Quote:
Originally Posted by camcojb
I have run rear-bypassed systems with and without a vacuum reference to the regulator. Both ways worked fine for me. With a forced induction setup I like the reference line so I can get additional fuel pressure under boost.
I think you're fine running without it, and just having a static (unchanging) fuel pressure.
Jody
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Jody - Ditto this.
On the normal XFI etc style ECU's -- it's an either or game... and where I've seen people run into problems is they tune WITHOUT a vac reference then later someone trying to fix and issue decides to run WITH one... DO THAT and the system needs to be re-tuned.
On a big motor - like I think he's running (a 502?) - going WOT will maybe save a lean spot using a vac referenced regulator? Since you can't TUNE this out like you would on XFI etc. Just wondering out loud here.