fuel pump alarm and updated LPFP Line in WALBRO

09BMW335i · 05-22-2013, 07:11 PM

installed a Walbro LPFP 455 I now get an intermittent Fuel pump alarm on the system check but i dont recieve a code when i try and read it

tjnitsche · 05-22-2013, 11:10 PM

Quote:

Originally Posted by 09BMW335i

installed a Walbro LPFP 455 I now get an intermittent Fuel pump alarm on the system check but i dont recieve a code when i try and read it

Did you log low fuel pressure to check what was happening? The tubing over the Venturi valve could have slipped off.. The only other thing I could think of is that there is not a complete air tight seal, I think the system checks for that and it could trigger a warning.

09BMW335i · 05-23-2013, 08:33 AM

raining out so i didn't have a chance to log. However i did add E85 (4 gallons) and i haven't had a check service light in 30 miles..

09BMW335i · 05-24-2013, 03:04 PM

Ok pulled out the LPFP and indeed had a line that burst. Here is the updated Version of what was done. see pic below. however I now have the red triangle from death saying i have a fuel pump issue. any thoughts

(Thanks A-Spec for the new design)

Tony@vargasturbotech · 05-24-2013, 10:20 PM

Ok, so you are running the single walbro in the tank? If you do, only use high pressure hose, the other stuff that is rated for fuel injection wont cut it. Almost every car we have installed a LPFP upgrade in, inline, or intank walbro throws a phantom LPFP code and sometimes gives the fuel pump warning. Its either from the extra current the dual pumps are pulling or in the case of the single walbro, could be a couple of things. Stage 3 car has it sometimes too with the parallel set up. My suggestion is, live with the occasional warning as you know why it is there. If you really hate it, I am sure someone can figure out exactly what causes it. We just didn't take the time as I said we know why it was there.

3000GT MR · 05-25-2013, 02:38 AM

Quote:

Originally Posted by Vargasturbotech

Ok, so you are running the single walbro in the tank? If you do, only use high pressure hose, the other stuff that is rated for fuel injection wont cut it. Almost every car we have installed a LPFP upgrade in, inline, or intank walbro throws a phantom LPFP code and sometimes gives the fuel pump warning. Its either from the extra current the dual pumps are pulling or in the case of the single walbro, could be a couple of things. Stage 3 car has it sometimes too with the parallel set up. My suggestion is, live with the occasional warning as you know why it is there. If you really hate it, I am sure someone can figure out exactly what causes it. We just didn't take the time as I said we know why it was there.

Why not run the auxiliary/extra pump off a relay? Keep the voltage the same as stock and the car will never know.

tinnsoldaten · 05-25-2013, 05:19 AM

I believe the pump is not a ON/OFF pump , thats why relay wont do. Im not sure , thought I seen info about it somewhere.

09BMW335i · 05-25-2013, 09:31 AM

Thanks for the input from all will look more into it

enrita · 05-25-2013, 09:33 AM

Pump runs on pwm

3000GT MR · 05-25-2013, 09:36 AM

Quote:

Originally Posted by tinnsoldaten

I believe the pump is not a ON/OFF pump , thats why relay wont do. Im not sure , thought I seen info about it somewhere.

You are right, but that's not to say you can't have your second pump on with no voltage regulation (like most cars). As long as the factory pump is still being controlled

._. · 05-25-2013, 08:04 PM

what's the part number on that y fitting?

09BMW335i · 05-26-2013, 09:14 AM

Let me look and see if I have it

09BMW335i · 05-26-2013, 05:01 PM

Quote:

Originally Posted by 335coupe2007

BRO.. HPF gen 2 modified? May i ask what you did? If you did something to make the drone at highway speeds go away, please tell me what you did. Ill be your BFF fuh eva LOL.. the Drone is killing me. THANKS!

i will have pics and sound after june 6th pipes are being made currently will do a review on it.

BQTuning · 05-26-2013, 07:52 PM

Quote:

Originally Posted by Vargasturbotech

Ok, so you are running the single walbro in the tank? If you do, only use high pressure hose, the other stuff that is rated for fuel injection wont cut it. Almost every car we have installed a LPFP upgrade in, inline, or intank walbro throws a phantom LPFP code and sometimes gives the fuel pump warning. Its either from the extra current the dual pumps are pulling or in the case of the single walbro, could be a couple of things. Stage 3 car has it sometimes too with the parallel set up. My suggestion is, live with the occasional warning as you know why it is there. If you really hate it, I am sure someone can figure out exactly what causes it. We just didn't take the time as I said we know why it was there.

Is it possible the DME is coded to sense electrical irregularities which would think the stock pump is malfunctioning when there is actually an aftermarket LPFP ?

Why not rig up a some sort of test transistor to see if it would correct this ?

09BMW335i · 05-27-2013, 08:36 AM

Quote:

Originally Posted by BuraQ

Is it possible the DME is coded to sense electrical irregularities which would think the stock pump is malfunctioning when there is actually an aftermarket LPFP ?

Why not rig up a some sort of test transistor to see if it would correct this ?

