very nice Tim, congrats!

 

he asked what your setup was. and if your staying n/a i would put the money elsewhere. I love both your cobras tim, definitely good gains from the corn!!

edit: https://mustangforums.com/forum/4-6l...onversion.html

heres a thread from about a week ago with someone basically asking the same question

 

GT fuel pumps, mod. FPDM and 60# injectors (which I had from last year) ...along with a GOOD tune! That's it

 

what does mod. FPDM mean? Do you mean mustang gt fuel pumps ? I thought ours only had 1 fuel pump.

 

03/04 Cobra's have twin pumps!! Sorry, GT Supercar fuel pumps!

FPDM - Fuel Pressure Drive Module. ... located in the trunk! Designed to handle the extra voltage of the GT Supercar pumps!

 

you have a GT, so your fuel system is a little different than this Cobra. the main difference is the type of tank, they have a much better sump type tank and better pumps, where as GT's have a plastic tank inside to act as a sump. most people just upgrade to a larger 255lph pump inside this bucket, then drill holes inside the bucket so that the pump can flow freely without restriction(or just ignore the fact that it can create a vacuum inside the bucket). drilling holes causes problems though, as below 1/4 of a tank and hard acceleration or turns can cause the pump to cavitate (bad).

other option is a fuel hat with dual pumps. but will still have the same problems as the single large pump in basket like above.

last two options are a sumped tank of some kind, ie an 03/04 cobra tank, or an externally sumped tank.

--------------

back on thread, i wish i could find e85 near me. everywhere i look noone has it. nearest station i can find using interweb is 45 minutes drive.

 

^^^ Yes, some guys with Mustang GT's just upgrade to the 03/04 Cobra fuel tank!! ...Personally, I'd go to an external pump - return style!!!

 

yea, its a bit more of a PITA install, but sump and external pump to me makes the most sense. ease of access to pumps & lines, easily upgradable to 2, 3 or even 4 pumps. plus if done on a budget it can be done cheaper (well actually i havent looked at the prices lately for cobra tanks & etc so it may be about the same)

edit: plus i just dont trust that returnless crap.