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      02-13-2014, 11:44 AM   #1
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Walbro LPFP 455

Does anyone know where I could find the upgraded fuel pump for the cheapest price?
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      02-13-2014, 12:05 PM   #2
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Quote:
Originally Posted by White135i View Post
Does anyone know where I could find the upgraded fuel pump for the cheapest price?

call 818 312 6712

he does it for cheap... however if you just want the pump, check ebay
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      02-13-2014, 12:31 PM   #3
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or ebay

OP do you have a link for install DIY???
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      02-13-2014, 03:43 PM   #4
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I've found it on eBay for $190 + Shipping, but if you PM me I can actually sell you a spare one I have
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      02-13-2014, 05:06 PM   #5
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      02-14-2014, 03:30 AM   #6
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Please anyone can share at least parts which I need to install one? Will it go in tank like replacement of oem or inline with oem?
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      02-14-2014, 07:36 AM   #7
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Quote:
Originally Posted by RimasRS
Please anyone can share at least parts which I need to install one? Will it go in tank like replacement of oem or inline with oem?
Are you looking for an inline? If so over on the other forums there is a DIY and someone selling the kits. This guy went out and bought all the connectors and wire and is selling them in a kit. You would just have to buy the pump itself. I got one off eBay for $100 shipped.
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      02-14-2014, 08:21 AM   #8
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Quote:
Originally Posted by MuNkY6913 View Post
Are you looking for an inline? If so over on the other forums there is a DIY and someone selling the kits. This guy went out and bought all the connectors and wire and is selling them in a kit. You would just have to buy the pump itself. I got one off eBay for $100 shipped.
I assume you mean SteveAZ on the N54 forums. If so, his kits are still at least a month out. He's still in development, and they are specifically for the 255 pump.
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      02-14-2014, 10:32 AM   #9
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Yep that's the one. Just noticed 455 not 255. I ended up just ordering all of the parts from amazon and got wire from a local electric store. Not sure what's all involved in the 455.
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      02-14-2014, 10:34 AM   #10
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Quote:
Originally Posted by Stohlen
Quote:
Originally Posted by MuNkY6913 View Post
Are you looking for an inline? If so over on the other forums there is a DIY and someone selling the kits. This guy went out and bought all the connectors and wire and is selling them in a kit. You would just have to buy the pump itself. I got one off eBay for $100 shipped.
I assume you mean SteveAZ on the N54 forums. If so, his kits are still at least a month out. He's still in development, and they are specifically for the 255 pump.
What's the advantages of the 455 over the inline 255?
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      02-14-2014, 03:44 PM   #11
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Originally Posted by MuNkY6913 View Post
What's the advantages of the 455 over the inline 255?
Not much as I recall. The 455 flows a bit better, but they are still cheaper pumps. I dont think you can flow enough for 100% e85 with the 455
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      02-14-2014, 04:29 PM   #12
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What 455? The highest output pump Walbro makes is 255lph, the GS342, and its probably only good to 450-500hp to the crank on pump gas for normal port injection, single-pump engines.

Google searches and Walbro's own website have no references to such a pump. I found a link to ebay, but only shows 455lph at 0 psi at 13.5v, which is retarded. It's probably the same GS342 that Walbro quotes at 255lph at more reasonable situations (I think 255lph @ 45psi).

I wonder if the GS342 is even worth the bother over stock other than just wear replacement and preventative maintenance. Aeromotive makes a few pumps that will flow a lot more.

Anyway, I think everyone should stop throwing "455" around as this is just confusing and bad information... Walbro makes no pump with that kind of flow in any situation worth the time to mention.
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      02-14-2014, 05:14 PM   #13
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Quote:
Originally Posted by Freon View Post
What 455? The highest output pump Walbro makes is 255lph, the GS342, and its probably only good to 450-500hp to the crank on pump gas for normal port injection, single-pump engines.

