CU Zcar Posted December 15, 2003 Share Posted December 15, 2003 On the stock FPR's, all they do is maintain fuel pressure 37 (or whatever) psi above manifold pressure, correct? I don't think the unit particularly cares what the difference between the manifold and local atmospheric pressures are, so it makes sense at least to me that they aren't any different between turbo and n/a applications. If I read correctly, some of you question whether the AFM flapper is maxed out in a stock Turbo car past a certain point? It would (should ) not be difficult to isolate the signal out of the AFM and put a low-impedance voltmeter -for example, a digital one- on it and just watch it as you drive (assuming the computer is reading output in the form of a voltage across the varying resistance representing flapper position...I haven't studied how this works, perhaps it's a current). This sort of investigation is what I intend to do before I start trying to modify my fuel system so I know what I'm dealing with. My car runs pretty much off-scale rich across the board according to the WBO2 readings in my dyno results, so I know I can pick up some power by getting things first sorted to where they run correctly stock. Sorry if some of this is a little OT Quote Link to comment Share on other sites More sharing options...
Guest bastaad525 Posted December 15, 2003 Share Posted December 15, 2003 yeah jersey I wish ;-P I'll get it in... someday... I like the idea of that AFM test... I dont have a voltmeter or anything like that to do it myself but it'd be great if someone here with the right equipment would test this and see exactly how effective the AFM is. Quote Link to comment Share on other sites More sharing options...
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