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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Starting Build with Reliability Mods



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      08-01-2018, 01:23 AM   #23
DYOOS
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Originally Posted by LiquidREVUP View Post
Still worth it if you are running higher than stock boost.
What's the downside?
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      08-01-2018, 01:26 AM   #24
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Originally Posted by LiquidREVUP View Post
Still worth it if you are running higher than stock boost.
What's the downside?
If there's not enough boost and heat and pressure is too low inside the cylinder, the spark plug tip is "too cold" and can't self clean. Fuel on the tip and fouls up, eventually causing misfire. Too cold a plug and you have to change the spark plugs right away.
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      08-01-2018, 10:31 PM   #25
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Quote:
Originally Posted by LiquidREVUP View Post
If there's not enough boost and heat and pressure is too low inside the cylinder, the spark plug tip is "too cold" and can't self clean. Fuel on the tip and fouls up, eventually causing misfire. Too cold a plug and you have to change the spark plugs right away.
Appreciate it man. Super helpful. I may just go with 1 step colder to keep it on the safe side.
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