I was thinking that. I will let you know what I come up with

cleex024 · 05-27-2013, 09:57 AM

So was this an easy diy? Deciding either between this or the inline addition one in series

tjnitsche · 05-27-2013, 10:10 AM

Quote:

Originally Posted by cleex024

So was this an easy diy? Deciding either between this or the inline addition one in series

I did the drop in walbro 455 lpfp, from my experience inline would be an easier option, I thought breaking the plastic welds on the bucket was a huge pain. What made my decision to do the drop in is that my stock lpfp was the original one (from 2007) and I did not just want a bandaid to mask its potential problems.

If you do not run into any problems or if I had to do this again I would say it probably takes 3 hours to get everything right for the drop in. For me it probably took 5 hours because I couldnt get the screw cover on top of the tank off, then I struggled with the bucket for awhile etc. Hopefully someone that did the inline option can chime in on their install

tinnsoldaten · 05-27-2013, 10:25 AM

For opening the ring on fuel tank with ease :

http://www.e90post.com/forums/showthread.php?t=845609

To brake the plastic weld I had great success with using a long bladed kitchen knife with a very thin blade , put the tip of the knife between bucket and bracket and gave a small tap with hammer , all came off easily.

cleex024 · 05-27-2013, 10:35 AM

I just don't understand the one in series how it can supply the additional fuel when the oe one can't supply it. If the oe one can only put out 90lph and our system needs 100lph how does the inline one pull more?

3000GT MR · 05-27-2013, 11:13 AM

Quote:

Originally Posted by cleex024

I just don't understand the one in series how it can supply the additional fuel when the oe one can't supply it. If the oe one can only put out 90lph and our system needs 100lph how does the inline one pull more?

Think of it as running Batterys in series. Each one bumps up. The fuel pump is designed to flow a certain amount at a certain pressure. For example 90lph at 60psi. The pump may be capable of flowing 180lph at 30psi. And so on. Those are just random numbers but there is science behind it. So you could have the higher flow feeding the pump which will output the higher pressure to the hpfp.

