which lpfp to buy walbro 255 or 450?

J3NGOe90 · 08-12-2014, 03:04 AM

I'm planing to run e70, which one you guys recommend..

stickz23 · 08-12-2014, 03:17 AM

I have the 255 and have ran e70. Pressure didn't drop once, but HPFP didn't like it. Came down to e60 and all seems well.

J3NGOe90 · 08-12-2014, 03:18 AM

Quote:

Originally Posted by stickz23

I have the 255 and have ran e70. Pressure didn't drop once, but HPFP didn't like it. Came down to e60 and all seems well.

thanks for response, so there is no difference between walbro 255 and 455?

stickz23 · 08-12-2014, 03:21 AM

I'll let the experts jump in, but if I remember correctly the 455 is e85 rated while the 255 isn't. Even though the 255 isn't e85 rated, it has proven it can handle it.

I went 255 simply because the install seemed easier.

SteveAZ · 08-12-2014, 03:45 AM

Both of those pumps will max out your otherwise stock fuel system. Whether or not you are able to run E70 is dependent upon quite a few variables....tune, hardware, location, E85 source.... It's best just to log on the conservative side and increase your content based on those logs. If you run meth....E70, E85....no problem.

J3NGOe90 · 08-12-2014, 12:15 PM

Bump about to purchase one

tc535i · 08-12-2014, 12:16 PM

I was at 75k so I just swapped the whole thing for the 450

ran ~e60 and had no fuel trim issues, did 420/440 wheel with fbo and map 7

Eat.Sleep.Race · 08-12-2014, 12:33 PM

Fuel-it.biz stage 2, run E60

brewnami · 08-13-2014, 10:52 AM

The 450 is certified for E85, while the 255 is not. However, the 255 has been used for the last few years with constant E85 with no issues. Both will max out the capability of your stock HPFP, but if you purchase from Steve at fuel-it.biz, the 450 kit already comes in its own modified bucket so it is plug and play and very easy to install. I purchased my 255 from him and its a longer install, and is run in tandem with your stock LPFP, unlike the 450 which is not run inline, but rather replaces the stock LPFP all together.

At the end of the day, its about how much money you're willing to spend. Both work great, but the 450 is an easier install. You just have to figure out for your self if its worth twice as much as the proven 255.

brewnami · 08-13-2014, 10:55 AM

Also, depending on whether or not you are currently running methanol, E70 may be a little much. Play around with different mixtures and run logs to see which mixture works best in your car. I've had two 335i's and my 2007 ran better with 5.5 gallons on map 5 than my 2009 did with the same mods and mixture. I am running about 9.5 gallons now, but I run methanol and have a 255 inline.

NA55 · 09-12-2014, 01:17 AM

The 255 will work just as well if your stock lpfp is still strong.. If you have higher mileage then consider the fuel-it.biz stage 2 kit.. It's a quality kit which is put together better than stock and it's very easy to install..

RMJ335i · 06-21-2015, 05:48 PM

Quote:

Originally Posted by tc535i

I was at 75k so I just swapped the whole thing for the 450

ran ~e60 and had no fuel trim issues, did 420/440 wheel with fbo and map 7

Did you do the 450 swap yourself DIY or send it in? I just ordered the pump and would like a few tips before i swap out the pump in the bucket.

csu87 · 06-21-2015, 11:59 PM

Quote:

Originally Posted by RMJ335i

Did you do the 450 swap yourself DIY or send it in? I just ordered the pump and would like a few tips before i swap out the pump in the bucket.

Read the other 2 recent threads about this. More to it than just swapping pumps.

tc535i · 06-22-2015, 11:23 AM

Quote:

Originally Posted by RMJ335i

Did you do the 450 swap yourself DIY or send it in? I just ordered the pump and would like a few tips before i swap out the pump in the bucket.

bought the kit

08-12-2014, 03:04 AM	#1
J3NGOe90 Banned 57 Rep 772 Posts Drives: e92 335i 6speed MT only! Join Date: Jul 2011 Location: brooklyn iTrader: (2)	which lpfp to buy walbro 255 or 450? I'm planing to run e70, which one you guys recommend..
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08-12-2014, 03:17 AM	#2
stickz23 Modify the N54 17 Rep 365 Posts Drives: 335i Join Date: Jun 2011 Location: Downey, California iTrader: (15)	I have the 255 and have ran e70. Pressure didn't drop once, but HPFP didn't like it. Came down to e60 and all seems well.
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08-12-2014, 03:21 AM	#4
stickz23 Modify the N54 17 Rep 365 Posts Drives: 335i Join Date: Jun 2011 Location: Downey, California iTrader: (15)	I'll let the experts jump in, but if I remember correctly the 455 is e85 rated while the 255 isn't. Even though the 255 isn't e85 rated, it has proven it can handle it. I went 255 simply because the install seemed easier.
	Appreciate 0 Quote

