HPFP/Injector/O2 Sensor?

BMW DRIVEN · 01-25-2022, 10:37 PM

Sooooooo, I’m data logging my newly flashed stage 93 OTS map and on the second pull I notice a hesitation at the top of rpm band. I lift off the gas and the car starts shaking and power is decreased, but no limp mode. As I’m sitting at the light I notice an increase smell in gas ( an overbearing amount) and my car stalls. I was able to start it back up and make it home.

Iam thinking hpfp but I thought they were fixed on F30/F32’s. If anyone has any insight please comment below.

n55david · 01-26-2022, 03:54 AM

You need to post a log. Could be a ton of things completely unrelated to the hpfp.

MadToy · 01-26-2022, 06:25 AM

Check your charge pipe first.

thejeremyman9 · 01-26-2022, 11:24 AM

Collect log, provide mod list, mileage, etc etc.

BMW DRIVEN · 01-26-2022, 12:51 PM

66K Miles. CP, DP, IC, Intake, exhaust. Stage 2 93 Bootmod3.

https://www.bootmod3.net/log?id=61f0...0b437fa6d2b9a9

BMW DRIVEN · 01-26-2022, 12:52 PM

I did. I have an aftermarket CP and connection is good.

MadToy · 01-26-2022, 01:52 PM

You running a 93 tune on CA 91 octane?

BMW DRIVEN · 01-26-2022, 03:24 PM

Quote:

Originally Posted by MadToy

You running a 93 tune on CA 91 octane?

Absolutely not. lol

BMW DRIVEN · 01-26-2022, 03:25 PM

Flashed back to stock. Started the car and it threw these codes. Now, I'm possibly thinking injectors.

thejeremyman9 · 01-26-2022, 04:03 PM

Quote:

Originally Posted by BMW DRIVEN

Flashed back to stock. Started the car and it threw these codes. Now, I'm possibly thinking injectors.

Swap cylinder 6 coil and/or plug to cylinder 1 and see if the problem follows the coil/plug.

thejeremyman9 · 01-26-2022, 04:05 PM

Quote:

Originally Posted by BMW DRIVEN

66K Miles. CP, DP, IC, Intake, exhaust. Stage 2 93 Bootmod3.

https://www.bootmod3.net/log?id=61f0...0b437fa6d2b9a9

Your HPFP pressure is a bit off target in the log and dips in the upper RPM. I would still try swapping a coil/plug first, though, before trying anything with injectors

BMW DRIVEN · 01-26-2022, 04:08 PM

Quote:

Originally Posted by thejeremyman9

Your HPFP pressure is a bit off target in the log and dips in the upper RPM. I would still try swapping a coil/plug first, though, before trying anything with injectors

I saw that dip too. Plugs are only have 13K miles. Coils 18K.

MadToy · 01-26-2022, 04:40 PM

While you're there, I would pull plug 6 to see if it's wet with fuel.

thejeremyman9 · 01-26-2022, 07:01 PM

Quote:

Originally Posted by MadToy

While you're there, I would pull plug 6 to see if it's wet with fuel.

I would swap both coil and plug from 6 to 1. Then if problem follows to 1, swap coil from 1 to 2 (but dont move plug). 6 is the hardest to get to so you want to move both coil and plug at the same time.

Eschmacher · 01-26-2022, 09:08 PM

100% agree, you need to check coilpacks first.

BMW DRIVEN · 01-27-2022, 05:28 PM

Injector #6 has failed. It was stuck wide open. Spark plug was soaked in gasoline.

F32_Sierra · 01-29-2022, 04:36 AM

I was bout to bet 100% injectors. I just did mine and had the same symptoms. I'd recommend changing your spark plugs too since it most likely fouled it.

BMW DRIVEN · 01-30-2022, 03:39 PM

Quote:

Originally Posted by F32_Sierra

I was bout to bet 100% injectors. I just did mine and had the same symptoms. I'd recommend changing your spark plugs too since it most likely fouled it.

Yeah, I asked my shop about changing the plugs and they said it wasn't necessary.

I'm going to change then soon anyways.

01-25-2022, 10:37 PM	#1
BMW DRIVEN Instagram: @bmwdriven_ 51 Rep 119 Posts Drives: BMW 435i Join Date: May 2020 Location: SoCal iTrader: (0)	HPFP/Injector/O2 Sensor? Sooooooo, I’m data logging my newly flashed stage 93 OTS map and on the second pull I notice a hesitation at the top of rpm band. I lift off the gas and the car starts shaking and power is decreased, but no limp mode. As I’m sitting at the light I notice an increase smell in gas ( an overbearing amount) and my car stalls. I was able to start it back up and make it home. Iam thinking hpfp but I thought they were fixed on F30/F32’s. If anyone has any insight please comment below. Attached Images Last edited by BMW DRIVEN; 01-26-2022 at 04:46 PM..
	Appreciate 0 Tweet Quote

