[scottsee]

well i spent a couple hours looking/searching around.

from what i've gatherd, RRFPR's are the same as most Afpr but have ajustable boost/fuel pressure settings. their not static in reffrence to boost. so with RRFPR insted of having a static 1:1 ratio you can change it to 1.7:1 or 3:1 or whatever you want.

so from what i've gatherd if i put one on my car with the 3:1 ratio with fuel pressure set at 43psi i would be raising fuel pressure 3psi for every psi. so at 15psi my fuel pressure in my fuel rail would be about 88psi. i didnt find alot of information about it, it seems to be people are using this so supply more fuel to the injectors durring boost, why?? i dont know. i think a safc2 would be better. i dont think i would want fuel pressure moving around like that all the time..

look at Aermotive's website they all have 1:1 reffrences. matter of fact throughout all the places i went i think i heard of 2 rrfpr's, one was vortec, the other i cant reamber. i kept running across alot of Europen cars, like volvo's, saab, VW's that were running them. a Volvo fourm is actually where i got the most helpfull information.

no wonder i hadn't head of it. it dosn't sound to appeling. like i said before; i'd rather have a static base fuel pressure in relation to boost and ajust airflow signals insted of fuel pressre.