1972 F-250 2wd to 4wd build

[rattle_snake]

Ya, it does. It's part of running aftermarket EFI, ignition, fuel system, ect vs OEM. Holley QC is not that of any OEM. Carrying a spare O2, regulator, and injectors is about all I can do other than swapping in a 7.3 godzilla.

 

[FleshEater]

Ya, it does. I need to swap in a 7.3 Godzilla.

Well, you know what to do. Get on it.

 

[350TacoZilla]

Does your dual plane have a solid wall in the middle of it that comes up flush with the carb mounting flange? If so you might want to try trimming a window into the top of it or running a spacer that is open in middle, seen it few times with the carb replacement style Fi systems where they do not like running with the divided style intake or even worse the 4 individual hole style. Either way the open spacer or the type that starts open then smooths down into the 4 holes might help you out.

 

[rattle_snake]

Yes the 460 performer intake comes with a divided plenum of an odd shape. I initially ran a quasi open/4hole spacer and the EFI was happy. I have since switched to a nitrous plate that is 'open' other than the spray bars that sit over the divider wall. It whistles so I then worked the wall and overall opening with a die grinder to smooth things out. It helped the noise somewhat.

Had I had a single plane I could have altered injector size in programmer and allowed the system to re-learn. In theory.

 

[Levigarrett76]

. swapping in a 7.3 godzilla.

DOOIITT