Tuned G80 blows throttle body

Tall Tom Cruise · 11-14-2023, 06:13 PM

Did a light/moderate pull, car chimed 10 seconds afterwards and lit up like a mf Christmas tree. Full limp mode. Rear diff locked warning, CEL, and the car wouldn't go past 1,200 RPM or go faster than 2 mph. Called a flatbed. At the time, I legit thought I blew up the engine. A private shop diagnosed and fixed it. Turns out all that the car needed was a brand new OEM throttle body. It's a $910 part + 8 hours of labor (bummer).

Mods: tons, but the drivetrain ones are:
-drop in air filters + charcoal screen delete
-catless dp
-catless R44 titanium exhaust
-DME tuning Stage 2 tune (pushing about 570whp on 91 octane)

Codes:
- 100227: DME throttle valve activation short circuit
- D35DC3: DSC signal (wheel torque drivetrain actual, invalid, transmitter DME/DEE/CCU
- 100229: DME internal fault (throttle valve activation)

Haven't heard of this happening to anyone else so I wanted to share and provide a data point for you guys. Shop Tech said that running higher boost + beating on the car is ultimately what caused it. My m3 is a 6mt and has 37k miles. I tuned it at 32k ish.

GrannyShiftG80 · 11-14-2023, 06:51 PM

Damn thank you for sharing

markoz28 · 11-14-2023, 07:09 PM

Wow that’s crazy! These cars are built to be beaten on. I’d say it’s a fluke. It’s not like the increase boost put pressure on the throttle body to break it.

forcefed · 11-14-2023, 07:27 PM

Quote:

Originally Posted by Tall Tom Cruise

Shop Tech said that running higher boost + beating on the car is ultimately what caused it.

All right folks so according to that shop tech no modding of any kind and drive it like a grandma from now on...

Bostro · 11-14-2023, 09:06 PM

Quote:

Originally Posted by forcefed

All right folks so according to that shop tech no modding of any kind and drive it like a grandma from now on...

Interesting … how tune or mods of any sort be a direct cause of the throttle body to fail? Im not expert but Im confused.

Limegrntaln · 11-14-2023, 09:11 PM

What physical damage did you see on the throttle body, if any?

forcefed · 11-14-2023, 09:28 PM

Quote:

Originally Posted by Bostro

Interesting … how tune or mods of any sort be a direct cause of the throttle body to fail? Im not expert but Im confused.

It was just bad luck that it failed.

Info@mad-us.com · 11-15-2023, 12:01 AM

+1 for bad luck.

Indo Rider · 11-16-2023, 07:02 AM

Gonna need pics of how blown this TB is. Or are those NSFW?

TopJimmy · 11-16-2023, 08:08 AM

Need pix to see what failed.
That would benefit all of us.

a1gio2 · 11-16-2023, 10:26 AM

Sounds like a catch all solution to a problem that likely impacted a small component of the TB.

mike@x-ph.com · 11-16-2023, 10:45 AM

Given that this is the first time such an issue is reported, it seems likely that it could be a matter of bad luck or a defective part

Lakeside · 01-19-2024, 11:45 AM

My G80 is bone stock and has been at the dealership for ~2 weeks after popping a check engine light. I just got off the phone after finding that all the tests BMW NA have made them run point to a failed throttle body. I'm at roughly 5k miles on the vehicle and it had performed normally until that point, and I never felt anything wrong.

They have it ordered and will swap next week.

docjavier · 01-20-2024, 10:52 AM

Quote:

Originally Posted by Lakeside

My G80 is bone stock and has been at the dealership for ~2 weeks after popping a check engine light. I just got off the phone after finding that all the tests BMW NA have made them run point to a failed throttle body. I'm at roughly 5k miles on the vehicle and it had performed normally until that point, and I never felt anything wrong.

They have it ordered and will swap next week.

Can you post the codes?

Lakeside · 02-13-2024, 02:54 PM

Quote:

Originally Posted by docjavier

Can you post the codes?

I didn't pull them myself and didn't ask for them. The dealer had the car almost a month, was crazy. It's definitely fixed though. I went on a car club trip with a McLaren and some other super cars. It's definitely working well now!

The problem for mine was intermittent so they had some testing issue and I think had to get info and gear from Germany, as well as needing to order the throttle body and associated hardware.

(Sorry for the delay, haven't been on the forum in a bit.)

josephx66 · 02-13-2024, 04:09 PM

Blew the welds on the intake ay??

