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      10-06-2016, 12:51 PM   #1
dragonsi
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E90 M3 6MT MFactory Dry Carbon Driveshaft Review

Initial Thoughts

This isn't the first product I purchased from MFactory. Before, I had purchased their helical LSD for my E90 6MT 330i along with their diff rebuild service for a 3.64 FD diff I had sourced from an AT 330i. I was very pleased with their customer service, quality of the product, and the gap they are filling in the automotive aftermarket, which is affordable high quality drivetrain components.

So when they announced they had developed a DRY carbon fiber driveshaft for our cars, I held my breath and was one of the first to try it out in North America.

Installation

I had the driveshaft installed at the same time I had TMS rear subframe bushings and Delrin diff bushings done. My installer Performance Eurowerks noted that it's good I paired the install with the bushings in the rear, because it was necessary for the diff to come out to install the driveshaft.

First 200 miles Impressions

Having had a Z32 300zx TT with an aluminum 1 pc driveshaft, I already knew what benefits could be had by lightening up the driveline.

Engine/throttle response is greatly improved. This resulted in feeling that the car moves through the rev range noticeably quicker now. Especially down low, it no longer feels like the engine is "winding" up, it pulls through the rev band much more effortlessly. The clutch also sticks less from what I believe is the driveline binding less now that the driveshaft is 1pc vs 2pc. I live in downtown Chicago, and the 6MT E90/2 is an awful city car, but this modification made the experience of driving in the city much better.

As far as NVH, I had the solid and delrin rear bushings done at the same time, so I can't accurately attribute how much NVH was added from just the driveshaft. I haven't ridden in other cars where the bushings were done, but based on the reviews I've read, I don't believe the driveshaft added much if any on top. Ideally, a well constructed CF driveshaft should actually reduce NVH.. The car is my daily driver, and it has not been compromised at all in that aspect. I've also driven the car up to 140 mph to make sure it wouldn't vibrate at high speeds, and the driveshaft performs flawlessly!

Pics below taken by my installer Performance Eurowerks









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Last edited by dragonsi; 10-06-2016 at 12:59 PM..
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      10-06-2016, 03:23 PM   #2
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This is a beauty! I'm happy to hear about this market offering and your experience with it. Thanks for sharing.
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      10-06-2016, 06:43 PM   #3
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Since it retains the factory guibo, I'm guessing that it doesn't change NVH much at all.
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      10-06-2016, 07:17 PM   #4
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how much did it cost you?
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      10-06-2016, 07:19 PM   #5
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Also I forgot that I wanted to mention how it has had an effect on engine braking. Normally, going full throttle and coming completely off throttle - the engine brakes really hard. With the driveshaft installed, the engine brakes significantly less harder.
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      10-06-2016, 07:30 PM   #6
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Quote:
Originally Posted by tony093 View Post
how much did it cost you?
MSRP IS $1499.95 normally but I got it for less since I participated in testing.
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      10-06-2016, 08:29 PM   #7
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It should be fine since it retains the guibo like bmw does on the new m3. 1 piece shafts with no guibo often vibrate.
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      10-06-2016, 08:40 PM   #8
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Sweet, definitely going to look into one of these. Did you happen to annotate the weight difference between the MFactory shaft and the OEM shaft?
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      10-06-2016, 09:01 PM   #9
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Interesting feedback about the reduced engine braking, as I actually love this aspect of the car, which really encourages you to modulate the throttle and set up prior to and throttle steer through turns. Also feels like the F82, despite having a CF shaft, has a decent amount of engine braking as well. How much is it really reduced with the CF driveshaft?

Also interested in the weight savings.
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      10-06-2016, 10:07 PM   #10
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Quote:
Originally Posted by kamber View Post
Sweet, definitely going to look into one of these. Did you happen to annotate the weight difference between the MFactory shaft and the OEM shaft?
I believe it's ~11lbs, stock for a 6MT is ~25lbs. Much lighter

Quote:
Originally Posted by FogCityM3 View Post
Interesting feedback about the reduced engine braking, as I actually love this aspect of the car, which really encourages you to modulate the throttle and set up prior to and throttle steer through turns. Also feels like the F82, despite having a CF shaft, has a decent amount of engine braking as well. How much is it really reduced with the CF driveshaft?

Also interested in the weight savings.
I agree with you about the engine braking, it was an endearing trait but I can't say I really miss it. The difference in engine braking was noticeable right away, compared to how over the top it is from the factory. Of course though, this was only evident while driving spiritedly and doesn't really show up in regular driving.
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      10-07-2016, 12:33 AM   #11
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Thank you for the review & feedback. Glad it has made a noticeable improvement
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      10-07-2016, 10:14 AM   #12
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Yea keeping the rubber guibo is nice, Im running DSS CF shaft since were first ones to make it for this car but.. It uses a thick alum adapter plate instead of anytype of rubber guibo. That paired with solid diff mounts did add NVH, wish would of had this option out back then.

On another note, very odd they removed rear diff for this. Replacing drive shaft does not require it. Once you pop out the rubber guibo you have plenty of room to move it in and out, did it on my back in my garage.
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      10-07-2016, 10:22 AM   #13
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Quote:
Originally Posted by squartus View Post
Yea keeping the rubber guibo is nice, Im running DSS CF shaft since were first ones to make it for this car but.. It uses a thick alum adapter plate instead of anytype of rubber guibo. That paired with solid diff mounts did add NVH, wish would of had this option out back then.

On another note, very odd they removed rear diff for this. Replacing drive shaft does not require it. Once you pop out the rubber guibo you have plenty of room to move it in and out, did it on my back in my garage.
I was also wondering that, but stopped caring when I saw it mounted to a guibo. omg omg.
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      10-07-2016, 10:49 AM   #14
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Quote:
Originally Posted by MFL View Post
I was also wondering that, but stopped caring when I saw it mounted to a guibo. omg omg.
Yea im kicking myself right now, not having that rubber guibo makes a HUGE difference. I mean its solid etc but I get that hum over 80-90 MPH without it, wish I would of held out for this puppy.
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      10-07-2016, 11:08 AM   #15
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Good to hear somebody finally came to their senses and made one of these with the guibo intact

How many miles were on your original driveshaft and guibo?
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      10-07-2016, 11:08 AM   #16
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Hi where did you buy the driveshaft from? Do they make one for dct cars?
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      10-07-2016, 11:19 AM   #17
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Yes, we have one for the DCT also

We were just waiting for some more solid feedback before releasing them to market.
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      10-07-2016, 12:14 PM   #18
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Quote:
Originally Posted by MFactory View Post
Yes, we have one for the DCT also

We were just waiting for some more solid feedback before releasing them to market.
Hi, I am in the UK.

Can you please PM me a price shipped to London, UK for a 6MT?

Is this still in the testing stage or are you now happy to fully release it to the market? I wouldn't want any hassle being so far away from you...

Thanks

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      10-07-2016, 12:17 PM   #19
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Just waiting for a couple of other testers to provide their final feedback, and we can start putting these into production
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      10-07-2016, 12:42 PM   #20
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Quote:
Originally Posted by MFactory View Post
Just waiting for a couple of other testers to provide their final feedback, and we can start putting these into production
are you by chance going to offer a group buy?
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      10-07-2016, 12:51 PM   #21
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We will indeed (I can't give pricing here though, as this is not a sales thread)
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      10-07-2016, 01:07 PM   #22
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Quote:
Originally Posted by Richbot View Post
Good to hear somebody finally came to their senses and made one of these with the guibo intact

How many miles were on your original driveshaft and guibo?
It was removed with 19K miles
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