Having Problems With My R32 Gtr

[Tyranus]

Having troubles with my gtr, here are the symptoms:

Power: 320awkw

-When under load in 1st and 2nd gear it feels normal (fast) but i put it into 3rd it feels "slow"

-Then it decides to be slow in 1st and 2nd then fast in 3rd

-Literally 5 seconds later i boot it again to see any difference, it decides to be fast or slow in random gears

-The car has a f**ked clutch booster, its making the squeeky sound and is leaking air, could this contribute to the problem?

-I have checked my hand controller, at idle afm 1 is sitting at 0.1 and afm 2 is on 0.15 volts (actual numbers are afm1 89-94 afm2 1.06-8

-Under light load in neutral it gets closer to 0.2 difference and when i back off it goes to 0.27 difference

-Abd drops alot faster than afm 2, is that too much of an variable for those afms?

-The afm's are Z32

It sounds like a afm problem but i could be wrong.

Edited October 19, 2010 by Sedat

[DVS JEZ]

very possible its the afms, can you get another to borrow and try

[T04GTR]

silly question, but have you earthed the fuel pump? takes 5 mins to do and eliminates so anoying and potentialy destructive problems

[Tyranus]

Just tested the car underload and the results were

AFM 1: 4.19 volts

AFM 2: 3.88 - 3.98 volts

at idle

AFM 1: 0.91

AFM 2: 1.08

Is it normal for AFM 1 to be lower at idle and higher under load? And is that an acceptable variance?

The car has been running perfect today, no loss of power at all so i am stumped as to what the problem is. Any help would be appreciated and if this is in the wrong section can it be moved please

silly question, but have you earthed the fuel pump? takes 5 mins to do and eliminates so anoying and potentialy destructive problems

Not sure, car was bought as is besides the tune i had done to it a month or so ago. Have had the car for a year and a half and this is the first time it has done something like this

[Moodles2]

Switch the AFMs, if it still happens you might have 1 turbo that's doing more work than the other. Or perhaps a boost/inlet leak somewhere between the turbo and AFM #2

[SKYGTRONE]

My friend had kind of the same problem and it was the Z32 AFMs it was pretty strange but we changed them, It can also be the turbos take a closer look at them.

If it works post a result

[R31Nismoid]

Looks like AFM:1 is playing up. Exactly what mine did (twice)

[Tyranus]

thanks for replies guys ill look further into it