madazfiend/1

iTrader: (1)

Hey guys wondering if some one can help. I have a 13 b t11 streetport w/ rotaryshack oer sidedraft carb and hybrid turbo. I have a holley blue ful pump w/ a mallory fuel reg. Part #4309
Well when I start it my wide band reads in between 11 and 12 but when I drive it, it jumps up to 15, 16. I have my fuel pressure set at 5psi and when I rev it up it does rise so I have no idea what it could be.so if any one can help please do .thanks

BigTurbo74

iTrader: (4)

Why don't you contact rotaryshack? Does your fuel pressure rise with boost pressure?

diabolical1

iTrader: (3)

your jetting?

moremazda

iTrader: (4)

That fuel pump could be falling on it's face when the boost pressure comes up, they aren't meant to be run over 7-8psi.

madazfiend/1

iTrader: (1)

I think there f11 119 I think but once it stops raining ill make sure

680RWHP12A

i told him that

680RWHP12A

they are F11

madazfiend/1

iTrader: (1)

Ya I'm going to take it back and get a mallory. which one should I get is there a sertain one that I should use

680RWHP12A

its gotta be an EFI style hi pressure fuel pump, msd, walbro, Bosch will all work.
come on Joel, i told you this already

madazfiend/1

iTrader: (1)

You told me the holley blue would work because I'm not pushing any boost due to a fresh rebuild. If not my bad I miss under stood you then . But I did fix my fpr problem I had to run a hole new. Return line.I tried calling you and I left a message but no answer so the form was my only resort

madazfiend/1

iTrader: (1)

Well I replaced the fuel pump with a walbro and I've replaced the fuel filter and its still doing the same thing .

moremazda

iTrader: (4)

Post a picture of the carb hat.

madazfiend/1

iTrader: (1)

Well I wish I could my computer been down for a while and I've been useing my blackberry and I haven't figured out how too.
But did you have to change you fuel supply lines to bigger ones.