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Standard Afm Or Z32?

Aaron BNR32 GTS-T
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Aaron BNR32 GTS-T Collaborator

Aaron BNR32 GTS-T

Posted
Posted (edited)

i have a few questions,

i had my car (r32 rb20) with the same mods minus the Z32 and NISTUNE ecu

and it seemed to hammer!

i have since had it installed but i had miss fires etc so wasnt a full tune

but seems not to go as hard as it did before...

so i was wondering if i should stay with the standard AFM with the NISTUNE

and achive a better overall result with the mods i have or i need to go the Z32

mods are

ARC air induction box

ARC side mount intercooler

NISTUNE ecu

3" stainless dump

highflow cat

3.25" cat back

RB25 series 1 turbo running 12 to 13psi

APEXI AVCR boost controler

new timing belt and adjustable cam gears (installed after nistune was installed and on starndard settings)

.... thats all i can think of atm but i will be putting in new coil packs too

if someone could shed some light that be much appreciated

cheers

Edited by Aaron BNR32 GTS-T
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Hanaldo Grand Master

Hanaldo

Posted
Posted

i have a few questions,

i had my car (r32 rb20) with the same mods minus the Z32 and NISTUNE ecu

and it seemed to hammer!

i have since had it installed but i had miss fires etc so wasnt a full tune

but seems not to go as hard as it did before...

so i was wondering if i should stay with the standard AFM with the NISTUNE

and achive a better overall result with the mods i have or i need to go the Z32

mods are

ARC air induction box

ARC side mount intercooler

NISTUNE ecu

3" stainless dump

highflow cat

3.25" cat back

RB25 series 1 turbo

APEXI AVCR boost controler

new timing belt and adjustable cam gears (installed after nistune was installed and on starndard settings)

.... thats all i can think of atm but i will be putting in new coil packs too

if someone could shed some light that be much appreciated

cheers

If you're not maxing out the standard AFM, there is no need to upgrade.

Hanaldo Grand Master

Hanaldo

Posted
Posted (edited)

So you've plugged in the NISTUNE ECU & Z32 - without a tune?

Mmm just re-read his post. I thought he had installed the NIStune and was wondering if he needed to get a Z32 to replace the standard AFM.

OP, how far did it get in tuning? Did your tuner adjust the k-constant to suit the new AFM?

Edited by Hanaldo
Aaron BNR32 GTS-T Collaborator

Aaron BNR32 GTS-T

Posted
  • Author
Posted (edited)

AFM won't make much difference.

Plus if it is mis-firing and wasn't properly tuned... You kinda answered your question :)

should the z32 read more air up higher but not the best off boost?

cause take off and pickup is slow (dosnt pump threw the revs as fast)

yeah wasnt tuned to its max but it only missed on high load so shouldnt

change down low?

Edited by Aaron BNR32 GTS-T
Room42 Proficient

Room42

Posted
Posted

AFM won't make much difference.

Plus if it is mis-firing and wasn't properly tuned... You kinda answered your question :)

The z32 has better resolution so may be smoother to drive. And seems to have a less restrictive 'pronger' in it. I noticed the difference in mine when I swapped it over. No extra power but smoother (especially down low) and different exhaust note. Maybe no difference for you at all. But yeah...new coils and a tune and it will surprise you. Or at least meet your expectations.

Aaron BNR32 GTS-T Collaborator

Aaron BNR32 GTS-T

Posted
  • Author
Posted (edited)

The z32 has better resolution so may be smoother to drive. And seems to have a less restrictive 'pronger' in it. I noticed the difference in mine when I swapped it over. No extra power but smoother (especially down low) and different exhaust note. Maybe no difference for you at all. But yeah...new coils and a tune and it will surprise you. Or at least meet your expectations.

yeah well maby it just the tune and failing coil packs

i will get new ones and get a proper tune and see how things go

hopefully all well! im not looking for mega power, just what i can get

out of her cause i want it reliable and fun to drive! i was hoping to get

200kwatw but im thinking it will be more like 170kw or somthing

Edited by Aaron BNR32 GTS-T
JonnoHR31 Grand Master

JonnoHR31

Posted
Posted

The z32 has better resolution so may be smoother to drive. And seems to have a less restrictive 'pronger' in it. I noticed the difference in mine when I swapped it over. No extra power but smoother (especially down low) and different exhaust note. Maybe no difference for you at all. But yeah...new coils and a tune and it will surprise you. Or at least meet your expectations.

z32 is less accurate than a rb25 afm under light loads

but its still more than accurate enough to have the car driving like standard. if your keeping the standard turbo you've wasted your money on the afm, go back to standard and sell it. if you plan on upgrading later then keep it and ask your tuner to sort out the problems your having.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

The z32 has better resolution so may be smoother to drive. And seems to have a less restrictive 'pronger' in it. I noticed the difference in mine when I swapped it over. No extra power but smoother (especially down low) and different exhaust note. Maybe no difference for you at all. But yeah...new coils and a tune and it will surprise you. Or at least meet your expectations.

Only past the point where the 25 one is limited.

The 25 one, as stated, will see better @ lower airflow. Hence a Z32 can read higher airflow.

Just about AFM calibration.

Room42 Proficient

Room42

Posted
Posted

Only past the point where the 25 one is limited.

The 25 one, as stated, will see better @ lower airflow. Hence a Z32 can read higher airflow.

Just about AFM calibration.

I must have been imagining it then. Maybe there was a small change in the fuel map when I swapped the afm settings over in the pfc. Or maybe the lower light load res made it smoother. I have no idea. :blink:

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