well tonight i put the z32 (300zx) MAF on the maxima.... with afc adjustments, i got it to work well. does anyone know how much hp the stock 4th gen MAF holds? this one seems to be running fine, it actually seems to pull harder with this compared to the stock 4th gen.

 

PICS??.... you know better than to post without pics.......




j/k...nice work

 

interesting ? cool

 

is this with your 3.5 with the 4th gen ecu? You might of maxed out the stock one, and this one should be good up to like 450 crank I think.

 

exactly what i was thinking

 

Stock 4th gen maf is good for 350 bhp. The Z32 maf is good for about 520-550 bhp.

 

Is that NA power or boosted? I think boosted get more due to FMU?

 

Doesn't matter. The 4th gen maf can meter up to 350 bhp worth of air flow, at which time the injectors will be running at 100% duty cycle. To get more than that (or to lower your afr if you're at less than 100% DC) you can use a boost pressure referenced fmu to supply more fuel by raising fuel pressure. But the maf still only gives a maximum 5.1V signal, no matter whether boosted or NA. Boosted people go to the Z32 maf because it is calibrated for a higher air flow and you can stay with an airflow referenced fuel metering system.

 

Is this on the 3.5 that you put the Z32 MAF?

 

Interesting stuff Tilley nice work, but a couple of ?’ so your using the 3.0 INJ right? If I'm not mistaken your pushing around 270hp to 285hp at the crank right now so how would it benefit at the moment. The 3.0 is good for metering 350bhp so your not at 100% DC yet. Z32 MAF is good for over 450+hp. But you stated that you adjusted it with the AFC are you using the Apexi unit or something else?

I assume that you tuned the stock 3.0 MAF to it's Max, so the Z32 MAF must allow you more room to adjust for more AF than the stock 4thgen can I could be wrong.
.

 

You know Rob, if you keep on doing stuff to Emily's car, your car is never gonna get running anytime soon

 

I should be dynoing sometime this week. Finally i got my A/F to show on my gauge

 

but im not complaining!!!!

 

just wait till my car is running and i take my stuff back

 

Once again...Tilley please move to Texas.


Nice work!

 

yeah move to texas. So I can take my car over there and you can install a 3.5 in my car.

 

take a vacation in the summer and come up and go to hersheypark lol... and go see the amish, and stuff lol......... but sorry there is no night life here but you could come up and be a tourist and have tilley do your car!

 

arnt 3.5 injectors 290cc? I thought voltage was based on injector size and the actual MAF?

 

C’mon we need more technical info on this.

What are you using to control the AF?

Ok so far the

Z32 MAF @ 5.1v 450-550 bhp ???

4th gen @ 5.1v 350bhp

Does the Z32 MAF plug into the existing 3.0 plug?

What year Z MAF do you recommend getting if that matters?

So is the timing calculated based off RPM and injector pulse width? with a bigger MAF will the ECU see less air then the stock ECU?
Thus this will give a lower pulse width which then decreases the advance timing rate.

If that's true then at a given cfm rate that the MAF see's with both MAF's the Z32 MAF will give out less voltage, therefore the ECU will see that and give a shorter PW so less fuel less advancing. So that will give you more room to make power and retard timing with the aid of an S-AFC or any other unit that controls AF, bigger TB bigger MAF more air more room for tuning more power to be made that's why Tilley can feel the difference when adjusting AF with the bigger MAF.

I could be wrong with all this but this is what I understand so far.

 

Sounds about right too me.

 

Ok I see some of my ?'s unanswered I get the Hint.

But for the people who want to do this here are some helpful links
How to WIRE up the Z32 MAF


http://forums.maxima.org/showthread.php?t=342180
http://forums.maxima.org/showthread.php?t=351427

 

i think he may have just missed the rest of the post... sometimes he is lazy but only on the comp lol

 

I hate reading its a waste of time.........BTW the Z32 MAF is reading 3.8v in 3rd gear.

 

z32 maf has a different plug, just there are two grounds on it and a bunch of people sell pigtails that you can wire up to your existing maf.

has anyone thought about the q45 TB? it is a lot larger to accomodate airflow.

 

tilley has one, but i think he is going to use it for one of his many projects that doesnt involve my max

 

it might be a little too large to accomodate easily
http://larrio.maximaclubca.com/proje...tb%20-%204.JPG

at 3.8v in 3rd gear, it makes it seem like there isn't much more room to go if the car is boosted. How does the voltage read in accordance with hp? (i.e. 0.1 v = x hp)

 

what about hte q45 maf? its the size of most intakes

 

check the SC forums, I have a thread in there about that.

 

I saw it. for my goals, i think the z32 is good enough for me. I want to try and get the 370's, z32 maf and a32 ecu to work together flawlessly.

 

Could be that you leaned it out to a more ideal AFR than stock? And also, with the meter changed - the ecu should provide more timing advance.

 

Tilley,in a nutshell, the z32 MAF would have leaned the car out a bit which our cars run better leaner. untill it begins to detonate

 

Question:

What was your sensor type settings with the Z32 MAF on the AFC?