CantZme Posted December 31, 2007 Share Posted December 31, 2007 Hello, I just picked up a 78' 280z and I have reading up on the AFM adjustment of spring tension to adjust flap resistance. From what I understand, this adjustment will not increase or decrease fuel, but only adjust the resistance of the flap to air being induced? please correct me if I am wrong as I am trying to understand what these adjustments will do for me. I would like to possibly tune for performance gains; however, though my searching I have not found a solid answer. Has anyone done AFM adjustments on a stock 280z(n42/p79) and what kind of gains were seen on what sort of AFM adjustment(how many teeth tighter)? Any help is appreciated, and please no "search" responses, because I have searched and not found a solid answer. Thanks. Quote Link to comment Share on other sites More sharing options...
m4xwellmurd3r Posted December 31, 2007 Share Posted December 31, 2007 that flap has a potentiometer of sorts built into it, so depending on what angle the flap is at, it tells teh ecu how much fuel to give the car. if the spring is too loose, the car runs rich, to tight, the car runs lean. but if it's not broken, don't touch it. Quote Link to comment Share on other sites More sharing options...
CantZme Posted December 31, 2007 Author Share Posted December 31, 2007 I have seen this done for performance purposes, any insight on this? Quote Link to comment Share on other sites More sharing options...
stagefumer11 Posted December 31, 2007 Share Posted December 31, 2007 Its trial and error. Ive had great success with it on my Skyline Quote Link to comment Share on other sites More sharing options...
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