[TXTT]

Well guys I have been reading mostly old threads about the upgrade mostly from mike and shiv.

They any of them come up with a way to step up the voltage that supplies the lpfp?

Adding Another load(fuel pump) to the circuit will just make two pumps run half assed.

Can someone please enlighten me . Thanks .

[OpenFlash]

Funny how the "half assed" solutions are holding up very well while the other approaches don't have such a good success rate

[TXTT]

I agree they work but correct me if I am wrong please - a motor running over or under its designed range will eventually crap out. In our case the lower voltage would just lead to the pump over heating because flow is what is used to cool it ?

[OpenFlash]

Originally Posted by TXTT

I agree they work but correct me if I am wrong please - a motor running over or under its designed range will eventually crap out. In our case the lower voltage would just lead to the pump over heating because flow is what is used to cool it ?

I'm not sure I follow. What do you think is being over-run? The pump(s) or the pump controller?

[Mike@N54Tuning.com]

I've heard of the Walbro 455 failing in both inline and intank formats but the most common problem when doing a pump upgrade seems to be using poor quality non-submersible fuel line that bursts. The most reliable setup I've seen is the cheap Walbro 255 installed inline. It provides plenty of pressure, costs $100, is easier to install compared to the Walbro intank, and is 1/5th the price of trying to install a Walbro 455 inline.

Mike

[OpenFlash]

Originally Posted by Mike@N54Tuning.com

I've heard of the Walbro 455 failing in both inline and intank formats but the most common problem when doing a pump upgrade seems to be using poor quality non-submersible fuel line that bursts. The most reliable setup I've seen is the cheap Walbro 255 installed inline. It provides plenty of pressure, costs $100, is easier to install compared to the Walbro intank, and is 1/5th the price of trying to install a Walbro 455 inline.

Mike

Many more walbros have failed when using them as a replacement pump than they have when used in-line. The reason is using them in a stand-alone application makes them run harder than having them run as an additional in-line. Walbro pumps are inexpensive (compared to the likes of Aeromotive, Fuel Labs, Weldon, etc,.) and aren't the most durable pumps. So using them in an application were they run in a low stress environment is a whole let better than running then as the only pump, supporting a 73psi differential pressure 100% of the time. Just one of the things you learn about Walbro pumps when you have been using them since 2001

Shiv

[Mike@N54Tuning.com]

Originally Posted by shiv@vishnu

Many more walbros have failed when using them as a replacement pump than they have when used in-line. The reason is using them in a stand-alone application makes them run harder than having them run as an additional in-line. Walbro pumps are inexpensive (compared to the likes of Aeromotive, Fuel Labs, Weldon, etc,.) and aren't the most durable pumps. So using them in an application were they run in a low stress environment is a whole let better than running then as the only pump, supporting a 73psi differential pressure 100% of the time. Just one of the things you learn about Walbro pumps when you have been using them since 2001

Shiv

To be candid I've read some less than flattering reviews of Walbro pumps from other platforms. You guys should be using OEM quality Bosch pumps. But with the in tank setup every single problem I've heard about has been install related and not the pump itself failing. The Walbro 455 inline failure I heard about was the actual pump failing. So personally I'm not convinced any of these current solutions would make it 100k miles like an OEM pump would. I have yet to hear of a single Walbro 255 inline failure and it's so inexpensive and easy to install that seems like the no brainer to me. It's meant to be installed inline unlike the 455 which is meant to be installed in tank. I have no idea if it can support 700rw or whatever you guys are trying to do on your end with single turbos but for the average stock turbo or RB turbo car that is the hot ticket.

Mike

[OpenFlash]

Originally Posted by Mike@N54Tuning.com

To be candid I've read some less than flattering reviews of Walbro pumps from other platforms. You guys should be using OEM quality Bosch pumps. But with the in tank setup every single problem I've heard about has been install related and not the pump itself failing. The Walbro 455 inline failure I heard about was the actual pump failing. So personally I'm not convinced any of these current solutions would make it 100k miles like an OEM pump would. I have yet to hear of a single Walbro 255 inline failure and it's so inexpensive and easy to install that seems like the no brainer to me. It's meant to be installed inline unlike the 455 which is meant to be installed in tank. I have no idea if it can support 700rw or whatever you guys are trying to do on your end with single turbos but for the average stock turbo or RB turbo car that is the hot ticket.

