My question is how reliable is the stock fpr with aftermarket fuel pumps. I'm running an external pump with my fuel cell.


If I do install an aftermarket one, probably aeromotive, do you just take the stock fpr off the fuel rail and cut out the internals or something, it's a unique setup with the fuel rail. So you almost need the fpr on there just to hook up the return to the tank.

This post has been edited by czwalga: Feb 22, 2011 - 8:57 PM

no you figure out the thread of the stock FPR and put in a AN fitting and run a -4 line to the FPR. then out the regulator back to the tank

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I guess I didnt take the fpr off the fuel rail, but i just took a quick look yesterday and it looked like it was held on by two bolts, not a thread. I could be wrong; i'll have to take it apart tonight.

Not a thread... like I thought. I really don't want to go through the trouble, I can't weld cast aluminum with accuracy, just tacks and stuff. I think i'm going to try and just use the stock regulator and see how that goes.


Welded on a bung.

i used the walboro 255 pump for 5 years with the stock regulator on my 5sfte.
you should be fine.

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Thanks.... that's pretty much the answer I was looking for. Wasn't sure if the higher volume pump would where the stock regulator out somehow.