C U IN REARVEIW

Due to troubleshooting my fuel system issue I may have damaged the stock fuel pump anyways (activated bap for a couple full pulls to troubleshoot bap vs. Pump) so I feel the stock pump needs to be replaced anyways. Would a single walbro 450 intank generate alot of heat and an external secondary (ecs stg 1)?

realcanuk

I don't think it would. I have a Z06 pump intank on a BAP.... 5 years+ and never an issue.

C U IN REARVEIW

Do you feel that me basically over spinning the stock fuel pump for 5mins +/- straight would have damaged it? I dont necessarily want to drop tanks....but all the drivetrain will be out of the car for clutch install.....so now would be the best time

realcanuk

I would doubt it, but really don't know for sure. I was always under the impression that a BAP wont hurt them, so I don't see why 5 minutes would.

C U IN REARVEIW

My tuner said it may have overheated it by overspinning it for that long


* it ended up blowing the bap fuse and car died.....replaced fuse and car ran)

realcanuk

So how did you overspin it if the bap fuse was blown ?

C U IN REARVEIW

Fuse blew as a result of forcing the the bap to stay activated......when i was driving it that way,car kept going lean under boost. Pulled over to unhook jumper wire on hobbs switch and car died. Towed it home,found blown fuse,replaced and car started

camarokidz28

What is the perk of going to an in-tank system versus the external fuel pumps? Higher flow rate?

Tech

One isn't always better than the other, but one benefit of doing them intank means you don't have to put a hole in your plastic gas tank.

C U IN REARVEIW

Im probably having Bret Bradberry do a custom intank dual walbro 450 setup for me

EnginerdVT

Great info in here and I know I'm now reviving this thread... again. i have an 08 car and have concerns about the factory fuel pump putting up with E85. Seeing how I might go in and replace the factory pump with something that might be more E85 friendly, should I just ahead and do in tank pumps, or is it still not worth the hassle and I should just swap the internal pump with a nice single that won't overly heat for typical driving and do external pump(s)? I currently have the single A&A external with my factory in tank pump at 800whp on 93 and some meth. Goal is 2200R on build bottom end 427 and flex fuel (E85 as often as I can) with meth for IATs. Seeing some conflicting info if 1300X injectors are enough for #85 and up to 1100whp...

MGMDET

IMHO I'd do the Fore fuel system while you have the tank out. It's not a fun process and if the cost isn't a concern, now is the time. As for the 1300X, that's what I went with and I designed mine around 1250hp max. I'd talk to Justin at Fore to see what he recommends in your specific situation but should be good.

Unreal

Depends on pump and fuel pressure. I made well over 1100 on e85 with 1300s, but run 58 base pressure, which means 80+ under boost. If you want to run 45 or less base, then yes you may run out. With triple 485s I have more than enough pump to support the pressure. If you are buying new, no reason not to do 1700x though.

EnginerdVT

Thanks for the info. Definitely planning to call and talk to Fore to get their insight.

EnginerdVT

I am currently running an unreferenced external regulator set at 58#. I'd guess that once you go bigger on boost, referencing at the regulator becomes more necessary, but at almost 60# unreferenced I'm sure I'd need more injector. I'll see what Fore says about changing over to boost referenced since I'll be swapping (most likely) to be all on the same system instead of the stock plus external setup I'm running now.