Mods are in sig.

Would i be ok with e85 cause it seems like alot of people use the walbro 255 when i was told i need a DW 300 or a double pumper. I have plans for a bigger tubro kit in the future and when that happens I will buy a bigger fuel pump. In the mean time tho is a 255 ok for the stock turbo? I will also be having GSC S2 cams installed in a month or so and then a tune @ AMS right after that.....I am thinking about buying a Cobb AP for when winter comes so i can switch back to pump gas....what are your thoughts on this????

Is the 255 gonna be ok? If not no big deal. i can deal with 93 for the time being just want that extra goodness!!!

 

your gona need a bigger fuel pump (bigger than the walbro) preferably a double pumper if your going bigger snail and bigger injectors. stick to pump if you stick with the 255.

 

The only person I've ever heard say that there is a problem with using a Walbro with E85 is DW because they claim their fuel pump is "E85 compatible and the Walbro is not." The reality is that I've never heard of a single person having an issue with E85 with a Walbro 255, especially on a stock turbo. Do a search and I highly doubt you'll find a single thread claiming to have an issue. If you took a poll you'd find that the vast majority of people on E85 are using Walbros with almost no issues. On the flip side I have heard of a few people having issues with the DW and the Aeromotive pumps.

Bottomline is if you stay with the stock turbo the Walbro should be fine.

 

walbro 255 is fine on E85 until around BBX Full/FP Red at full song, on the Evo 10.

 

I'm guessing you have the stock turbo. You will be fine with a Walbro 255.


I have one with FIC 1100's and an FP Red. I just run out of fuel at redline.

As for ethanol and walbro... I've been running mine for over a year without issue.

 

we've had nothing but problems on our 255 pumps on e85. they go out every 6mos

 

Use authentic Walbros? I've had the same Walbro pump in my 05 Evo for over 2 years now, 100% E85 24/7 365

Tuned a bunch of guys still on the same walbros for almost the same amount of time, 100% E85.

 

Good info guys thanks....and yes i just have the basic bolt on's like it says in my sig. No turbo upgrade for another year or two (there not cheap.) So I'm trying to save money atm since i bought a 255 and wasnt aware that u couldnt run e-85 (thats what i was told) until i heard that people were doing it w/o problems. I had to double check tho and it seems like its fine to use.

Another question that arose is if i get a cobb ap for when winter comes and the fuel changes to different mix's is it ok for me to swap back and forth between e85 and 93 octane maps and not have problems with my fuel system (i.e. pump, injectors, rails, hoses?) Not to mention that it gets to be like -20 here with the wind chill. Even tho some people claim not to have any problems with the car starting and then i hear that some do. I just dont want to mess around with any of that and play it safe on pump gas through winter.

And yes when i do go with a bigger turbo i plan on getting the bushur double pumper.

 

^^^ + 1

 

I ran my 255 in my X for months on the stock turbo. It's still in the car now with another pump in my dual pumper, still working fine...well it will be when my car is working again. But its been in the tank for 2 years now.

 

Generally it's probably better to try and stick to one fuel, either E-85 or pump because switching back and forth all the time means you're probably going to have a really incosistent fuel mix which probably isn't a problem on your pump gas map but on the E-85 map it could be if you had too much 93 left in the tank when you switched over and the octane rating wasn't high enough.

Your fuel system will be fine switching back and forth as long as you've got a reputable kit for the 255 that has upgraded lines that are E-85 safe and a decent fuel filter. I've run the BlaqOps single 255 kit with FIC 1100's for close to a year now without problems and my car has been on E-85 with the exception of 1 tank of 93 during that time without any problems to date. Stock turbo figures in sig with this setup and made great power over 93.

It might be more difficult to start if the car is sitting in freezing cold weather outside vs in a garage but you can adjust the IPW (injector pulse width) to help with this, otherwise just let it turn over a bit and it will fire up. I've never noticed anything more than 1-2 second delay in starting with it being like 15 degrees outside.

You can switch maps with opensource or the AP whichever you happened to be tuned on pretty easily now with the Tephra Mod maps or basic AP software that stores multiple maps.

 

I'm on the same 255 since Aug. 08 on E85 and it still dosen't wine.

 

When i put the walbro pump in i got the kit from cobb, but I didnt use there filter cause i couldnt get the pump to fit correctly in the core so i reused the stock filter. Or are u talking about a different filter. It also came with an upgrade hose which should be fine for e-85.

When i would switch maps it would only be right before winter comes (run 93 through winter) and when it gets to be nicer outside switch back to e-85 so i would only be switching like twice a year. And i would always switch maps on a completly empty tank so I wouldnt run into any problems.

 

The pump isn't relative to the turbo size... it is relative to the injector size. Below 30psi of boost pressure (which adds 30psi to fuel pressure) a 255 (preferrably the HP model) should supply just more than enough fuel for a 1000cc injector. A 1000cc injector should be enough for all but the most crazy of stock turbo setups.

I'd recommend the blaqops kit (housing and lines)... but you might want to consider the DW300 pump or even better, the aeromotive 340HP. You should then have plenty of fuel in the future and won't have to worry about controlling a 2-stage setup.

If you go for the 340 you are probably OK for whatever you plan in the future... so do it once and do it right.

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I ran e85 all winter long without any issues. My IX had some slight issues starting when it got really cold, but the X was without problem. The only consideration I would make is to turn down the boost a bit when it gets really cold, because if you have a really high boost map on e85 it can still spike in the cold weather (unless you have a map that compensates for temp... I don't think the X does but the tephramod for the IX did).

It is good to watch your wideband when the temp starts to change and keep an eye on fuel trims, but I didn't notice much of a difference on either car.

 

Well for one i dont ever plan on getting on my car in the winter. I would probably never even come close to full boost cause...really theres no point for it. I will be driving it to work and thats it.

I do plan on a bigger pump in the future but like i said im trying to save some money and just stick with the 255 since i do have a stock turbo and already have 1000 cc injectors. I just dont want to buy a new pump until i really have to i.e. a bigger turbo set up..

Im assuming that the 255 will be okay for my set up to run e-85.....BUT is there anything else i should consider getting atm like a new fuel filter? And will the stock filter on the bottom of the pump be ok?