I HAVE AN 1987 MAZDA RX7? CAN I PUT AN 1990 AIR FLOW METER ON AND IS THERE ANY WEB SITES THAT CAN HELP? THANK'S

 

no

 

Nope, they are not compatable.

 

It's been done before. This link will help you. Keep in mind you probably aren't going to get any additional power from it. I know someone is bound to say that the S4 afm flows more than the S5 but this is wrong. I've flowtested them. It doesn't mean it's a useful mod though.

http://www.nopistons.com/forums/inde...showtopic=3067