cleex024 · 05-27-2013, 12:13 PM

So I guess I'm going with the inline one

05-22-2013, 07:11 PM	#1
09BMW335i Second Lieutenant 29 Rep 259 Posts Drives: 2009 335i Join Date: Nov 2012 Location: northwest burbs, IL iTrader: (0) Garage List 2015 Ford Explorer ... [0.00] 2009 335I [0.00]	fuel pump alarm and updated LPFP Line in WALBRO installed a Walbro LPFP 455 I now get an intermittent Fuel pump alarm on the system check but i dont recieve a code when i try and read it __________________ 09 335i Sport --MHD (Tune by Wedge )--Inlet System by Trueform Technologies --Tial BOV--Macht Schnell Catless Downpipes--AMS FMIC--Walbro 455 LPFP--HPF Gen2 Exhaust--SPEC Stage 3+ clutch / billet steel flywheel-- Last edited by 09BMW335i; 05-24-2013 at 03:49 PM..
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05-23-2013, 08:33 AM	#3
09BMW335i Second Lieutenant 29 Rep 259 Posts Drives: 2009 335i Join Date: Nov 2012 Location: northwest burbs, IL iTrader: (0) Garage List 2015 Ford Explorer ... [0.00] 2009 335I [0.00]	raining out so i didn't have a chance to log. However i did add E85 (4 gallons) and i haven't had a check service light in 30 miles.. __________________ 09 335i Sport --MHD (Tune by Wedge )--Inlet System by Trueform Technologies --Tial BOV--Macht Schnell Catless Downpipes--AMS FMIC--Walbro 455 LPFP--HPF Gen2 Exhaust--SPEC Stage 3+ clutch / billet steel flywheel--
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05-24-2013, 03:04 PM	#4
09BMW335i Second Lieutenant 29 Rep 259 Posts Drives: 2009 335i Join Date: Nov 2012 Location: northwest burbs, IL iTrader: (0) Garage List 2015 Ford Explorer ... [0.00] 2009 335I [0.00]	Ok pulled out the LPFP and indeed had a line that burst. Here is the updated Version of what was done. see pic below. however I now have the red triangle from death saying i have a fuel pump issue. any thoughts (Thanks A-Spec for the new design) __________________ 09 335i Sport --MHD (Tune by Wedge )--Inlet System by Trueform Technologies --Tial BOV--Macht Schnell Catless Downpipes--AMS FMIC--Walbro 455 LPFP--HPF Gen2 Exhaust--SPEC Stage 3+ clutch / billet steel flywheel--
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05-24-2013, 10:20 PM	#5
Tony@vargasturbotech Banned 136 Rep 1,202 Posts Drives: N54 Join Date: Aug 2012 Location: USA iTrader: (0)	Ok, so you are running the single walbro in the tank? If you do, only use high pressure hose, the other stuff that is rated for fuel injection wont cut it. Almost every car we have installed a LPFP upgrade in, inline, or intank walbro throws a phantom LPFP code and sometimes gives the fuel pump warning. Its either from the extra current the dual pumps are pulling or in the case of the single walbro, could be a couple of things. Stage 3 car has it sometimes too with the parallel set up. My suggestion is, live with the occasional warning as you know why it is there. If you really hate it, I am sure someone can figure out exactly what causes it. We just didn't take the time as I said we know why it was there.
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05-25-2013, 05:19 AM	#7
tinnsoldaten Captain 34 Rep 715 Posts Drives: e92 335i coupe Join Date: Dec 2008 Location: Bergen iTrader: (1)	I believe the pump is not a ON/OFF pump , thats why relay wont do. Im not sure , thought I seen info about it somewhere. __________________ Vargas S2 turbos\|VAC S3 Cylinder head\|RR DPs\|RR MPs\|Supersprint X pipe\|Remus Quad Sport mufflers\|aFe Stage 2 Si with scoops\|Forge DVs\|ER CP\|BMS meth elbow\|Aquamist HFS-4\|Walbro 450 E85 LPFP\|AA FMIC\|BMS OCC\|MHD\|P3 Boost Gauge\|Ohlins Road & Track + camberplates\|M3 sways F/R+ Ground control endlinks\|Vorsteiner v303 19"\|Michelin PS2 sport\|Quaife LSD\|Vorsteiner V35 CF hood\|CF CLS trunk\|Duke Dynamics quad diffusor
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05-25-2013, 09:31 AM	#8
09BMW335i Second Lieutenant 29 Rep 259 Posts Drives: 2009 335i Join Date: Nov 2012 Location: northwest burbs, IL iTrader: (0) Garage List 2015 Ford Explorer ... [0.00] 2009 335I [0.00]	Thanks for the input from all will look more into it __________________ 09 335i Sport --MHD (Tune by Wedge )--Inlet System by Trueform Technologies --Tial BOV--Macht Schnell Catless Downpipes--AMS FMIC--Walbro 455 LPFP--HPF Gen2 Exhaust--SPEC Stage 3+ clutch / billet steel flywheel--
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05-25-2013, 09:33 AM	#9
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	Pump runs on pwm __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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05-25-2013, 08:04 PM	#11
._. Colonel 74 Rep 2,353 Posts Drives: BMW Join Date: Jun 2009 Location: Miami iTrader: (15)	what's the part number on that y fitting?
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05-26-2013, 09:14 AM	#12
09BMW335i Second Lieutenant 29 Rep 259 Posts Drives: 2009 335i Join Date: Nov 2012 Location: northwest burbs, IL iTrader: (0) Garage List 2015 Ford Explorer ... [0.00] 2009 335I [0.00]	Let me look and see if I have it __________________ 09 335i Sport --MHD (Tune by Wedge )--Inlet System by Trueform Technologies --Tial BOV--Macht Schnell Catless Downpipes--AMS FMIC--Walbro 455 LPFP--HPF Gen2 Exhaust--SPEC Stage 3+ clutch / billet steel flywheel--
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05-27-2013, 09:57 AM	#16
cleex024 Lieutenant Colonel 104 Rep 1,529 Posts Drives: 2008 BMW 335i Coupe Join Date: Mar 2011 Location: Woodbridge iTrader: (2)	So was this an easy diy? Deciding either between this or the inline addition one in series __________________ Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
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05-27-2013, 10:25 AM	#18
tinnsoldaten Captain 34 Rep 715 Posts Drives: e92 335i coupe Join Date: Dec 2008 Location: Bergen iTrader: (1)	For opening the ring on fuel tank with ease : http://www.e90post.com/forums/showthread.php?t=845609 To brake the plastic weld I had great success with using a long bladed kitchen knife with a very thin blade , put the tip of the knife between bucket and bracket and gave a small tap with hammer , all came off easily. __________________ Vargas S2 turbos\|VAC S3 Cylinder head\|RR DPs\|RR MPs\|Supersprint X pipe\|Remus Quad Sport mufflers\|aFe Stage 2 Si with scoops\|Forge DVs\|ER CP\|BMS meth elbow\|Aquamist HFS-4\|Walbro 450 E85 LPFP\|AA FMIC\|BMS OCC\|MHD\|P3 Boost Gauge\|Ohlins Road & Track + camberplates\|M3 sways F/R+ Ground control endlinks\|Vorsteiner v303 19"\|Michelin PS2 sport\|Quaife LSD\|Vorsteiner V35 CF hood\|CF CLS trunk\|Duke Dynamics quad diffusor
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05-27-2013, 10:35 AM	#19
cleex024 Lieutenant Colonel 104 Rep 1,529 Posts Drives: 2008 BMW 335i Coupe Join Date: Mar 2011 Location: Woodbridge iTrader: (2)	I just don't understand the one in series how it can supply the additional fuel when the oe one can't supply it. If the oe one can only put out 90lph and our system needs 100lph how does the inline one pull more? __________________ Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
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05-27-2013, 12:13 PM	#21
cleex024 Lieutenant Colonel 104 Rep 1,529 Posts Drives: 2008 BMW 335i Coupe Join Date: Mar 2011 Location: Woodbridge iTrader: (2)	So I guess I'm going with the inline one __________________ Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
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