08-12-2014, 03:45 AM	#5
SteveAZ Captain 64 Rep 654 Posts Drives: 135i Cab Join Date: Jul 2012 Location: Phoenix, AZ iTrader: (5)	Both of those pumps will max out your otherwise stock fuel system. Whether or not you are able to run E70 is dependent upon quite a few variables....tune, hardware, location, E85 source.... It's best just to log on the conservative side and increase your content based on those logs. If you run meth....E70, E85....no problem. __________________ 2008 E88--Fuel-It! Stage 4 LPFP & PI--PS2 turbos--JB4/MHD--FBO--662whp/604wtq 2011 E90--Fuel-It! S2BL LPFP and PI--PS2 Turbo--JB4/MHD--FBO--546whp/589wtq 2013 Mini JCW--Tune--DP--FMIC--a couple Fuel-It! goodies--265whp/320wtq 2013 F10--JB4/BM3 2015 F82--Fuel-It! Stage 3 LPFP & PI--PS2 Turbos-- JB4/BM3-FBO
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08-12-2014, 12:15 PM	#6
J3NGOe90 Banned 57 Rep 772 Posts Drives: e92 335i 6speed MT only! Join Date: Jul 2011 Location: brooklyn iTrader: (2)	Bump about to purchase one
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08-12-2014, 12:16 PM	#7
tc535i Lieutenant Colonel 222 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	I was at 75k so I just swapped the whole thing for the 450 ran ~e60 and had no fuel trim issues, did 420/440 wheel with fbo and map 7
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08-12-2014, 12:33 PM	#8
Eat.Sleep.Race Out Boosting... 248 Rep 3,987 Posts Drives: F30 335i M-Sport Join Date: Feb 2014 Location: Northern VA iTrader: (7)	Fuel-it.biz stage 2, run E60 __________________ Alpine White M-Sport F30
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08-13-2014, 10:52 AM	#9
brewnami Major 102 Rep 1,040 Posts Drives: 2009 BMW 335i M Sport Coupe Join Date: Aug 2013 Location: Boston, MA iTrader: (5)	The 450 is certified for E85, while the 255 is not. However, the 255 has been used for the last few years with constant E85 with no issues. Both will max out the capability of your stock HPFP, but if you purchase from Steve at fuel-it.biz, the 450 kit already comes in its own modified bucket so it is plug and play and very easy to install. I purchased my 255 from him and its a longer install, and is run in tandem with your stock LPFP, unlike the 450 which is not run inline, but rather replaces the stock LPFP all together. At the end of the day, its about how much money you're willing to spend. Both work great, but the 450 is an easier install. You just have to figure out for your self if its worth twice as much as the proven 255. __________________ 2009 335i M Sport coupe, BSM with black/aluminum interior, 6MT, JB4 G5, MDH Backend Flash, Walbro 255 inline LPFP, VRSF Inlets, BMS 3" catless DP's, Borla Aggressive catback, ER FMIC, ER charge pipe, Tial BOV, BMS 2.3 gal Meth Kit, BMS Sport Oil Cooler Valve, Ported CDV, RB PCV, Cyba ram air scoops, Status Gruppe SRS coilovers, ECS trailing arms, Forgestar F14 SDC.
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08-13-2014, 10:55 AM	#10
brewnami Major 102 Rep 1,040 Posts Drives: 2009 BMW 335i M Sport Coupe Join Date: Aug 2013 Location: Boston, MA iTrader: (5)	Also, depending on whether or not you are currently running methanol, E70 may be a little much. Play around with different mixtures and run logs to see which mixture works best in your car. I've had two 335i's and my 2007 ran better with 5.5 gallons on map 5 than my 2009 did with the same mods and mixture. I am running about 9.5 gallons now, but I run methanol and have a 255 inline. __________________ 2009 335i M Sport coupe, BSM with black/aluminum interior, 6MT, JB4 G5, MDH Backend Flash, Walbro 255 inline LPFP, VRSF Inlets, BMS 3" catless DP's, Borla Aggressive catback, ER FMIC, ER charge pipe, Tial BOV, BMS 2.3 gal Meth Kit, BMS Sport Oil Cooler Valve, Ported CDV, RB PCV, Cyba ram air scoops, Status Gruppe SRS coilovers, ECS trailing arms, Forgestar F14 SDC.
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09-12-2014, 01:17 AM	#11
NA55 Second Lieutenant 32 Rep 269 Posts Drives: 335i Join Date: Oct 2013 Location: LA iTrader: (0)	The 255 will work just as well if your stock lpfp is still strong.. If you have higher mileage then consider the fuel-it.biz stage 2 kit.. It's a quality kit which is put together better than stock and it's very easy to install..
	Appreciate 0 Quote

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