Afm Question

[TurboDoseBro]

Hey guys, i am currently finishing up on a R33 RB25DE conversion on my R32 GTS-T. The only part missing now is the AFM, i've heard that people with moderate modifications use the Z32 AFM, so what does a normal, stock R33 RB25DE use? Can i get this from a wrecker or do i have to buy it new? Thanks. My uncle who is helping me with the conversion says that the R32 RB20DET airbox and AFM is different to the R33 one.

[mad082]

you won't get the z32 ecu to work properly without a piggyback computer of some sort (or full ecu) to change the settings. the z32 is the same size as the rb20 and rb25 afms and works between the same voltages but reads different voltages at different airflow rates to the stock afm.

you can use the rb20 afm on a series 1 rb25, but to use it on a series 2 you need to play around with the wiring (not very hard, think it is only 1 wire different)

[TurboDoseBro]

Ahhh thanks. Hmmm, i'm using the R33 ECU and hopefully trying to match it with the correct AFM. So i guess the R33 AFM is the only way out...

[mad082]

you didn't really read what i said did you? there are 2 different types of r33 afm. if the rb25 came out of a series 1 r33 then you can use the rb20 one as it is the same. if the r33 was a series 2 then you will need to make sure you get a series 2 afm, or you can change the wiring to get the s1/rb20 one to fit.

[TurboDoseBro]

Loud n clear now. Thank god you're on this forum...