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Rb25det Afm S1 And 2

kurd_boi

By kurd_boi,
in Engines & Forced Induction

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TTT Grand Master

TTT

Posted
Posted

because most R33's with RB25 engines are running near max voltage after 200rwkw.

at 220 that you want, they will be past their resolution.

and series 1 to series 2 AFM are slightly different. but still max out at the same level.

you are changing the afm. might as well start with the right one instead of having to change it again in the future.

dezz Grand Master

dezz

Posted
Posted
because most R33's with RB25 engines are running near max voltage after 200rwkw.

at 220 that you want, they will be past their resolution.

and series 1 to series 2 AFM are slightly different. but still max out at the same level.

you are changing the afm. might as well start with the right one instead of having to change it again in the future.

my car is making ~250rwkw on the stock afm :(

  • 3 weeks later...
TTT Grand Master

TTT

Posted
Posted
my car is making ~250rwkw on the stock afm :(

that's why I said most.

and did you tune it?

did you see it being tuned?

do you have a PFC hand controller where you can see the AFM voltage?

is it not hitting max (4.8 or whatever it is) way before redline?

You can tune the car still once it has passed max voltage..

but it's not as accurate.

which kinda defeats the purpose of having an AFM equipt car..

and it is kinda in the zone where you would want to place the most emphasis on getting the tune right.

  • 3 weeks later...
  • 3 weeks later...
James_03 Mentor

James_03

Posted
Posted (edited)
from wat i have read on here the R33 s2 pins , 2 of then are for grounding ! can anyone comfirm !

No thats not correct.

The S2 pink label R33 AFM has 3 terminals. With the AFM facing towards you and the flow arrow pointing ===> they are:

pin 1: 12v from eccs relay

pin 2: Ground

pin 3: Signal

The Green label R33 S1 AFM however uses 2 grounds. The first is an ECU ground, the second is a Chassis ground. This is the same scope and dimensions as a rb20det silvertop AFM, the terminal outputs are slightly different but both 80mm.

Here is something a found on the net ages ago that I dig up when I need it:

post-13028-1208908227_thumb.jpg

Edited by James_03

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