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stock AFM -> Z32 AFM

MRK25T

By MRK25T,
in Engines & Forced Induction

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MRK25T Experienced

MRK25T

Posted
Posted

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

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Roy Grand Master

Roy

Posted
Posted

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.

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Grim Proficient

Grim

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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?

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Grim Proficient

Grim

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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? :)

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MRK25T Experienced

MRK25T

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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

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Grim Proficient

Grim

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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!!

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MRK25T Experienced

MRK25T

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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

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Guest INASNT

Guest INASNT

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  Quote
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!!

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