Spark plug and ignition coil

alddiem415 · 11-17-2017, 11:05 AM

Im planning on buying MHD stage 1 for my DD 2011 335i xdrive N55 with 53,xxx miles.

I want to change my plugs and coil before doing MHD

1. What spark plugs and ignition coil should I get?
2. What gapped on the plugs?
3. Where is the best place to buy?
4. What other things i need to check/replace before installing MhD

Also,I’ll be doing Catless DP after installing MHD

I appreciate any suggestions

9krpmrx8 · 11-17-2017, 11:17 AM

Stock Bosch ZR5TPP33S at stock gap and stock GN10571 Delphi coils.

Nebo · 11-17-2017, 12:42 PM

Quote:

Originally Posted by 9krpmrx8

Stock Bosch ZR5TPP33 at stock gap and stock GN10571 Delphi coils.

I have a 2011 N55 and I believe the PN is actually ZR5TPP33S. Someone correct me if I'm wrong.

9krpmrx8 · 11-17-2017, 03:18 PM

No you're right, I forgot the S.

alddiem415 · 11-17-2017, 03:19 PM

How about NGK 95770 at .022 gapped and eldor coil?

weehe126 · 11-17-2017, 08:06 PM

Quote:

Originally Posted by alddiem415

How about NGK 95770 at .022 gapped and eldor coil?

Been working for me, but you can probably keep the gap stock at that power level.

alddiem415 · 11-17-2017, 11:43 PM

Quote:

Originally Posted by weehe126

Been working for me, but you can probably keep the gap stock at that power level.

Do u suggest just to get bosch plugs and delphi coil?

Aseneph · 11-18-2017, 02:06 AM

Quote:

Originally Posted by alddiem415

Quote:

Originally Posted by weehe126

Been working for me, but you can probably keep the gap stock at that power level.

Do u suggest just to get bosch plugs and delphi coil?

How long do you plan on staying Stage 1?

alddiem415 · 11-18-2017, 08:45 AM

Quote:

Originally Posted by Aseneph

How long do you plan on staying Stage 1?

I’m not sure how long i’ll be on stage 1 but i think for a while.
I’ll be happy to get 350 hp (not whp).
My plan is just DP for now then Probably IC after a year.
I have no plan on doing E mix.. i’ll stay on 93 pump gas.

Supermoon · 11-18-2017, 08:46 AM

What would be the optimal gap for Stage 1+ 93Oct?

weehe126 · 11-18-2017, 08:53 AM

Stock gap unless you are maxing out the stock turbo. Eldor coils have been working for me.

alddiem415 · 11-18-2017, 10:47 AM

Quote:

Originally Posted by weehe126

Stock gap unless you are maxing out the stock turbo. Eldor coils have been working for me.

So what would u recommend?
Bosck plugs with delphi coils or
Bosch plugs with eldor?

I checked fcpeuro and it says ngk and eldor coil doesnt fit 2011 335i xdrive..
Only bosch and oem spark plugs
Delphi and OeM coils

weehe126 · 11-18-2017, 04:17 PM

It doesn't matter. I went eldor because they were cheaper. Pretty sure NGK is also cheaper. I've been running them for over 40k miles with no issues. 30K maxed stock turbo, 10k PS2.

alddiem415 · 11-20-2017, 02:13 AM

Quote:

Originally Posted by weehe126

It doesn't matter. I went eldor because they were cheaper. Pretty sure NGK is also cheaper. I've been running them for over 40k miles with no issues. 30K maxed stock turbo, 10k PS2.

Ngk and eldor are more expensive than bosch and delphi

NRigs · 11-20-2017, 07:47 AM

I am stage 2+ 93 octane on stock plugs / gap and coils. No issues.

dleccord · 11-21-2017, 11:15 PM

Why do you need coils for tune? Plugs should be fine.

NRigs · 11-22-2017, 09:25 AM

Quote:

Originally Posted by dleccord

Why do you need coils for tune? Plugs should be fine.

If they are old it is always good to replace for preventative maintenance

MTK24 · 11-25-2017, 03:18 AM

make sure you get the spark plugs from the dealer. they should have a BMW logo on them.

I bought the BOSCH ZR5TPP33S from a parts store and had misfire issues and felt like the car was kicking back. Went to dealer and bought the OEM plugs and problem solved.

weehe126 · 11-25-2017, 09:43 AM

Lol you do not have to get plugs from the dealer

MTK24 · 11-25-2017, 04:55 PM

Quote:

Originally Posted by weehe126

Lol you do not have to get plugs from the dealer

dealer plugs are different than ZR5TPP33 auto store plugs.

Nebo · 11-25-2017, 05:48 PM

Quote:

Originally Posted by Vampire335i

Quote:

Originally Posted by weehe126

Lol you do not have to get plugs from the dealer

dealer plugs are different than ZR5TPP33 auto store plugs.

The ZR5TPP33S plugs are OEM plugs for the N55. You can use the Bosch ones as I've just changed my plugs two days ago and it runs super smooth.

