haven't spent much time looking into.
If anyone has any suggestions on how to solve this I would be truly greatful.

[coolguycooz]

Try checking out the entire fuel line starting from the fuel pump if everything seems set right check the lines check your fuel filter might be clogged and things like that.