11-14-2023, 06:13 PM	#1
Tall Tom Cruise Lieutenant 1002 Rep 569 Posts Drives: '21 G80 M3 Join Date: Apr 2018 Location: Orange County, CA iTrader: (1)	Tuned G80 blows throttle body Did a light/moderate pull, car chimed 10 seconds afterwards and lit up like a mf Christmas tree. Full limp mode. Rear diff locked warning, CEL, and the car wouldn't go past 1,200 RPM or go faster than 2 mph. Called a flatbed. At the time, I legit thought I blew up the engine. A private shop diagnosed and fixed it. Turns out all that the car needed was a brand new OEM throttle body. It's a $910 part + 8 hours of labor (bummer). Mods: tons, but the drivetrain ones are: -drop in air filters + charcoal screen delete -catless dp -catless R44 titanium exhaust -DME tuning Stage 2 tune (pushing about 570whp on 91 octane) Codes: - 100227: DME throttle valve activation short circuit - D35DC3: DSC signal (wheel torque drivetrain actual, invalid, transmitter DME/DEE/CCU - 100229: DME internal fault (throttle valve activation) Haven't heard of this happening to anyone else so I wanted to share and provide a data point for you guys. Shop Tech said that running higher boost + beating on the car is ultimately what caused it. My m3 is a 6mt and has 37k miles. I tuned it at 32k ish.
	Appreciate 6 GrannyShiftG801295.00 snyder268149.50 djbang21.00 evidence202.00 M4Tejas788.00 hellcat2m4224.00 Tweet Quote

11-14-2023, 06:51 PM	#2
GrannyShiftG80 Captain 1295 Rep 880 Posts Drives: G20 330i, G80 M3 6MT Join Date: Aug 2014 Location: Canada iTrader: (0)	Damn thank you for sharing __________________ 2022 G80 M3 6MT 2020 G20 330i xDrive 2011 E90 335i xDrive 1996 E36 318i
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11-14-2023, 07:09 PM	#3
markoz28 First Lieutenant 224 Rep 376 Posts Drives: BMW 2017 340i, BMW 2020 M340i, Join Date: May 2021 Location: South TX iTrader: (1)	Wow that’s crazy! These cars are built to be beaten on. I’d say it’s a fluke. It’s not like the increase boost put pressure on the throttle body to break it.
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11-14-2023, 09:11 PM	#6
Limegrntaln Major General 13475 Rep 6,962 Posts Drives: 2022 DG/BLk xDrive M4C Wk 34 Join Date: Mar 2008 Location: Sacramento Area iTrader: (3) Garage List 2022 G82 M4 Competi ... [9.23]	What physical damage did you see on the throttle body, if any? __________________ 2022 DravitGrau /Black Full Merino M4 Competition M xDrive / Production Week 34/ Delivered 10/19/21/ IG: dravit_m4_comp YT: G Dubyou
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11-15-2023, 12:01 AM	#8
Info@mad-us.com BimmerPost Supporting Vendor 1924 Rep 4,923 Posts Drives: bmw Join Date: Mar 2021 Location: Mad-us.com iTrader: (0)	+1 for bad luck. __________________ - Click Here Performance Parts For Your Bmw At Crazy Low Prices! Email: info@mad-us.com
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11-16-2023, 07:02 AM	#9
Indo Rider Captain 555 Rep 735 Posts Drives: 135 Join Date: Apr 2012 Location: United States iTrader: (0)	Gonna need pics of how blown this TB is. Or are those NSFW?
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11-16-2023, 08:08 AM	#10
TopJimmy Major General 5463 Rep 5,155 Posts Drives: 2023 M3 Comp xDrive Join Date: Jul 2019 Location: Chester County, PA iTrader: (5)	Need pix to see what failed. That would benefit all of us. __________________ '18 F80 Base 6MT \| '19 F82 Exec DCT \| '18 F82 Comp Exec DCT \| '23 G80cx
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11-16-2023, 10:26 AM	#11
a1gio2 Private First Class 215 Rep 149 Posts Drives: M4 Join Date: Jul 2014 Location: NY iTrader: (0)	Sounds like a catch all solution to a problem that likely impacted a small component of the TB.
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11-16-2023, 10:45 AM	#12
mike@x-ph.com BimmerPost Supporting Vendor 24208 Rep 190,807 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Given that this is the first time such an issue is reported, it seems likely that it could be a matter of bad luck or a defective part __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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01-19-2024, 11:45 AM	#13
Lakeside Lieutenant 400 Rep 453 Posts Drives: 2003 BMW 330i Join Date: Nov 2021 Location: Wildwood, MO iTrader: (0)	My G80 is bone stock and has been at the dealership for ~2 weeks after popping a check engine light. I just got off the phone after finding that all the tests BMW NA have made them run point to a failed throttle body. I'm at roughly 5k miles on the vehicle and it had performed normally until that point, and I never felt anything wrong. They have it ordered and will swap next week. __________________ 2003 330i (Titanium Silver) 2023 M3 Competition xDrive (Skyscraper Grey)
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02-13-2024, 04:09 PM	#16
josephx66 Private 78 Rep 87 Posts Drives: BMW M3 Competition Join Date: Jun 2023 Location: Los Angeles iTrader: (0)	Blew the welds on the intake ay??
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