Changed the plugs and CP.. wow!

m4dbimmer · 10-12-2019, 02:26 PM

Car has 65k on the odo. Been running a Downpipe, BMC filters, and the MHD Stg2+ e30 tune. Over the past few weeks it has been slightly missing up top. So, I figured let's do the plugs, and replace the charge pipe while I'm at it.

Got the NGK 2 step colder plus from BMS (thank you!), found a Doc Racing CP on ebay for 149. The CP fitment was ok at best. The weld was in the way of the bolt, so I could not fit the socket over it, and both pipes are not exactly level with the charge cooler. I'm OCD..

Reset adaptions and took it for a spin.. holy $hit.. not gonna lie, it felt like i added 30hp. Pulls so strong all through the powerband.

Not bad for a couple hundred bucks and a couple hours of labor.

Pic of the old Bosch plugs, and the CPs installed.

allinon72 · 10-12-2019, 06:52 PM

Well if those are stock plugs you're 35k over, so it would make sense that the car runs better.

m4dbimmer · 10-14-2019, 11:32 AM

Quote:

Originally Posted by allinon72

Well if those are stock plugs you're 35k over, so it would make sense that the car runs better.

BMW calls for a plug replacement at 60k, so I wasn't too far off. Think the tighter gap (.20) made a big difference. The extra boost was probably blowing the last ones out at .27.

mike@x-ph.com · 10-14-2019, 11:43 AM

Remonster · 10-14-2019, 12:12 PM

Quote:

Originally Posted by m4dbimmer

BMW calls for a plug replacement at 60k, so I wasn't too far off. Think the tighter gap (.20) made a big difference. The extra boost was probably blowing the last ones out at .27.

60k should be your second spark plug change, they're recommended every 30k for the S55 motor.

Impressive to see stock plugs just now starting to cause noticeable problems after so many miles with higher than stock power levels but it's partly due to the ignition coils being able to work harder to create a solid spark. Running a plug too long will take a long time to show up as misfire but it is also shortening the life of the ignition coil powering it.

allinon72 · 10-14-2019, 12:19 PM

See maintenance schedule below.

m4dbimmer · 10-14-2019, 12:23 PM

Good find! Everywhere I looked it said 60k. Too bad it's such a PITA to change them..

gspannu · 10-14-2019, 12:44 PM

Quote:

Originally Posted by allinon72

See maintenance schedule below.

Can you please attach the original document/ user manual?

TheirThere · 10-14-2019, 10:01 PM

Quote:

Originally Posted by m4dbimmer

Too bad it's such a PITA to change them..

how long did it take you?

Boostin FD · 10-15-2019, 07:20 AM

Quote:

Originally Posted by allinon72

See maintenance schedule below.

Does that mean, it'll blow up after 60k, or time to sell it

m4dbimmer · 10-15-2019, 01:53 PM

Quote:

Originally Posted by TheirThere

how long did it take you?

First attempt, about 1.5hrs to get to the plugs while carefully taking my time. I could probably do it in 45 or less now that I'm familiar with the process.

Not hard at all, just time consuming.. lot's of layers.

theweebabySeamus · 11-09-2019, 11:29 AM

Quote:

Originally Posted by m4dbimmer

First attempt, about 1.5hrs to get to the plugs while carefully taking my time. I could probably do it in 45 or less now that I'm familiar with the process.

Not hard at all, just time consuming.. lot's of layers.

Looked like it when I checked the DIYs. Good thing its only every 30k.

allinon72 · 11-09-2019, 08:08 PM

Quote:

Originally Posted by theweebabySeamus

Looked like it when I checked the DIYs. Good thing its only every 30k.

Or 36 months. My car has 18k and the plugs have already been changed.

GoodtoGo · 01-20-2020, 02:20 PM

OP, how was the CP fit?

c4ss · 01-21-2020, 09:31 AM

Not sure how you made it to 65k without changing stock plugs, especially running software. My car started complaining at 18k. Impressive in its own right.

1hotrod · 01-24-2020, 01:51 PM

https://www.newtis.info/tisv2/a/en/

Jeff@TopGearSolutions · 01-24-2020, 02:27 PM

Make sense, way overdue with a car that modified.

tomlong · 03-20-2020, 02:45 AM

My goodness ... please also don't forget to change your oil every 30k miles

Bosch should sponsor you

e85m4 · 03-20-2020, 01:51 PM

Lol i change plugs every 5-8k on e85

JoeFromPA · 03-23-2020, 01:03 PM

I always liked this when it’s called “stage 0” tune. Meaning this is the power and drive ability gains just from making sure your car is running right and properly maintained.

I’m at 71k now and bought my own plugs after BMW declined quoting me to replace them without a CBS telling me they should be changed. As far as I can tell these now have 41k on them.