01-26-2022, 03:54 AM	#2
n55david Check out my Youtube @n55david! 1296 Rep 3,533 Posts Drives: 2017 m240i, 2015 X3 x35i Join Date: Aug 2018 Location: Michigan USA iTrader: (0) Garage List 2017 m240i xDrive [0.00] 2015 X3 x35i [0.00] 2015 335i xdrive [0.00]	You need to post a log. Could be a ton of things completely unrelated to the hpfp. __________________ 2017 m240i xDrive 10.99@122.86mph bootmod3 stage 2+ ots 2015 335i xDrive 10.95@124.99mph w/bm3 - SOLD 2015 X3 x35i pwg 12.96 catless w/bm3 stage 2 93 ots IG: @n55david For pics and updates! Youtube: @ n55david For videos or Racing etc
	Appreciate 0 Quote

01-26-2022, 06:25 AM	#3
MadToy Second Lieutenant 64 Rep 263 Posts Drives: '18 340i Xdrive Join Date: Jul 2014 Location: Mooresville, NC iTrader: (1)	Check your charge pipe first.
	Appreciate 0 Quote

01-26-2022, 11:24 AM	#4
thejeremyman9 Major General 4364 Rep 7,606 Posts Drives: 2015 BMW 335i Join Date: May 2019 Location: Cali iTrader: (0)	Collect log, provide mod list, mileage, etc etc.
	Appreciate 0 Quote

01-26-2022, 12:51 PM	#5
BMW DRIVEN Instagram: @bmwdriven_ 51 Rep 119 Posts Drives: BMW 435i Join Date: May 2020 Location: SoCal iTrader: (0)	66K Miles. CP, DP, IC, Intake, exhaust. Stage 2 93 Bootmod3. https://www.bootmod3.net/log?id=61f0...0b437fa6d2b9a9
	Appreciate 0 Quote

01-26-2022, 12:52 PM	#6
BMW DRIVEN Instagram: @bmwdriven_ 51 Rep 119 Posts Drives: BMW 435i Join Date: May 2020 Location: SoCal iTrader: (0)	I did. I have an aftermarket CP and connection is good.
	Appreciate 0 Quote

01-26-2022, 01:52 PM	#7
MadToy Second Lieutenant 64 Rep 263 Posts Drives: '18 340i Xdrive Join Date: Jul 2014 Location: Mooresville, NC iTrader: (1)	You running a 93 tune on CA 91 octane? __________________ 2018 340i F30 Xdrive
	Appreciate 0 Quote

01-26-2022, 03:25 PM	#9
BMW DRIVEN Instagram: @bmwdriven_ 51 Rep 119 Posts Drives: BMW 435i Join Date: May 2020 Location: SoCal iTrader: (0)	Flashed back to stock. Started the car and it threw these codes. Now, I'm possibly thinking injectors. Attached Images
	Appreciate 0 Quote

01-26-2022, 04:40 PM	#13
MadToy Second Lieutenant 64 Rep 263 Posts Drives: '18 340i Xdrive Join Date: Jul 2014 Location: Mooresville, NC iTrader: (1)	While you're there, I would pull plug 6 to see if it's wet with fuel.
	Appreciate 0 Quote

01-26-2022, 09:08 PM	#15
Eschmacher Car Hypochondriac 335 Rep 901 Posts Drives: 2014 335i M-Sport Estoril Blue Join Date: Feb 2017 Location: Sterling, VA iTrader: (0) Garage List 2014 BMW 335i [0.00]	100% agree, you need to check coilpacks first. __________________ Power mods: VRSF IC/Catted DP - FTP CP/BP - AFE Cat-back - BM3/XHP - Dorch S2 Handling mods: Koni yellow - Eibach prokit - Millway street - M Performance LSD - M3 brakes - EBC bluestuff Exterior: Euro LCI tail lights - Shitty ECS CF spoiler - Chinese M performance diffuser Interior: Bavsound stage 1 and subs - custom trunk sub by Mike1327
	Appreciate 0 Quote

01-27-2022, 05:28 PM	#16
BMW DRIVEN Instagram: @bmwdriven_ 51 Rep 119 Posts Drives: BMW 435i Join Date: May 2020 Location: SoCal iTrader: (0)	Injector #6 has failed. It was stuck wide open. Spark plug was soaked in gasoline. Last edited by BMW DRIVEN; 01-27-2022 at 05:36 PM..
	Appreciate 1 n55david1295.50 Quote

01-29-2022, 04:36 AM	#17
F32_Sierra Mechanical/Automation Engineer 12 Rep 25 Posts Drives: 2014 435i M-sport Join Date: Jan 2022 Location: Surprise, Arizona iTrader: (0)	I was bout to bet 100% injectors. I just did mine and had the same symptoms. I'd recommend changing your spark plugs too since it most likely fouled it.
	Appreciate 0 Quote