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z32 AFM questions..pls. help.

nismo33

By nismo33,
in General Automotive Discussion

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nismo33 Proficient

nismo33

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Ok...i dont know much about mods just yet,.i have had my line for about 4 months now and am loving every bit of it..i am now onto modding my car.

i have done my research before posting this up,.and had no luck.

my question is.

What does Z32 AFM really do ? i mean,..what are they ? is it really neccessary to upgrade your normal R33 AFM to a Z32 AFM ?

and lets say i am aiming for 250rwkw,.do i need to change to Z32 ? any power gains from it ?

thanks for the help guys...appreciate it.

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https://www.sau.com.au/forums/topic/56659-z32-afm-questionspls-help/
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knore Grand Master

knore

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im not exacly sure at what rwkw level the rb25 AFM runs out, but mine is pretty close now and im on 180rwkw

If you max out the rb25 AFM you wont make any power past that, so you need a larger AFM such as the Z32

You shouldnt really need one unless your changing turbo

2BNVS Veteran

2BNVS

Posted
Posted

i dont know how to word it properley coz its only what i was told but it has somethin to do with the voltage the z32's read or something, which allows the ecu to read that there is a change in air goin in to, sorry if u still dont understand, im in the same league just "tryin" to explain what i was told...

if anyone else could give a more detailed explanation than me lol it would help

cheerss...ben.

nismo33 Proficient

nismo33

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I did my search once again finding what Z32 does..but no luck...i have read a few threads of people having this AFM on their car which mostly has changed their turbo setup.

is it really neccessary to upgrade even if you're using aftermarket ECU like the FC ?

i dont wanna be one of those who put stuff in their engine and don't know what it does.

so anyone knows ?

fresh Rising Star

fresh

Posted
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i could be completely wrong here, but my understanding is the Z32 AFM allows a wider and of air flow to be measured, say for example sake, the r33 AFM reads 1V when 1 cfm/s of air is flowing thru and 5V when 5 cfm/s of air is flowing thru, then the z32 AFM may read 1V when 2 cfm/s of air isflwoing thru and 5V when 10 cfm/s of air is flowing thru

this could be completely wrong and the numbers aren't real just for exmples sake, but thats my understanding of it, this means to ur case

that the ecu can see the extra air coming thru and compensate for it, because when u max out an AFM the ecu won't add any more fuel, or will it ???

drunkenmaster Community Regular

drunkenmaster

Posted
Posted
If you max out the rb25 AFM you wont make any power past that, so you need a larger AFM such as the Z32

Not larger, just greater resolution.

Only required for big power when you max out your AFM and your EFI system can no longer accurately tell how much air is entering the motor.

Not really to do with power, rather A/F ratio

knore Grand Master

knore

Posted
Posted
Not larger, just greater resolution.

Only required for big power when you max out your AFM and your EFI system can no longer accurately tell how much air is entering the motor.

Not really to do with power, rather A/F ratio

yes thats what i meant, i didnt mean bigger as in size

And most of whats said is correct, the Z32 has a larger scale of tuning so to speak

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