corvette filter regulator plumbing

[Poncho72]

for the gurus which one of the connections is the supply and which is return. i've done many searches and see both as supply and return. i assumed the middle is supply but now not sure. HELP!!!!?
https://static1.pt-content.com/images/pt/2022/09/thidOIPoAxvZ0OYW81_QGQPPHnlFwHaHapidApiP-1.jpg

[thedugan]

202568

[Poncho72]

Thanks, got it. The offset one, and the larger of the 2.

[andrewb70]

Thanks, got it. The offset one, and the larger of the 2.

Make sure that the filter/regulator you are using is an AC Delco or WIX part.

Andrew

[Poncho72]

one i have is from Summit. What issues would i have if not Wix or AC Delco?

[Poncho72]

this one: SUM-230151. should i not use it? i've read product reviews on Wix, ac delco, & Summit brand, and all have about the same ratings....4.5 stars and about the same failure rate of either not regulating at all or providing too much pressure. seems like i may need to consider a diff setup. thoughts? appears that the ac delco is made by WIX as they have the 33737 part # etched on the unit.

https://static1.pt-content.com/images/pt/2022/09/sum230151-1.jpg

[dhutton]

this one: SUM-230151. should i not use it?

https://static1.pt-content.com/images/pt/2022/09/sum230151-1.jpg
I would not use it. There have been quite a few fuel pressure issues related to these no name regulators. Summit buys the cheapest part they can find….

Don

[Poncho72]

Noted Don, see my edit of last post. what direction should i go if not this setup?

[dhutton]

Noted Don, see my edit of last post. what direction should i go if not this setup?
If I was all set up for it I would use the Wix FPR.

I haven't used one in years since pretty much everything I build now has a fifth gen fuel module and vaporworx controller.

Don

[79 Camaro]

I've had good luck with the C5 FFR. But I've only used the Wix or Delco FFR.
Years ago a bought C5 FFR "kit" from Summit. The filter leaked on the outlet side. I spoke to Summit and they sent me a real AC Delco or Wix I forget. They didn't want the old one back so I tossed it in the bin.

[CarlC]

As Andrew and Don have mentioned, use the Wix or ACDELCO/GM part.

We've tested a bunch of them, and there is a difference.