I found another maf application for the ca.

[Chris859]

It just so happens that the fwd 95-98 sr20de maf plugs right in, and works on the ca, which means the g20 mafs should work as well. I found this out in reverse, one of my friends with a '95 200sx se-r was running my ca18 maf for about a week on his sr20de, it ran a tiny bit rich, but ran fine none the less. So just an FYI - in a pinch you could get by with one!

[aruek_ca18det]

if the SR20 run rich with the CA AFM then there is a chance for the CA run lean with the SR20 AFM isn't it?

I tried myself a SR20DE AFM on my CA18DET and it runs ok idling, up to 3300rpm when boost kicks in the cars stumble a litle bit then recovers but the power felt diferent... not sure if it was running lean but ... did you tried SR20DE into ur CA18?

Sure we are talking about CA and SR without O2 sensor right?

[Chris859]

I tried it on my car, with o2 sensor connected. My car normally runs rich anyways... It would be nice if I had a wideband, then I could verify the rich/lean part... But for the most part, the sr20de maf might run a little leaner on the ca. If you have an adjustable fuel pressure reg, you can bump the fuel pressure up a bit to compensate if it is required.