Mystery Power Drop

[RB26TTVL]

Alright, got an R33 RB26 that I've just had the turbo's rebuilt, and since then, had a suspect airflow meter. Last night I installed a new afm and revealed a new problem. Fisrt three gears are fine, revs nicely all the way through to 8000 rpm, making good power. Hit fourth and fifth and it won't pull above 5000. With the old afm I could make full revs in 4th and 5th.

Thought it may have been fuel pressure so borrowed a gauge. It made 250 kpa at idle and through to 400 - 450 at full throttle. When it hit the deadzone in fourth and fifth there was no loss of pressure?

It's confusing me, maybe someone can point out that I'm missing something simple, or just a thought or direction I might head in?

Anyone had anything similar?

[PlasticStan]

edit

Edited February 4, 2006 by PlasticStan

[CruiseLiner]

sorry for the off topic, but got any pics of the 26 in a vl? i previously had my 26 in a vl calais (purple one) a few years back and was a member on calaisturbo.com.

i had 350rwhp and traction was pathetic, spins at any speed, and hence the change to a 4wd chassis to get the power to the ground.

vl was a good slider but if i wanted to do that sort of thing

heres an old pic from about 3 years ago now.

cheers

Brad

[RB26TTVL]

sorry for the off topic, but got any pics of the 26 in a vl? i previously had my 26 in a vl calais (purple one) a few years back and was a member on calaisturbo.com.

Yeah dude, found some unfinished pics of yours while I was doin a bit of research for mine, nice to see it done in the end. You're very right about being tail happy. Mines not quite as flash as yours, but they're all a work in progress hey.

I see you're riding in a Stagea now, very nice.

Apologies for the quality of the photo's, I'm getting near to being happy with it, hopefully you'll see it out and about a bit then.