Need Help Plz R33 Ser Ii.

[adis]

Hey guys, i had enough of my car and need your help please...pleasee!

(sorry for starting a new thread but i had to, my car pissed me off so much last night)

:(

I bought a Skyline gts-t r33 ser II about 3 months ago and am not that familiar with turbo cars so i thought id ask some of you guys that have had one for a while, so all help is really aappreciated.

Mods on it:

Cat back exaust-(getting rest delivered soon i hope, waiting)

K&N Filter

Tubotech manual boost controller set to 11psi

Apexi cooler

story is: i used to have problems with misfiring until i gapped my plugs to .65mm. The car did start to run better but at times, like last night, car would misfire, cut out totally as if ive briefly let go of accelerator all together and have flat spots all over. car would hit full boost straight away but wouldnt pull, and i would feel it pull propely from maybe 4000 to 4500rpm, and it would go flat again and pull hard around 6500 to 7000rpm.

I dont want to waste money on unnecessary mods but whatever i need to buy i will. Im not going for huge power just decent.

Problem? Im not sure what i should upgrade (apart from front+dump pipe) that could help me overcome this problem. Most of the times when im by my self, car runs not too bad, but with a bit of load, forget it.

Solution-Can you guys suggest what you think could be and what would be the best was to fix it and also what upgrades i need.

Please only reply if you want to help. Really appreciated.

Edited March 8, 2009 by adis

[R31Nismoid]

Plugs @ .65 = coil packs.

For your mods you should be able to run 1.0 on the plugs without a problem.

Also sounds like the stock ECU having a fit.

Back the boost off to 9psi (once you fix the coil packs) and i bet all problems go away

standard stuff really

[adis]

Okay, ill bring the boost back down to 9 and ill order first set of split fires i see for decent price.

What else could i upgrade that i will notice difference. Ie. fuel pump? Thanks for your time.

[R31Nismoid]

Well no-one can tell over the net what else is wrong

you really need to go see someone with some knowledge dude and get them to look over the car, i think it has a number of issues

[adis]

UPDATE: Okay ran the car on 11psi and it seemed fine again. So my biggest issues come when i have load in the car-2 mates. Happend before and last night it happend again. Im going mechanics wednesday but i want to get some more mods suggestions, much apreciated.

[jeffworld2]

your ecu is shitting itself. honestly, if you back it off to 9psi as suggested it will probably go faster and better.

then go from there to work out what you wanna do

[R31Nismoid]

you dont need mods - you need to fix the problems first.

[adis]

do u think "mines ecu" would fix that ? along with split fire coil pack?

[89CAL]

back it off to 7psi even to where the ecu's range is. I'd reccomend getting somthing that u can tune/get tuned, even if u get an apexi afc/safc, power fc, nistune. something like that

mine was weird before i got my power fc. Upped the boost to 12psi and it hit 4500 and just stuttered, threw spitfires at it with .8mm plugs, still did it. Backed the boost off to abot 8 and it went fine

id say itll be ecu related.... but may just be ur coilpacks

[adis]

okay ill def get splitifires and ill keep an eye on something like apexi afc/safc