[DE92an]

would like someone to look over and verify i think my lpfp is on its way out i see the psi dip down to 49 sometimes, log posted

http://www.datazap.me/u/dejane92/tes...-14-18&solo=11

[jtswole]

I have a Walbro 255 inline pump, w/ the lpfp bucket for sale.

$250 shipped.

[feuer]

What fuel are you running? On Ethanol mix depending on the fuel scalar the ECU might be reducing the fuel flow. Does it throw any fault codes. In general pressure bellow 50 is not good. Should be above 70.

[DE92an]

Originally Posted by feuer

What fuel are you running? On Ethanol mix depending on the fuel scalar the ECU might be reducing the fuel flow. Does it throw any fault codes. In general pressure bellow 50 is not good. Should be above 70.

just pump 94 and no codes are thrown regarding the pump but yes I thought below 70 was it on its way out

[Chris@BoostConcepts]

If that is straight pump gas, then I would say that the LPFP is on its way out. should be rock solid on pump gas without any drop. Looks like it is time for a replacement or upgrade!

Chris

[pysical]

You can look at one of my previous threads..

I was having HPFP tanking and my LPFP was dipping into mid 40's. I bought a LPFP from Chris@BoostConcepts and my fueling issue is perfect.

[DE92an]

ah now it's the perfect excuse to buy some upgraded parts! thanks everyone for the help

[feuer]

Originally Posted by DejanE92

ah now it's the perfect excuse to buy some upgraded parts! thanks everyone for the help

Nema problem! Check on Ebay too. I have read quite few positive reviews on $99 pumps that make and keep hight pressure.

[bigdnno98]

Anyone know how to make the car throw a LPFP code? My logs are showing 48-52psi at WOT so I know my pump is dying. It's not throwing a code though so I can't warranty it yet. Can I just pull the plug to it? I have t really messed with that pump at all.

[Chris@BoostConcepts]

Originally Posted by feuer

Nema problem! Check on Ebay too. I have read quite few positive reviews on $99 pumps that make and keep hight pressure.

That is not a good idea.. those are just the pump itself and connecting everything without having issues is not a task for the feint hearted and only a few have been successful in the implementation. I would not recommend attempting a DIY without the correct parts..

Chris

[feuer]

Originally Posted by Chris@BoostConcepts

That is not a good idea.. those are just the pump itself and connecting everything without having issues is not a task for the feint hearted and only a few have been successful in the implementation. I would not recommend attempting a DIY without the correct parts..

Chris

I don't know what are you talking about. Is the whole bucket. Complete assembly.

[pysical]

I would go with a upgraded pump. Leaves more room in the future.

[Chris@BoostConcepts]

Originally Posted by feuer

I don't know what are you talking about. Is the whole bucket. Complete assembly.

Apologies, When I saw 499 pump I thought you were referring to the ebay walbro pumps as in trying to upgrade the pump bucket on his own.. I did not realize you were referring to a complete used or aftermarket stock bucket assembly. that was what my comment was referring too.. my bad!

Chris

[F80Mmm]

Originally Posted by pysical

You can look at one of my previous threads..

I was having HPFP tanking and my LPFP was dipping into mid 40's. I bought a LPFP from Chris@BoostConcepts and my fueling issue is perfect.

+1 for Chris at Boost Concepts, his customer service is top notch and has very detailed step-by-step instructions to install the kit on your own with a quality design and all the materials you need. I even made a couple of rookie errors and he was there to help and responded super fast.

[DE92an]

So just an update Ive installed a new stage 2 lpfp and i did 4 logs today but the lpfp still seems to dip low to 59psi. could a brand new hpfp be bad i got it installed last year and drove with it maybe 3 month before the car was parked or would i be better replacing the lpfp sensor ? Ive attached the most recent log.

http://www.datazap.me/u/dejane92/new...14-18&hg=13-12

[Chris@BoostConcepts]

I just reviewed your log and if you are referring to the peaks and valleys that isn't indicative of your actual pumps performance. basically a mean avergae of those would be where the performance of the pump would be.. there is a decent swing on some cars due to whatever reason, most likely a combination of both the fuel pressure regulator, the pulses from the HPFP inlet side etc.. your LPFP looks perfectly fine. in the datazap log you posted.

you can actually see the requested lpfp pressure line and it draws a straight line through the center of all the peaks and valleys of the datalog. you are perfectly fine.. the fuel pump controller may learn in a little bit more as well as it has more time and varying conditions to gather data and adjust. I wouldn't be surprised if after a week or two those swings were much much smaller as the controller voltage output is closer to where it needs to be for that pumps flow.

Chris

[DE92an]

Yea i was thinking that today at work too ill give it a week to adjust and log it again but im sure it'll be okay must of been the gas fumes that made me worry lol thanks Chris !