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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > DM Flywheel broke! Going SM flywheel???



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      02-24-2015, 05:34 PM   #1
rpa440
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DM Flywheel broke! Going SM flywheel???

My flywheel is used and i have to replace it !!! i have bought jb4 downpipe and other bolt on .... im planned to do about 450 hp can be a little more in the futhur ...


i see on YouTube smfw noise and i dont like this sound
i afraid of my dmfw with the extra power
the n54 is designed for dmfw ?
What you do if you are at my place ???

I want to know all about flywheel


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      02-24-2015, 05:36 PM   #2
Jeff@TopGearSolutions
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Get a new DMFW and call it a day. You only run into an issue in excess of 500WHP where it becomes imbalanced and will cause chronic check engine lights. You need upgraded turbo's to attain that power level and even still, 500WHP is just a conservative estimate, it could even be higher like 525WHP depending on the condition of your DMFW.
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      02-24-2015, 10:22 PM   #3
rpa440
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Why everybody is considering the single mass ???
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      02-24-2015, 10:32 PM   #4
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I will sell you my used dual mass flywheel with 45,xxx miles on it and in very good condition for $200 plus shipping. PM me if you are interested, i can take pictures of it.......anybody else interested let me know.......I think they are over $500 new if I'm not mistaken. You only need a single mass flywheel if you are putting out more than like 550hp or so and I think it's mainly because the dme starts to record faults since it's not able to read the timing correctly or something to that effect......please correct me if i'm wrong on that.
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      02-25-2015, 01:56 AM   #5
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Quote:
Originally Posted by rpa440 View Post
Why everybody is considering the single mass ???
Like Jeff said, no reason to go single mass unless you're pushing 500+ whp. The reason people are going in that direction is because of all the people going single turbo or the higher end Vargas/RB/etc twin turbo kits.

With your mods, you're in no danger of that limit so you should stick with the dual mass as it's easy to drive and won't have any noise (chatter).
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