right heres the prob im over fueling but i can get to bottom of it so i think its going to be remap time,
when i got the car it was stock other than a remap to 1.2 bar on 96 phase 2 wrx.
so i caught the mod bug full 3.5 inch exhaust a decat, apexi power filter , front mount intercooler tdo5 16 g a boost controler and left at 1.2 bar.440cc injectors i think they are there yellow ones ive been told there 440cc

fuel pump as far as i know is stock and presure reg is stock but ive ran it from the turbo insted of the manifold , these are all mods to get within the next coupe of weeks.

when these mods where added it was real good fun and went like a rocket now its just just lagging at high revs seems to run out of power and pop a lot when i let off and spit flames what could be the problem other than getting it mapped and is it possible that the stock grade 6 plugs are causing the problem.
just to add also full throttle under load or say at lik 50 in 5th its pinking an awfull lot

 

Do not let this happen, I cannot believe how many times I have heard this comment over the last few weeks . If this is audible to the human ear inside the cabin it's major detonation, any detonation is bad but continuing with this will see certain death for your motor.

The standard fuel pump will not provide enough fuel for a TD05 at high(er) engine rpm, let alone with an induction kit and decat exhaust system.