RRedline · 03-24-2020, 10:04 AM

Quote:

Originally Posted by 1hotrod

https://www.newtis.info/tisv2/a/en/

Wow, this is awesome. Has this always been publicly available?

sicck_m4 · 03-25-2020, 10:05 PM

Just did mine today also with NGK 97506. I was experiencing slight misfires WOT. Car feels way better now and very responsive. Just hit 30k. I'm running JB4+BEF E85.

10-12-2019, 02:26 PM	#1
m4dbimmer Private 75 Rep 92 Posts Drives: 2015 M4 Join Date: Jul 2019 Location: Dallas, tx iTrader: (0)	Changed the plugs and CP.. wow! Car has 65k on the odo. Been running a Downpipe, BMC filters, and the MHD Stg2+ e30 tune. Over the past few weeks it has been slightly missing up top. So, I figured let's do the plugs, and replace the charge pipe while I'm at it. Got the NGK 2 step colder plus from BMS (thank you!), found a Doc Racing CP on ebay for 149. The CP fitment was ok at best. The weld was in the way of the bolt, so I could not fit the socket over it, and both pipes are not exactly level with the charge cooler. I'm OCD.. Reset adaptions and took it for a spin.. holy $hit.. not gonna lie, it felt like i added 30hp. Pulls so strong all through the powerband. Not bad for a couple hundred bucks and a couple hours of labor. Pic of the old Bosch plugs, and the CPs installed. Attached Images Last edited by m4dbimmer; 10-12-2019 at 02:34 PM..
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10-12-2019, 06:52 PM	#2
allinon72 Brigadier General 4908 Rep 3,790 Posts Drives: 20' M2C, 23' X1 Join Date: May 2017 Location: Indianapolis, IN iTrader: (2)	Well if those are stock plugs you're 35k over, so it would make sense that the car runs better.
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10-14-2019, 11:43 AM	#4
mike@x-ph.com BimmerPost Supporting Vendor 24083 Rep 190,614 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	__________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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10-14-2019, 12:19 PM	#6
allinon72 Brigadier General 4908 Rep 3,790 Posts Drives: 20' M2C, 23' X1 Join Date: May 2017 Location: Indianapolis, IN iTrader: (2)	See maintenance schedule below. Attached Images
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10-14-2019, 12:23 PM	#7
m4dbimmer Private 75 Rep 92 Posts Drives: 2015 M4 Join Date: Jul 2019 Location: Dallas, tx iTrader: (0)	Good find! Everywhere I looked it said 60k. Too bad it's such a PITA to change them..
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01-20-2020, 02:20 PM	#14
GoodtoGo Second Lieutenant 69 Rep 267 Posts Drives: M3 Join Date: Apr 2011 Location: Chicago iTrader: (6)	OP, how was the CP fit?
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01-21-2020, 09:31 AM	#15
c4ss Private First Class 103 Rep 169 Posts Drives: F80 BMW M3 ZCP 6MT Join Date: Sep 2017 Location: Philly iTrader: (0)	Not sure how you made it to 65k without changing stock plugs, especially running software. My car started complaining at 18k. Impressive in its own right.
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01-24-2020, 01:51 PM	#16
1hotrod New Member 8 Rep 21 Posts Drives: BMW m3 f80 Join Date: Apr 2019 Location: Bay Area iTrader: (1)	https://www.newtis.info/tisv2/a/en/
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01-24-2020, 02:27 PM	#17
Jeff@TopGearSolutions 3441 Rep 79,212 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Make sense, way overdue with a car that modified.
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03-20-2020, 02:45 AM	#18
tomlong Captain 617 Rep 600 Posts Drives: F80 M3 Sedan Join Date: Sep 2019 Location: Chicago iTrader: (0)	My goodness ... please also don't forget to change your oil every 30k miles Bosch should sponsor you __________________ https://www.instagram.com/tomlong/
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03-20-2020, 01:51 PM	#19
e85m4 Lieutenant 73 Rep 437 Posts Drives: M4 Join Date: Sep 2018 Location: NY iTrader: (0)	Lol i change plugs every 5-8k on e85
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03-23-2020, 01:03 PM	#20
JoeFromPA Colonel 1791 Rep 2,995 Posts Drives: '15 AW M3 6MT Stripper Join Date: Aug 2013 Location: SE PA iTrader: (0)	I always liked this when it’s called “stage 0” tune. Meaning this is the power and drive ability gains just from making sure your car is running right and properly maintained. I’m at 71k now and bought my own plugs after BMW declined quoting me to replace them without a CBS telling me they should be changed. As far as I can tell these now have 41k on them.
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03-25-2020, 10:05 PM	#22
sicck_m4 First Lieutenant 168 Rep 319 Posts Drives: F82 Yas Marina M4 Join Date: Aug 2019 Location: Las Vegas iTrader: (2)	Just did mine today also with NGK 97506. I was experiencing slight misfires WOT. Car feels way better now and very responsive. Just hit 30k. I'm running JB4+BEF E85. Attached Images __________________ M4 Yas Marina Blue F32 Estoril Blue
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