R32 Gtr Boost..

[snsdrifter]

i bought my R32 GTR and have had nothing but problems , not to mention this is my 1st skyline .. i change my AFM's because both of them were bad , now i have the power.

My question is when i get on it i get up to o'say 5000rpms and it feels like im not boosting anymore like A) i have a boost leak or B) i have stuck BOV's... whays my problem and is this a commen problem... i just want to feel what my gtr is suppose to feel like .. i have owned it for 3 months now and b4 the AFM change it felt like my gtr only had 100 hp, can anyone help me ?

[Moodles2]

Could be anything, boost leak, no ceramic wheel left on your turbos, bad coils, air leaks from the intercooler rubber hoses arent uncommon, blown intake manifold/throttle body gasket, dirty air filters.

First thing I would suggest, find the R32 GTR service manual pdf on the net (24mb~) and look up the section to put it into self diagnostic mode (shorting acouple pins on the diagnostic port) so you can find any error codes and work from there.

[snsdrifter]

Could be anything, boost leak, no ceramic wheel left on your turbos, bad coils, air leaks from the intercooler rubber hoses arent uncommon, blown intake manifold/throttle body gasket, dirty air filters.

First thing I would suggest, find the R32 GTR service manual pdf on the net (24mb~) and look up the section to put it into self diagnostic mode (shorting acouple pins on the diagnostic port) so you can find any error codes and work from there.

ya i took it to nissan they said both AFM's were bad so i changed them out and that gave more power , big difference. they also found a few noticeable air leaks that i missed but didnt go any further. the only code that popped up was bad AFM's.. if my ceramic wheels blew wouldt i have much more noticeable issue's i dont even think i would boost right.

my car spools just fine, it doesnt hold boost like it vents somwhere.. i just spent $80 on pvc pipe, adjustable valve and an air hose to make a boost leak tester, about 5 min ago. i just want a second opinion.. also what do i adjsut my valve to when i test my pipeing .. the valve goes to 0 - 1 mpa , i dont want to force more that stock boost threw my pipeing.. thanks

[im late]

my car spools just fine, it doesnt hold boost like it vents somwhere..

Have you checked the BOV operation? Are they leaking under boost? Also have you checked there are no hairline cracks in any of the turbo hoses or BOV hoses?

Shoot me a PM if you want the workshop manual.

[snsdrifter]

well i changed my fuel injectors out because nissan said it was running rich, that fixed part of my power issue, now it seems my timing is off 5 degrees its at 25 instead of 20 and h have maxed out my CAS clock wise trying to get it to 20 degrees. is this off far enough to cause my power loss at high rpm? if so, do i need to pull the motor to change out the timineg belt ? what is the time im looking at to fix this myself ?