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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 04-27-2013, 01:35 AM
aybarra408 aybarra408 is offline
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Location: san jose
 
Join Date: Mar 2013
Posts: 34
Mein Auto: 2007 335i coupe
Spark Plugs for modified 2007 335i

so i just installed the Cobb FMIC and plan on doing the cobb app stage 2 tune..i wanna buy new plugs so that i dont have any misfire complications but im not sure if i should just buy the oem bosch plugs or some other type of high performance plugs..

i found this link

http://blog.protuningfreaks.com/2013...m-ilzkbr7a-8g/

should i just buy the stock ones or does anyone have a recommendation of plugs i should use instead?
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  #2  
Old 04-27-2013, 07:31 AM
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thekurgan thekurgan is offline
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Location: Sacramento, CA
 
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Mein Auto: S65B40 Powered
It's worth a shot, but with everyday driving, I may worry about the heat range; fouling and/or carbon buildup on the plugs themselves. If you're draggin' daily, I guess that's ok and that's probably the only reason for these tunes anyway.
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Old 04-27-2013, 09:00 AM
SuperTerp SuperTerp is offline
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Location: DMV (DC, MD, VA)
 
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Posts: 3,226
Mein Auto: m4now M5M3 550 760 335RIP
Quote:
Originally Posted by aybarra408 View Post
so i just installed the Cobb FMIC and plan on doing the cobb app stage 2 tune..i wanna buy new plugs so that i dont have any misfire complications but im not sure if i should just buy the oem bosch plugs or some other type of high performance plugs..

i found this link

http://blog.protuningfreaks.com/2013...m-ilzkbr7a-8g/

should i just buy the stock ones or does anyone have a recommendation of plugs i should use instead?

I'd just do stock and swap them out at earlier intervals. Thats what I'm doing.
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Old 04-27-2013, 09:27 AM
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bear-avhistory bear-avhistory is offline
2014 435M-Sport/MPPK
Location: NC - USA
 
Join Date: Nov 2006
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Mein Auto: 2014 435M-Sport/MPPK
The heart of PTF's statement is "extensively pushing well past the stock power levels" They are involved with N54's pushing out 725whp. I would be looking into 425whp+ before worrying about dropping the heat range on my plugs.

Light to medium bolt-ons are good to go with non-BMW branded Bosch BMW factory stock part number plugs from the auto store. Good plan to change plugs every 25K miles with a modified engine.
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