Google searches and Walbro's own website have no references to such a pump. I found a link to ebay, but only shows 455lph at 0 psi at 13.5v, which is retarded. It's probably the same GS342 that Walbro quotes at 255lph at more reasonable situations (I think 255lph @ 45psi).

I wonder if the GS342 is even worth the bother over stock other than just wear replacement and preventative maintenance. Aeromotive makes a few pumps that will flow a lot more.

Anyway, I think everyone should stop throwing "455" around as this is just confusing and bad information... Walbro makes no pump with that kind of flow in any situation worth the time to mention.
http://www.driven2automotive.com/wal...fuel-pump.html
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      02-14-2014, 05:46 PM   #14
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Quote:
Originally Posted by Stohlen View Post
Not much as I recall. The 455 flows a bit better, but they are still cheaper pumps. I dont think you can flow enough for 100% e85 with the 455
Quote:
Originally Posted by Freon View Post
What 455? The highest output pump Walbro makes is 255lph, the GS342, and its probably only good to 450-500hp to the crank on pump gas for normal port injection, single-pump engines.
It's the Walbro 450 LPH - E85 Compatible Fuel Pump. I am running the BMS In-Bucket LPFP Walrbo Upgrade with the 450 LPH and am tuned for straight E85, no problems with fuel trims or fuel pressure drops (been over a year now). The biggest thing with this install is making sure that the fuel lines are securely connected without any kinks in the lines that could potentially restrict flow.


The Walbro Inline is just another LPFP upgrade option that piggybacks it with the OEM LPFP (which technically isn't approved for high ethanol concentration use).

The best price I've found for a Fuel Pump + Install Kit is $205; Usually the Pump goes for $195 and an Install Kit for $10-15. If you buy from an authorized Walbro vendor, it comes with a warranty (forget the length), but it's already saved me once because my LPFP died and Walbro warrantied it'd right out.


For anyone interested, I am selling a BRAND NEW backup pump for $175 + Shipping (In the US, I can send it USPS Flat Rate Box). You'll save ~$20 (plus tax + shipping), which you can put towards an install kit. No low balling, I can sit on the pump or sell it to my local speed shop at retail value.
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      02-15-2014, 02:17 PM   #15
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So what options we have? And which option works best?

Ive read that walbro 455 is to week to work on its own and that walbro 255 inline is much better option...
Thoughts?

Which one setup is cheapest and easiest to DIY
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      02-16-2014, 02:57 PM   #16
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Walbro 255 inline is pretty cheap and proven. I run the fftec 455 (sorry freon) inline pump upgrade with my stock lpfp and bucket. No dips in pressure all the way up to 83% ethanol so far. Stock turbos ~460whp 22psi midrange. Been running this set up for ~10k miles no issues.
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      02-16-2014, 08:10 PM   #17
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For 95+ percent of people if not virtually a 100%, I'd recommend the 255 unless your fuel system is modified. Even then, you're still not going to get any more fuel through the HPFP. Doing port injection?...E85 injection?...then your situation may not apply.

I run 100% E85 and E85 injection but my fuel system is far from stock and while I wasn't running a 255 pump for a while, I used to run one at E70 until I did some other experiments. I also ran a 450 pump for a while but I switched over to Fuelab with a stock LPFP assembly so I could run an external system with a return to do some other stuff I had in mind. I now have a 255 back in and will be pushing it to the limit to see what it can do with everything I've learned throughout this process. But again, as was mentioned, the 255 is likely all you need.

As for the kits, I released 10 of them today (to N54 members only) to verify everybody has a smooth install and I don't get overwhelmed...the full release will be March 7th. Whether you buy the parts and do it yourself, or do my kit...it makes no difference to me. I did these to help people do it right.

Here are a couple videos I did for my testing...





And here is the DIY I wrote for it.

https://drive.google.com/?utm_source...earch#my-drive

(if you download the file (8 megs) the pictures are much more clear.
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