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Do I Need To Run Z32 Afm?

ryanelmi

By ryanelmi,
in Engines & Forced Induction

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paulr33 Grand Master

paulr33

Posted
Posted

z32s are 80mm and GTR afm's are 65mm

so they are larger and can physically measure more airflow

there is zero gain to fitting z32s other than being able to run more air through them

ie if your at 300awkw you wont gain power going to twin z32s

it will cost you a bomb however doing it

for GTR keep the 65mm shell and go for twin nismo afm's

these are 65mms and direct swap and it's a Z32 sensor inside the shell

so you get higher resolution in same shell and direct swap

paulr33 Grand Master

paulr33

Posted
Posted

yeah there is a changeover point where you peak 5v on the stock GTR afms and need to upgrade

the problem is it's a costly exercise so a lot of tuners have been able to strech the curve a bit

when you max them there is no harm done, it just means it cant show any more resolution

this means you dont use anymore load cells on the tune

if you max them at 6000rpm not a big deal

if you max them at 3200rpm a big deal and it ends up being a map sensor tune

when i say a map sensor tune, i mean the load axis never changes once you reach target boost

as map sensor is on pressure and boost is fixed by wastegate / boost controller

ryanelmi Contributor

ryanelmi

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Posted

The modifications to the car are -5 turbos, tomie cams, power fc ,injectors,dumps ect.. the engine has just had a fresh build with forged internals.. i just want to get it all sorted before taking it in to be tuned.. what is your opinion? do them before it gets tuned?

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