Mike

Many of our customers who are using our in-line walbro pump kit have previously used the "DIY" Walbro set up only to have their pumps fail. Those who didn't had experience pump failure had problems with the hoses disintegrating. I'm surprised the "tuner" who created the DIY didn't understand the difference between standard EFI fuel line and submersible EFI fuel line. A good example of why things should be done correctly the first time.

We actually do use the Bosch 044 and 392 pumps in some of our N54 applications. The ones that don't require ethanol compatibility.

Shiv

[NY135ivishnu]

Just wanted to put something into perspective on my 93 supra all I did was add another factory fuel pump (2 stock ) twinturbo supra fuel pumps and I was pushing 9** on race gas with a 3 speed auto.

Has anyone tried just adding another stock pump??? (Y) to the output and using a relay to power it ?

[3000GT MR]

Anyone looking for the proper hose to use you need SAE30R is about $5-7/ft.

[ZTUNER]

What's wrong with a Bosch 044 for a inline solution ?

Harry

[OpenFlash]

Originally Posted by ZTUNER

What's wrong with a Bosch 044 for a inline solution ?

Harry

Nothing at all. Great pump. Same with the 392. They just aren't officially E85 compatible. Although some have used them in E85 applications.

[3000GT MR]

Originally Posted by 3000GT MR

Anyone looking for the proper hose to use you need SAE30R is about $5-7/ft.

Oops i meant SAE30R9

[3000GT MR]

Originally Posted by 3000GT MR

Anyone looking for the proper hose to use you need SAE30R is about $5-7/ft.

Oops i meant SAE30R9

[TXTT]

So I guess the answer to my question is that there is no way to increase the voltage supply - other than a $400 booster.

What is the current at 9-11.5v on the Venturi ?

My buddies out here are running the deatschwerks dw300 inline fuel pump. Any insight on that .

[ZTUNER]

Originally Posted by shiv@vishnu

Nothing at all. Great pump. Same with the 392. They just aren't officially E85 compatible. Although some have used them in E85 applications.

Agreed, I have used it with pure E85 with no failure yet. Put about 40 tank fulls thru it. Different platform but should be fine on the 335 too.

Harry

[07tundra]

Originally Posted by shiv@vishnu

Many of our customers who are using our in-line walbro pump kit have previously used the "DIY" Walbro set up only to have their pumps fail. Those who didn't had experience pump failure had problems with the hoses disintegrating. I'm surprised the "tuner" who created the DIY didn't understand the difference between standard EFI fuel line and submersible EFI fuel line. A good example of why things should be done correctly the first time.

We actually do use the Bosch 044 and 392 pumps in some of our N54 applications. The ones that don't require ethanol compatibility.

Shiv

If you read a little he the "tuner" clearly stated to use submersible e85 quality hose it's not his fault that gates makes a shit hose for 30 bucks a foot.

[TXTT]

FYI the SAE30R9 is not submersible .. Other than the napa h209what are you guys using for the alcohol resistant hose ?

[OpenFlash]

Originally Posted by 07tundra

If you read a little he the "tuner" clearly stated to use submersible e85 quality hose it's not his fault that gates makes a shit hose for 30 bucks a foot.

Actually, the tuner you are referring to only started recommending submersible hose after they started to fail in the field. It doesn't seem like he understood that standard fuel injection like was only coated on the inside!

[TXTT]

These threads remind me of the mustang forums threads.. Mostly everyone is a dick to everyone . Y'all have a good one .

[07tundra]

Originally Posted by shiv@vishnu

Actually, the tuner you are referring to only started recommending submersible hose after they started to fail in the field. It doesn't seem like he understood that standard fuel injection like was only coated on the inside!

If you say so

[07tundra]

"FYI the SAE30R9 is not submersible .. Other than the napa h209what are you guys using for the alcohol resistant hose ?"



Most people were using the gates hose fully submersible e85 hose. Some failed because of installer error and some because of the gates hose is crap. But no one could have known that gates hose was crap. The gates hose did crap out on me but after replacing it I've been running the in-tank replacement just fine for a while now on E70 so said "tuners" DIY works just fine in my book.

I'm currently running FC332-04 hose i've checked on it from time to time and it's just fine.