z32 AFM

[ookami]

I've seen a car with a maxed out AFM and they get a tune and the air flow meter was working oerfectly with more boost and more power before ... how does this work? Is it tune dependant somehow? How can some people make 360+rwkw on a Z32 yet other say their only rated for just over 250 rwkw?

[Cubes]

You can fiddle with the afm voltage vs airflow a little when running a pfc.

It comes down to having a tuner that knows what he's doing.

[ookami]

Mercury Motrsport still run AFM on their S15 with a GT35R, and theirs isn't maxing out ... it just seems strange that a near stock Ser II R33 will max out on 10 psi boost with a stock turbo and stock AFM .... Z32 aren't that much better. I know their better but not by that much.

Edited August 21, 2005 by ookami

[GeeTR]

I was going to start a thread, but this seems close enough =)

AFM1 on my 32GTR looses half its voltage compared to AFM2, then clicks back to normal. I reckon if I’m going to replace one, I should upgrade both.

I have a couple channels of thought here,

1] Does the Z32 flow a worth while more then the stock ones? I can get replacements for 180 each, and Z32’s for 300 each; can anyone with experience tell me when ( ie, mods boost, RWKW) does a RB26 run them out of useful resolution?

2] The above is second hand, and don’t you HATE spending money on sh1te that breaks. So I have been looking at new prices *gulp* for Z32’s from Nissan and the Nismo branded AFM’s

greenline.jp quote

“One air flow meter. Twin NISMO AFM setup: 2400kg/h (Approx. 775ps). Twin standard AFM setup: 1400kg/h (450ps). Requires ECU retune.”

Nismo say 775ps ( (775/1.34=578kw) x .70=405rwkw), SydneyKid (511rwkw) and then R31Nismoid 369rwkw on a SINGLE.

I assume The 369rwkw could have been from PFC AFM reference voltage and fuel map tweaking, with SK’s 511 seems more likely, but my question is, when do people hit their Z32’s, Nismo’s or stock 26/25’s voltage limit? RWKW would be helpful too.

Any help would be massively appreciated!!!

- RKaida

[GeeTR]

anyone? surely

[hungry6]

To my understanding "supposedly" when you run out of resolution on twin z32, you'll need parachute to stop your car, but I have ran them out of resolution and I probably can do the fred flintstone thing to stop my car. Since then, I have the individual intake pipe velocity tested, and it was found that one tract was more efficient than the other, this is what is causing the anomalies in my AFM resolution.

So answering your question geeTR, you'll have to wait till I get new tracts made up and retune to precisely answer your question, other than that' I'm just about over the power fc and going full autronic. LOL