MTK24 · 11-26-2017, 12:20 PM

Quote:

Originally Posted by Nebo

The ZR5TPP33S plugs are OEM plugs for the N55. You can use the Bosch ones as I've just changed my plugs two days ago and it runs super smooth.

they are not the same quality as the ones when you first buy the car. They are the updated bosch plugs that meet OEM standards. There are a lot of people who used those and ended up having misfires buying the Bosch auto store ones. Then when they bought dealer plugs it went away. (including myself)

OE and OEM in terms of plugs is a big deal. The bosch ZR5TPP33S plugs do not have to pass the BMW quality control tests for that part, and do not have the BMW logo on them. Quality of these parts can vary greatly - they can range between the exact same part as the one that's put on the car on the production line (but minus the BMW logo...), to something that wasn't good enough to pass quality control, so the manufacturer just sells them as OEM.

I rather pay the extra $60 for a better piece of mind.

11-17-2017, 11:05 AM	#1
alddiem415 Private First Class 36 Rep 157 Posts Drives: 2011 335i xdrive Join Date: Dec 2016 Location: 08096 iTrader: (0)	Spark plug and ignition coil Im planning on buying MHD stage 1 for my DD 2011 335i xdrive N55 with 53,xxx miles. I want to change my plugs and coil before doing MHD 1. What spark plugs and ignition coil should I get? 2. What gapped on the plugs? 3. Where is the best place to buy? 4. What other things i need to check/replace before installing MhD Also,I’ll be doing Catless DP after installing MHD I appreciate any suggestions
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11-17-2017, 11:17 AM	#2
9krpmrx8 Clean is the new cool, keep it that way. 808 Rep 1,685 Posts Drives: 11' Alpine White 335i Sedan Join Date: Jan 2016 Location: San Antonio, Texas iTrader: (0)	Stock Bosch ZR5TPP33S at stock gap and stock GN10571 Delphi coils. Last edited by 9krpmrx8; 11-17-2017 at 03:36 PM..
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11-17-2017, 03:18 PM	#4
9krpmrx8 Clean is the new cool, keep it that way. 808 Rep 1,685 Posts Drives: 11' Alpine White 335i Sedan Join Date: Jan 2016 Location: San Antonio, Texas iTrader: (0)	No you're right, I forgot the S.
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11-17-2017, 03:19 PM	#5
alddiem415 Private First Class 36 Rep 157 Posts Drives: 2011 335i xdrive Join Date: Dec 2016 Location: 08096 iTrader: (0)	How about NGK 95770 at .022 gapped and eldor coil?
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11-18-2017, 08:46 AM	#10
Supermoon Lieutenant 166 Rep 429 Posts Drives: 2011 e92 335xi Join Date: Aug 2015 Location: Seoul iTrader: (6) Garage List 2011 BMW 335i xDriv ... [10.00]	What would be the optimal gap for Stage 1+ 93Oct? __________________ 2011 E92 335i xDrive Pure Stage 1 \| DV+ & Inlet \| Injen Intake \| M3 Cowl \| ETS 5" FMIC & CP \| Aquamist HFS4 Direct Port \| CSF Radiator \| Wagner Catted DP \| BMW PE \| Apex FL-5 \| Michelin PS4S \| 335is Engine mount \| SDW Monoball thrust arms \| UUC Swaybars & SS Brake lines \| Bilstein B8 \| Dinan Springs & Shock mounts \| Whiteline RSFB \| M3 Rear Control arms \| Manzo Toe arms \| Wavetrac LSD
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11-18-2017, 08:53 AM	#11
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	Stock gap unless you are maxing out the stock turbo. Eldor coils have been working for me.
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11-18-2017, 04:17 PM	#13
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	It doesn't matter. I went eldor because they were cheaper. Pretty sure NGK is also cheaper. I've been running them for over 40k miles with no issues. 30K maxed stock turbo, 10k PS2.
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11-20-2017, 07:47 AM	#15
NRigs Lieutenant 94 Rep 321 Posts Drives: 2011 BMW 335xi Join Date: Feb 2017 Location: Ma iTrader: (0)	I am stage 2+ 93 octane on stock plugs / gap and coils. No issues. __________________ Current: 2011 BMW 335xi \| Wedge Tuned \| Meth \| VRSF DP \| VRSF 5" Intercooler \| VRSF Chargepipe \| BMS Intake \| xHP Stg 3 Totaled:2014 Audi A4 CTS K04 APR Tuned
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11-21-2017, 11:15 PM	#16
dleccord Captain 99 Rep 840 Posts Drives: 2011 BMW 335i E90 Join Date: Apr 2016 Location: Nelson, New Zealand iTrader: (0)	Why do you need coils for tune? Plugs should be fine.
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11-25-2017, 03:18 AM	#18
MTK24 Lieutenant 485 Rep 599 Posts Drives: 2011 335I X Drive Join Date: Nov 2017 Location: Seattle iTrader: (0)	make sure you get the spark plugs from the dealer. they should have a BMW logo on them. I bought the BOSCH ZR5TPP33S from a parts store and had misfire issues and felt like the car was kicking back. Went to dealer and bought the OEM plugs and problem solved.
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11-25-2017, 09:43 AM	#19
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	Lol you do not have to get plugs from the dealer
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