New HPFP losing PSI while tuning.

hot-j · 11-24-2016, 05:31 PM

Car is a 1M FBO, stock turbos. HPFP going down to 800psi after 5200 RPM. HPFP is new, and most updated 170 part. LPFP is new stage 2 fuel it and LPFP pressure is consistent. Has anyone else experienced this? Could the new HPFP be bad?

titium · 11-24-2016, 06:35 PM

Quote:

Originally Posted by hot-j

Car is a 1M FBO, stock turbos. HPFP going down to 800psi after 5200 RPM. HPFP is new, and most updated 170 part. LPFP is new stage 2 fuel it and LPFP pressure is consistent. Has anyone else experienced this? Could the new HPFP be bad?

e85?

hot-j · 11-24-2016, 06:48 PM

Sorry... 93

hot-j · 11-25-2016, 10:01 PM

Anyone have any information on what psi is too low?

all4bspinnin · 12-01-2016, 08:44 AM

Do you have a log? What are your AFR's doing?

Post a log with LPFP, HPFP, Lambda 1 & 2

hot-j · 12-01-2016, 07:46 PM

Thanks, I got it sorted. My new HPFP was bad. Amazing they are still having these problems even with all the revisions....

titium · 12-01-2016, 07:52 PM

Quote:

Originally Posted by hot-j

Thanks, I got it sorted. My new HPFP was bad. Amazing they are still having these problems even with all the revisions....

this is pretty normal... its impossible for any manufacturing process to be 100% perfect sounds like your issue, being it was with a new pump is not inherently in the design of the pump but a rather a manufacturing defect you just got unlucky.

the pump ending in 170 is very reliable when compared to any of the previous revisions.

glad you got it all sorted

hot-j · 12-01-2016, 08:18 PM

Thanks. This makes two #170 pumps that have failed on me....

Dackelone · 12-01-2016, 08:36 PM

Quote:

Originally Posted by hot-j

Thanks. This makes two #170 pumps that have failed on me....

Two pumps bought from a BMW dealer ?

I suspect not.

hot-j · 12-01-2016, 10:16 PM

Yes sir. I am a Porsche tech, and don't want some kid straight out of UTI working on my car. Or anyone other than me, working on my car.

Traf · 12-05-2016, 01:53 PM

I confirm, i have a 170# pump and my high pressure is droping very low sometimes.

11-24-2016, 05:31 PM	#1
hot-j First Lieutenant 98 Rep 309 Posts Drives: 1M Join Date: Sep 2015 Location: Boston MA iTrader: (0)	New HPFP losing PSI while tuning. Car is a 1M FBO, stock turbos. HPFP going down to 800psi after 5200 RPM. HPFP is new, and most updated 170 part. LPFP is new stage 2 fuel it and LPFP pressure is consistent. Has anyone else experienced this? Could the new HPFP be bad?
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11-24-2016, 06:48 PM	#3
hot-j First Lieutenant 98 Rep 309 Posts Drives: 1M Join Date: Sep 2015 Location: Boston MA iTrader: (0)	Sorry... 93
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11-25-2016, 10:01 PM	#4
hot-j First Lieutenant 98 Rep 309 Posts Drives: 1M Join Date: Sep 2015 Location: Boston MA iTrader: (0)	Anyone have any information on what psi is too low?
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12-01-2016, 08:44 AM	#5
all4bspinnin Second Lieutenant 38 Rep 206 Posts Drives: 09 135i LeMans Blue/Terracota Join Date: May 2015 Location: Jax, FL iTrader: (0)	Do you have a log? What are your AFR's doing? Post a log with LPFP, HPFP, Lambda 1 & 2
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12-01-2016, 07:46 PM	#6
hot-j First Lieutenant 98 Rep 309 Posts Drives: 1M Join Date: Sep 2015 Location: Boston MA iTrader: (0)	Thanks, I got it sorted. My new HPFP was bad. Amazing they are still having these problems even with all the revisions....
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12-01-2016, 08:18 PM	#8
hot-j First Lieutenant 98 Rep 309 Posts Drives: 1M Join Date: Sep 2015 Location: Boston MA iTrader: (0)	Thanks. This makes two #170 pumps that have failed on me....
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12-01-2016, 10:16 PM	#10
hot-j First Lieutenant 98 Rep 309 Posts Drives: 1M Join Date: Sep 2015 Location: Boston MA iTrader: (0)	Yes sir. I am a Porsche tech, and don't want some kid straight out of UTI working on my car. Or anyone other than me, working on my car.
	Appreciate 0 Quote

12-05-2016, 01:53 PM	#11
Traf First Lieutenant 95 Rep 339 Posts Drives: E82 135i Join Date: Jun 2015 Location: Paris iTrader: (0)	I confirm, i have a 170# pump and my high pressure is droping very low sometimes.
	Appreciate 0 Quote