Quote:
Originally Posted by GFRoSTY
I think I'd look to have more tolerance in torque for any future changes I may make so the spec 3+ kit looks like the best option for me.
I'd like to keep using a DMF as opposed to a SMF.
Just looking at costs I can get one either delivered to UK or from within the UK.
I believe the factory OEM DMF is a branded LUK part around £420.
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You cannot use the factory DMFW past 500HP, it becomes imbalanced and will cause chronic misfires.
I always encourage folks to use the clutch kit based on their actual power output and goals. 3+ is a great clutch but it's made for applications that 2+ cannot hold. The 2+ has better drivability and life expectancy which is why we encourage it.
Quote:
Originally Posted by Ozzie335i
Go with what Jeff suggested. I am running 530 + whp with the same setup. If you are going to go high power, thus needing a Spec 3+ you will not be able to use the DMFW. The big power guys (600 +) fought with timing issues causing misses years ago. It was found that the DMFW was the cause. The rule of thumb is < 500 hp DMFW ok. > 500 SMFW is a must. For most street applications the Spec 2 + is the best choice.
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Quote:
Originally Posted by tisdrew
Ozzie and Jeff are right, you'll want a SMFW if you're chasing power.
FWIW, I'm running a 335is/550i w/ DMFW over 600wtq but I know it's a ticking time bomb. My plan for when it starts to go is mfactory steel smfw and either (a) twin-disc or (b) spec 3+
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Only a matter of time for sure. Let us know when you're ready
