Recalibrating Std Gtr Airflow Meters?

[Gtrgodzilla67]

http://cgi.ebay.com.au/Nismo-Mines-RB26-GT...=item1c0dd6bb25

he claims he can recalibrate your std afms to nismo spec. worth it if it works as its a heaps cheaper option!!!!

[R31Nismoid]

It's always been possible.

Problem is, the AFM is still 10+ years old in most instances.

So you are better off buying new ones in pretty much every situtation.

[MrStabby]

I paid $500 for a single AFM rebuild for my v8 porka - but that included a new hotwire as well. AFAIK it was as good as new because the hotwire and the PCB is pretty much all there is to an AFM. The ebay guy is probably just soldering in a new PCB.

[R31Nismoid]

Nah, they are recalibrating it. Not a new PCB.

Hence it's still an old AFM. Same hotwire, same PCB. Just some resistance alterations IIRC.

[T04GTR]

just get a map sensor based ecu and solve all your problems in one hit..

[aphid]

It's a relatively straight forward process, I f**ked around and achieved a similar thing with an rb25 afm a few years ago. I think the key is in throwing it on a flow bench of some kind afterward so you can get a voltage vs airflow readout that is accurate and specific for the unit because as Nismoid says; as it's aged over the years the voltage it is putting out in relation to the amount of air that's flowing through it has most certainly changed and it's accuracy will be defiantly questionable