Changing Afm 80mm To 65mm For A Gtr

[cefiro]

I am wondering if its possible to put two RB20/RB25 AFM into GTR by opening them up and remove the element and electronics and replace them into GTR ones???

[Beer Baron]

yes it's possible. but you need to be aware that a sensor that is designed and calibrated to work in an 80mm tube will behave differently in a 65mm tube. ie it will 'read' a different airflow at the same voltage.

this is similar to nismo afms. they are a Z32 sensor in a GTR body, but they are recalibrated to suit.

[James_03]

yeah this won't work. either run the rb20/25 afm's as 80mm or go z32 or nismo. I went and bought another 2 pods to suit the 80mm afm's on myn, then just had an exhaust shop do up a couple of 80mm-65mm reducers. All up including new filters, afm's, converters cost me $212.

[Adriano]

If i recall correctly, rb25 80mm and gtr 65mm afm's use almost the same electrics, its the bigger pipe sixe that makes the difference in resolution, so fitting rb25 afm's into gtr housings wont achieve anything.

[cefiro]

Fair call, just thought i would ask as i have been throwing this up for a while.

Yeah will just get RB20/25 AFM and a reducer to modify the existing piping.