WTB: AEM fpr

[A-dub5513]

Not able to lower fp's w/ Cartech; looking for AEM fpr. Where can I get a new one for a good price? On the other hand, might take a used one as long as it's in good condition...

Thanks,
A-dub

[A-dub5513]

I found an AEM fpr (part# 25-302) for sale on another board and wanna jump on it. Can anyone confirm whether this is the correct part for my '99 GSR?

Thanks,
A-dub

[JRCivic]

You shouldn't be RAISING or LOWERING your static fuel pressure with the Cartech... replacing it with an AEM will do nothing but harm.

The AEM is a fuel pressure regulator... not a boost dependent rise-rate regulator. It only raises fuel pressure 1:1 under boost... just like the OEM FPR. The Cartech will raise fuel pressure anywhere from 2.5:1 to nearly 8:1 under boost.

Look at it this way: The fuel rail mounted regulator handles all fuel pressure duties under vaccuum... from 30" Hg all the way up to ZERO boost. The Cartech takes over from there.

[kobe 8]

wrong model for you gsr. s/b 25-300

[A-dub5513]

JRCivic: I was not going to replace the Cartech, but, rather, use it in conjunction WITH the Cartech. I thought that was the advice given to me on previous posts since the B&M was not able to lower the fp's below 52 or so psi's. Is this not correct?

[A-dub5513]

Sorry guys, FYI: I do have 310cc injectors ( which, I just realized, is not in my signature).

[slvr-bullet]

I have an AEM FPR for sale. It's red and comes with 3 orifices. $200USD + shipping (price is negotiable)

Just like this one but red.


AEM's Honda/Acura Adjustable Fuel Pressure Regulator is capable of supporting enough fuel flow for engines in excess of 1000 horsepower. Our patented interchangeable discharge ports enable the regulator's output to match the output of ANY fuel pump. AEM includes a custom barb fitting to accommodate the factory fuel hose, and the base of the regulator is tapped to accept a -6 AN fitting.

Key Features:

CNC-machined from 6061-T6 billet aluminum

No additional parts required for installation

Patented interchangeable discharge ports match regulator output to output of any fuel pump

Mounts directly to O.E. fuel rail, or AEM High Volume Fuel Rail

Adjustable from 20 psi to maximum fuel pump capacity

Manufactured and assembled in the USA

Patent # 6,298,828

[JRCivic]

OK then...
Set the AEM at 32 psi static. Set the Cartech to 34 psi static, with a rise rate of about 3:1. This should get you pretty close. Remember, you will have to use the restrictor in the vaccuum inlet side of the cartech to limit boost signal at the diaphragm. Peak fuel pressures at 10 psi boost should be no more than 72 psi mathematically... probably more like 68-70 would be right, especially if you have a MAP mod.

Good luck.

[gsrev]

I have one just like the one pictured above (blue) that I will ship to you for 130.00