stock AFM -> Z32 AFM

[MRK25T]

I need to upgrade my AFM so I guess I have to get a Z32 AFM.

reason: powerFC reports AFM is maxing out with the boost i'm running.

I'd like to know what parts I need... people have mentioned you can get the AFM quite easily but I need different wiring?

If anyone knows of any for sale/ or prices I should be paying for it could you let me know.

Mark

[warrick]

hikari has them for $350 used.

cheers

warrick

[Guest INASNT]

u need the z32 afm and the plug then u can splice the wires in quite easily to the stock wiring, then add the z32 to the pfc and u will be right.

[Roy]

I understand that your AFM may be maxing out, but your car can still be tuned correctly using the std AFM.

Doesnt the Power Fc make an allowance by way of a fudge factor, a constant that allows the ECU to interpolate values beyond the factory AFM range.

I dont think by adding a Z32 AFM you will reap more power, just makes the tuning easier, so has to be weighed up whether it is worth the expense.

If it were impossible to tune correctly with the factory AFM i would understand all the fuss, but i dont think this is the case.

[Guest INASNT]

yes u will get greater tuneability coz the comp wont be seing 5v with the stock afm at 5000rpm

[MRK25T]

It will also get rid of the engine check light flashing... I only want to see it flashing if there is something wrong.

Mark

[Ronin 09]

not on the topic, but nice new carbon fibre bonnet on your car!

[Grim]

hey Mark unless you spend a LOT of time at the top end of the stock AFM range (ie track use) and therefore the tunability at that level will be useful, then why not do what I did and just turn off the warning light for the AFM maxout?

[BOOSTD]

My A/F meter maxes out from 10psi onward, so if I have it tuned for 17psi and flick back to 10psi it is ultra rich cause its still reading from the same map points. I can justify a new AFM for this reason.

[Grim]

yep for sure...that is a good reason to justify it. I find my AFM max's out at 5000rpm on 1 bar, 6000rpm on 0.8bar so therefore I don't spend much time above these rev ranges and therefore cant justify an AFM.

But at your 17psi I imagine the stock AFM would max out at 5V at around 4000rpm?

[MRK25T]

Sometimes mine maxes out just going up a steepish hill at about 4 grand.

I've got plans to get my car tuned for boost over 1bar so thats why i'd like it.

by the way, why arn't you at work grim?

Mark

[Grim]

Does the power FC have a set fuel map regardless of boost pressure or is it dynamic like the stock ECU? Can someone explain to me the relationship between fuel usage and air intake and boost level in regards to the way the powerFC is tuned for each?

Hey Mark....I start at 2pm mate so I've got every morning free. You at work now I take it....wasting company time on the internet?

[MRK25T]

Yep im working now. I'll be finished at 5:30pm while you'll be just warming up.

You have 200rwkw? I only have 252rwhp which is somewhere near 190rwkw. What have you got on that new car again, and did you get it tuned recently after putting it on the dyno the day I got my bonnet?

Mark

[Grim]

I haven't had it tuned since that day it was missing badly on the dyno at UAS. I took out the wrongly gapped iridium plugs the previous owner had in and I put in some cheap coppers gapped correctly. It now pulls nicely up to 7000rpm with no missing as my quick lap times at Wakefield showed

So I don't have an exact figure....it's probably about 190-195rwkw at 1 bar. Gotta get it tuned properly soon as I get some money together because it's running so rich I only get 15-16L/100km!!

[MRK25T]

I'm averaging (from memory) about 13L/100km. I've been keeping a database of my fuel consumption since I started to mod my car (begining of this year) but that database is at home.

I've sent off a few emails to people who can possibly get me a Z32 AFM so i'm waiting to hear the prices. Nick was telling me on the weekend that I need to get the Z32 plus the plug because the one on the skyline doesnt fit.

I got quoted $850 for a brand new Z32 from Col Crawford dealership so there is no way i'm going for a new one.

Mark

[Grim]

How many mV does the z32 afm go up to?

[BOOSTD]

5.115v same as the RB just takes more air to get there.

[Guest INASNT]

Originally posted by MRK25T

I'm averaging (from memory) about 13L/100km. I've been keeping a database of my fuel consumption since I started to mod my car (begining of this year) but that database is at home.

I've sent off a few emails to people who can possibly get me a Z32 AFM so i'm waiting to hear the prices. Nick was telling me on the weekend that I need to get the Z32 plus the plug because the one on the skyline doesnt fit.

I got quoted $850 for a brand new Z32 from Col Crawford dealership so there is no way i'm going for a new one.

Mark

pfft $850?? U can get 1 through the forums here or from jap importers for around $350!!

[MRK25T]

Brand new for $850?

Ones i've seen are second hand

[Guest INASNT]

*** new, second hand is good enough. They dont make z32's 300zx's anymore so i dont know how u would get a new 1