Brand New Z32 Afm Problem

[Birnie]

My new Tomei (Nissan) Z32 was delivered today

The mesh looks better

The sticker looks marginally better, and slighly different design.

There is definatley no mention of 'Nissan' imprinted in the plastic.

From memory, the sensor looks to be a diferrent colour?? (maybe wrong there)

The top plastic cover plate looks to be a bit dogey though, although if all the interior bits are OK, it won't make a difference.

Here's some pics....

[benl1981]

hope you have better luck with this one Birnie

Cubes - are you making around 180rwkw? I see you reckon you get about 4.3v max on the Z32.

I'm getting 4.33v max on 10psi high flow whereas on R33 AFM I was at 5.1v

Cheers

[Cubes]

Ben,

Yep I'm around the same volts as you and suspect same power; all though I never did dyno it once it was running properly. I went to give it a power run and it was pumping the lifters; that was sorted and never threw it on the dyno again.

But yes ~4.3v and it made 180rwkw then valve floated and power dropped.

The stock afm was max'd out, dropped the z32 in and was around 4.3v as you are. Stock 270cc injectors were maxed out also.

Same boost levels too but with vg30det turbo. The heads had a little work, usual port/polish, multiangle valve jobs & valve deshroud.

There's quite a big difference in airflow from 4.3v to 4.7-4.8v. Another mate was maxing his std afm out at ~180rwkw, dropped the z32 in retuned and did 4.7v at 270rwkw.

Won't be long before I'm pushing the boost up with the gt30; should get my rb26 pfc and fit it up this week.

[benl1981]

Nice to know cubes. Should go well once you tune it up and get the gt30 going!

Ive got to put my 450cc S15 injectors in then I'm heading for a tune also. I suspected that the difference between 4.3v and over 4.8v would be pretty huge.

I'll be happy with about 230-240rwkw.

Hopefully I will get the flow reversion thing sorted.

[RB30-POWER]

See a peak of around 4.3V on my brothers RB30DET with VG30 AFM at 6psi w/VG30 turbo. Expect around 180-200rwkw, so the above figures sound alright to me.

[Birnie]

OK peeps,

Finally swapped AFM and had a tune

It works ! Yeah !

Just swicthing the AFM bfore goijng on the dyno and the car is started and hiccupping and splutterring and telling me "PLease Birnie, i need a tune now" which is the result i was after/expecting going from a dodge AFM/tune to a good AFM.

All tuned and it hit cell 16 down the vertical on about 17psi ( i think that was about 4400 on the volts reading)

Before with the exact same setup with dodge-AFM it hit cell 20 on 13psi.

So as far as I'm concerned, the dodge ones ARE out there.

I don't actually know but i still suspect a bad batch going around rather than some dodgey chinese peeps trying to rip people off.

So yeah, if you happen to get a dud, check fr leaks first cause i had some shockers, but other than that, take itback and ask for it to be checked or replaced.

The worst part is you lose your tuning money which really sucks cause that's the most expensive part!

Luckily i had the 1st tune done on the road with a bud so i was only out of pocket $200

So there you go, I'm sorted.

[mad082]

i tested out my mates rb25 afm the other night. at 13psi with a 3076 it was reaching 4.9v and that was only about 270hp. we are going to remove it anyway so that isn't a big issue, but first we need to sort out a few issues we have, such as the intake pipe sucking shut, and an overly restrictive intercooler.