Still getting poor gas millage from my 13b Dellorto setup.
The car has no FPR, and I believe a Stock 12a pump. 3.7-4.7 PSI
Bought the car this way... I rebuilt the carb Runs strong, Lumpy idle Poor Millage.
Will upgrade the pump later, Should I still use a FPR? Turned down to 3.0-2.5 PSI
Anyone have experience with the Webber Redline low pressure FPR or just stick with the Holley?

 

I just installed a carter fuel pump and I've had a Mallory fpr because I didn't want to dead head the the fuel pump like most with the Holley fpr the dell needs right about 2.5 psi

 

The Dell will work "OK" with the stock pump but will run lean up top after a few seconds. Thats on a 12A. I suspect for the 13B its even worse. Also, it likes the pressure to be about 2.5 as pinoy suggests.

I've been using the Holley with no issues.