Evo VIII/IX fuel pump sock for an X with E85?

goofygrin · Oct 20, 2009, 03:30 PM

Reading on here, it seems that you need a new sock for the fuel pump assembly if you go E85. Do you need one at all? From an 8/9? Which one do you need?

I know you need an external fuel filter as well since you're removing the one with the pump when you swap pumps.

Any recommendations for an off the shelf one other than URs?

lowkey · Oct 20, 2009, 08:01 PM

Quote:

Originally Posted by goofygrin

Any recommendations for an off the shelf one other than URs?

I was looking at this one from HB Speed

Pre-order Evo X fuel pump housing kits with filter

goofygrin · Oct 20, 2009, 09:31 PM

Hmm... I got the housing, but what I got did NOT have a filter...

GSXR · Oct 20, 2009, 11:37 PM

Do you have an upgraded turbo? If not, you won't need a fuel pump upgrade for e85. Just use 1000cc injectors and you'll be about 90% duty cycle.

delkat · Oct 21, 2009, 12:02 AM

I thought the fuel pump upgrade was needed with E85 and the stock turbo??

GST Motorsports · Oct 21, 2009, 12:23 AM

Quote:

Originally Posted by GSXR

Do you have an upgraded turbo? If not, you won't need a fuel pump upgrade for e85. Just use 1000cc injectors and you'll be about 90% duty cycle.

Ran out of stock pump on E85 on stock turbo:

http://forums.evolutionm.net/7044333-post55.html

Walbro upgrade fixed it.

Now it's on BlaqOps Progressive Double Pumper (progressive twin pumps) with a Dom2

GSXR · Oct 21, 2009, 01:07 AM

Quote:

Originally Posted by GST Motorsports

Ran out of stock pump on E85 on stock turbo:

http://forums.evolutionm.net/7044333-post55.html

Walbro upgrade fixed it.

Now it's on BlaqOps Progressive Double Pumper (progressive twin pumps) with a Dom2

I can't remember but wasn't that car running Bosch 950cc injectors?

Let me recant my statement. You may be ok with 1000cc injectors and e85 w/o a fuel pump upgrade.

Let me just post my friend's setup as a data point. He was running DW 1000cc injectors w/ bolt-ons and stock fuel pump. I just checked his logs and he's at about 91% duty cycle peak w/ AFRs at around 12.0.

linjy2 · Oct 21, 2009, 03:39 AM

Quote:

Originally Posted by goofygrin

Hmm... I got the housing, but what I got did NOT have a filter...

my hb speed housing came with the sock filter.

as for a inline fuel filter, i bought the fuel lab one which is rated for e85, but that thing is huge.. so i also bought the russell competition one and will probably run that one.

goofygrin · Oct 21, 2009, 07:39 AM

on 93, I'm already maxing out duty cycles with the stock injectors @ 11.5 AFRs. I think the walbro upgrade, especially since I track the car, is worth the effort.

I've got 1000 cc injectors as well.

goofygrin · Oct 21, 2009, 07:39 AM

Quote:

Originally Posted by linjy2

my hb speed housing came with the sock filter.

Crap. I PMed hbspeed. Maybe they just forgot it (I was pressuring them

)