I was wondering if it is possible to use the AEM fuel rail and use the 1/8" tap to hook up an adjustable fuel pressure regulator and run the return line off the center of the rail instead of the end of the rail. Would using the center as the return cause un-even pressure in the injectors since the feed is only coming in from the OEM location?

 

why do you want to run the return from the center of the rail?

 

also, the return line MUST go through the fpr.

 

I want to run barb fittings (i know they arent as nice and purty and great like braided lines but its just me) with the 1/8" tap already on the rail I can use a simple 1/8" npt adapter and bolt the FPR right onto the rail and run the return right off of there. The FPR is the Megan (cheaper FPR) with the gauge already attached. I do have an upgraded liquid filled gauge. Pretty much just curious as to if the pressure in the rail would be equal if I return thru the center with a single feed.

 

EZ set-up..All the holes are threaded for EZ install! Email me back if you have any questions.

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Rob Cardona
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So its ok to use the center of the rail for the return instead of the end? I want to make sure the pressure is the same with all injectors. I love this rail and are those coil pack covers available forsale from you guys? Also, that is a 1/8" thread tap on the back?

 

with as big as the aftermarket fuel rail is, uneven pressure is not a big problem unless youre going for over 500+ horses. my current fuel setup will be able to flow enough for 900hp and it will go from end to end on the fuel rail.

 

as long as you have adequate pressure you should be good either the center or end of the fuel rail but IMO the other end of the rail for return should get you the most consistent fuel pressure.. creates a more uniform flow of fuel, less turbulence

 

that center port is for return lol..

That rail would be great for dual feed in, one center return!

 

dual feed yeah, should be center

 

YEa i should note.. This should only be used for dual feed..

I dunno wha would even happen if you tried doing single feed center exit..

 

Thats what i was asking. Single feed with center exit. I understand its made as an option to have the dual feed with the center exit. With the single feed the center 1/8" is "made" for a fpr gauge or nos

 

im think it would still work as long as you put enough fuel fuel pressure to keep up with your injectors.. the flow would kinda sound awkward though, like you are returning some of the fuel before some of the fuel makes its way to the 2 injectors.. like what ever is left fuel not returned will go to the 2 inj.. i know its not exactly the case but just doesnt sound so smooth flow for me

 

I hear what your saying I felt the same way about the un even flow that why I asked. But its pressure. Shouldnt the pressure be the same in all corners and all areas of the rail. IDK If I could find out what size the damn ends of the AEM, DEZOD, DESCENDANT rails then I could just get my own fitting.

 

John,

I posted the size in your other thread asking about our fuel rail

 

sweet thanks

 

yup its more about pressure, as long as you have enough thats gonna work.. just saying i dont like the idea if center rail for return especially for a single fed

 

since our cars prime the fuel lines after the car was turned off for the next use, and the fuel just goes back to the fuel return. i would imagine that the startup would be a little shaky because your fuel pressure needs to be built up and isn't instant.

 

pressure is almost instant as soon as the pump starts when the key is in the on position.

 

oh alright. i take back my statement then lol