Changing Spark Plugs Today

bodega_bladerunner · 03-19-2016, 10:07 AM

Morning fellas

As the title states, I'm changing the plugs today with BMW oem replacements and I'm sure they are gapped already, but is that gap sufficient for a JB4 tune? What should the gap be?

Thanks

k04 · 03-19-2016, 10:48 AM

Quote:

Originally Posted by greenc51

Morning fellas

As the title states, I'm changing the plugs today with BMW oem replacements and I'm sure they are gapped already, but is that gap sufficient for a JB4 tune? What should the gap be?

Thanks

OEM plugs are fine for jb4 tune. I was FBO with them. Not sure about gap, but they're 3 prong plugs so not sure if you could even adjust the gap if you'd even want to. I just recently switched to NGK plugs to help with rough idle after using OEM Bosch. Very happy so far.

bodega_bladerunner · 03-19-2016, 12:24 PM

n55 here with the single prong

6MT_Addict · 03-23-2016, 12:59 AM

Quote:

Originally Posted by greenc51

n55 here with the single prong

Single, dual, triple, or quad... It doesn't matter. They all do the same thing, each is just a different approach. Quad/triple prongs should spark more reliably/faster hence why they are good to use on a tuned engine.

Downeaster1 · 04-20-2016, 01:19 PM

They come pre-gapped.

kprocivic · 04-20-2016, 02:00 PM

Quote:

Originally Posted by Downeaster1

They come pre-gapped.

What he said. Just make sure they're torqued correct. I wanna say 18lbft don't quote me though.

Downeaster1 · 04-22-2016, 11:05 AM

Quote:

Originally Posted by kprocivic

What he said. Just make sure they're torqued correct. I wanna say 18lbft don't quote me though.

18Nm

bNks334 · 06-27-2016, 02:18 PM

23nm (per the BMW branded box) = 17ft lbs.

Not sure why so many people are saying to torque them to all these wild numbers...

ShocknAwe · 06-27-2016, 03:54 PM

OEM is fine for mild tune. If pushing things up towards 100hp beyond stock (or beyond), I'd recommend going colder on the plugs.

They come pre-gapped.

Willortiz · 06-27-2016, 05:08 PM

If not pre gapped it should be between between .020-.023 of an inch

03-19-2016, 10:07 AM	#1
bodega_bladerunner Lieutenant 156 Rep 434 Posts Drives: 2015 M4 Join Date: Dec 2015 Location: In the moutains iTrader: (1)	Changing Spark Plugs Today - What Should the Gap Be? Morning fellas As the title states, I'm changing the plugs today with BMW oem replacements and I'm sure they are gapped already, but is that gap sufficient for a JB4 tune? What should the gap be? Thanks
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03-19-2016, 12:24 PM	#3
bodega_bladerunner Lieutenant 156 Rep 434 Posts Drives: 2015 M4 Join Date: Dec 2015 Location: In the moutains iTrader: (1)	n55 here with the single prong
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04-20-2016, 01:19 PM	#5
Downeaster1 BMW Master Tech 587 Rep 850 Posts Drives: E30, E36, E82, E90, F10, F80 Join Date: Jan 2011 Location: SoCal iTrader: (0) Garage List 2015 Aston Martin V ... [0.00] 2010 Lamborghini LP ... [0.00] 1985 Alpina C2 2.7 [0.00] 2017 BMW M3 [0.00] 2008 BMW 128i [10.00] 2013 BMW 135is [0.00] 1992 BMW 325i [0.00]	They come pre-gapped. __________________ 135is #502 of 586 BMW LED Performance Wheel \| OEM FULL Carbon Fiber \| E9X M3 Gauge Cluster \| E9X Exterior Mirrors \| E9X M3 Full Suspension \| E9X M3 Diff \| PT-CAN2 Enabled \| Bilstiens \| Michelin PSS's \| NBT Navigation Retrofit with Touch Pad
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06-27-2016, 02:18 PM	#8
bNks334 Major 427 Rep 957 Posts Drives: '11 135i (N55) Join Date: May 2014 Location: New York iTrader: (1)	23nm (per the BMW branded box) = 17ft lbs. Not sure why so many people are saying to torque them to all these wild numbers...
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06-27-2016, 03:54 PM	#9
ShocknAwe 1Addict 3233 Rep 7,894 Posts Drives: E82 Mutt, M57 Truck Join Date: Jul 2012 Location: Charleston iTrader: (22)	OEM is fine for mild tune. If pushing things up towards 100hp beyond stock (or beyond), I'd recommend going colder on the plugs. They come pre-gapped. __________________ 2010 135i 6MT Jet Black N54/3 FE82 Mutt \| BUILD THREAD \| GARAGE SALE
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06-27-2016, 05:08 PM	#10
Willortiz Banned 48 Rep 538 Posts Drives: 08 135i Join Date: Sep 2015 Location: Miami iTrader: (1)	If not pre gapped it should be between between .020-.023 of an inch
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