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How To Wire Up Rb25 S2 Afms To 33 Gtr ?

stevenified
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Bunta Grand Master

Bunta

Posted
Posted
kinda o/t but why are you doing that? do the normal 25 AFM's offer more scope than the GTR ones?

they are 80mm instead of 65mm and are good for about 250rwkw of airflow each so they are a decent upgrade

James_03 Mentor

James_03

Posted
Posted (edited)

This should help you out mate. I found this on the net ages ago, I just did a minor edit to it in ms paint just then and added the rb26dett pinouts which I verified against the service manual, I thought that would come in handy on here so I added it. They are indentical to the rb20det silvertop pinouts as you can see. So all you need to do is compare the late model ECR33 diagram against the rb26 and change the plug accordingly. R33 S2 AFM's are pink label 3 pin outs, R33 S1 are green label 4 pin outs.

What I did with my R33 S2 AFM's was I took the top off them, un-soldered and removed the plug, then did the same with the GTR afm's. What you can then do is carefully trim back the terminals inside the R33 AFM's then screw in the GTR plug, then wire it accordingly inside using short wire and solder it. Then seal them back up again.

Its alot of effort to go to, but it means you don't have to cut the standard loom just plug and play.

Or just cut the loom lol.

post-13028-1215779610_thumb.jpg

Edited by James_03
stevenified Collaborator

stevenified

Posted
  • Author
Posted

thanks for the reply and info guys.

What i have noticed though is that each AFM has different amounts of pins/wires. One has 4 and matches the diagrams, but the other has 5 - am i going to assume this is also ground?

Cheers!!

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