jeremykedel

iTrader: (2)

Whats the deal with a z32 maf?Will it work on my 2000 max? What does it do? I am just curious, would it be beneficial for me?

Tatanko

iTrader: (34)

That MAF is used for boosted Maximas that are beyond the limits of what their stock MAF can read. There are no "gains" with it, just increased ability.

jeremykedel

iTrader: (2)

So can i use it with mine when i upgrade and go to 12 psi?

Tatanko

iTrader: (34)

Depends. You're currently turbo'd? Have you taken readings from your MAF lately?

Stephen Max

iTrader: (59)

To do it right, you have to have an ecu that is programmed for the Z32 maf air flow vs voltage curve. 4th gens can use a 95-96 ecu reprogrammed for the Z32 maf by JWT. I don't think any such option exists for the 5th gen.

Tatanko

iTrader: (34)

Oops, forgot to mention that. But then again I'm not exactly an expert on Z32 MAF's

slimer

iTrader: (13)

Stephen, then how do you explain my, kirk's and mike's tuning with the a32 ecu? Aren't you the one that discovered that?

The z32 maf voltage paired with z32 injectors has a stoich idle and a fairly close tune up to 7 psi on a supercharger. I use a 4:1 disc to bump fuel pressure at 8 psi. When I upgrade pullies, I will see what happens and what corrections will be needed.

I30tMikeD

iTrader: (8)

he said to do it right, and I would agree. It is a hack way to doing it but the results are decent. One thing is the AFR's. Look at my dyno, my AFR's doesn't go lower as boost comes on they just jump right down to 10:1 even at 1500 rpms. It will keep a stoich idle but while cruising and certain throttle positions it can go very rich. I do get significantly worse gas mileage with the stock ECU as well.

Stephen Max

iTrader: (59)

My experience with using the Z32 maf and injectors with A32 ecu was that even though I could get stoich afr during closed loop, and I could use the SAFC to get a reasonably good afr during boosting, it wasn't really any better than using a boost referenced fmu (except that fuel pressure was lower).

JeffesonM

iTrader: (5)

Could you have better success with the A32 ECU/Z32 MAF/Z32 injector method if you were to use an eManage or something similar to more precisely tune the setup?

I30tMikeD

iTrader: (8)

of course, but the idea behind the A32 ECU-Z32 MAF-larger injectors was a inexpensive and easy fuel management system. To run and tune e-manage correctly can cost $400 easy and you need a laptop.

JeffesonM

iTrader: (5)

Gotcha... I was more thinking along the lines of a viable JWT alternative.

slimer

iTrader: (13)

I agree that the results are decent, thats why I am considering just keeping my setup as is. I don't think that I have ever seen below a 10.5 AFR while cruising, unless going into boost and letting off the throttle.

Wierd. My gas mileage is about the same as with stock ecu/maf/injectors as with the a32 ecu/z maf/deatschwerks injectors. The only time that my gas mileage really suffered was when I had to swap in the a32 maf when my z maf fried. That created a very rich AFR throughout everything.

Understandable, but isn't that what some people's goal is, just to decrease fuel pressure? Given the problems of late with some of JWT's tunes, I would think that more people would be turning to the hacked maf solution or emanage blue. Haven't the guys running SMT not had full success with it? The emanage ultimate has its bugs. I just think that this path seems to give a pretty good tuning option until some of the other solutions are revised.

Back to the Jeremy's question: I don't think that this solution has been tried on the 5th gen. Did pimp juice use it on his 5.5 turbo setup? Nissan changed MAF's for the dek motor, didn't they? Would that majorly affect the difference between the voltage curves?