ashtaron14's Mod Photo Journal (Updated 06/20/17)

[ashtaron14]

CF Driveshaft Installation



Exhaust off, Heat Shielding off



Clean!







Difference of 10lbs, uses the stock bolts. Subframe didn't need to be dropped to remove the stock 2 section shaft, but had to be dropped to fit the 1 piece CF shaft.

[roastbeef]

how does the car drive/feel?

[duvinclunk]

Originally Posted by roastbeef

how does the car drive/feel?

Interesting in knowing as well...

[ashtaron14]

I had put on new tires (F80/F82 Spec 255/275 PSS) and it has been raining, so give me a bit of time for a proper review.

My initial thoughts
- Minor increase in NVH (less than Solid Subframe mounts)
- Throttle response is quicker and has a more direct feeling. The Supercharger feels like it spools faster and harder.
- After the car comes to a full stop, you get a funny sensation in the brake pedal like something is winding down. Perhaps from the inertia of the shaft or not having a giubo. Race car feeling

[Exclusivs]

Lots of upgrades here! Nice job!

How would you say solid subframe bushings / poly diff combination faired? Am intrigued by this combination vs going all solid / or derlin for differential.

[dmw16]

Nice looking car.

But glad you ditched that wing...it looks pretty bad. Way too small for the car. And it's a street car...so yeah...

[ashtaron14]

Originally Posted by Exclusivs

Lots of upgrades here! Nice job!

How would you say solid subframe bushings / poly diff combination faired? Am intrigued by this combination vs going all solid / or derlin for differential.

Solid Subframe Mounts are a MUST for our cars, whether you choose to supercharge or leave it NA. It changes the way the car feels, such that you can sense more of when the rear tires are going to slip. The Diff bushings compliments the Solid Subframe Mounts, but is where the NVH can increase, because that's where you can limit movement.

Solid Subframe Mounts don't make noise, so I chose this route because I don't want an insane amount of diff whine.

[ashtaron14]

Originally Posted by dmw16

Nice looking car.

But glad you ditched that wing...it looks pretty bad. Way too small for the car. And it's a street car...so yeah...

Thanks!

The Riceboy in me miss that wing at times

[duvinclunk]

Originally Posted by ashtaron14

Solid Subframe Mounts don't make noise, so I chose this route because I don't want an insane amount of diff whine.

Really? No noise?

[ashtaron14]

Originally Posted by duvinclunk

Really? No noise?

If you ONLY change the OEM Rubber Mounts to Solid Subframe Mounts, and keep everything else as stock, I seriously think there will be ZERO NVH increase.

[vincE92M3]

nice build. your car has seen many stages

[cenix]

love the fall-line cf driveshaft. i want this piece so bad. please give some detailed reviews of the part, i'm anxious to hear about it.

[ashtaron14]

Fall-Line Motorsport CF Driveshaft Review

The Good
- Installation does NOT require additional parts. Just uses stock bolts from the OE Shaft.
- There's an immediacy and urgency to the car's throttle input/output, it's like that you're in Sport Plus Throttle Setting in Comfort mode. Any delays/lag/slack that was there before, all gone.
- In Normal driving, the wife does not seem to notice the change

The Bad
- The NVH increase for the CF Driveshaft is SPEED based, while the whistles and whine of my supercharger is RPM based. The floor of the car will begin to have a vibration/noise (hum) starting around 110km/hr and will continue to increase as the speed rises. If you have an exhaust drone, that will for sure compliment it nicely I'm going to see if I can get used to it. For now I'm more intrigued by it than annoyed by it, Because Racecar

Thoughts
- Will I be able to break the Shaft? I'm not into launching the car (anymore), so maybe that's safer? I don't know how much torque this piece can take.
- Test drove my buddy's F80 M3, and that CF Driveshaft sure don't tell you that it's there.

[ashtaron14]

Further Thoughts
- The Drone is unbearable at 150km/hr
- The Drivetrain has firmed up. Shifter has lost slack, the vibration of the shifter has changed. The Clutch point feels less vague.

[roastbeef]

Originally Posted by ashtaron14

Further Thoughts
- The Drone is unbearable at 150km/hr
- The Drivetrain has firmed up. Shifter has lost slack, the vibration of the shifter has changed. The Clutch point feels less vague.

are you absolutely sure its the drive shaft?

[0-60Motorsports]

Originally Posted by roastbeef

are you absolutely sure its the drive shaft?

Yeah I would have a quick check just to see if nothing else is causing those issues.

[ashtaron14]

Originally Posted by roastbeef

are you absolutely sure its the drive shaft?

Originally Posted by 0-60Motorsports

Yeah I would have a wuick check just to see if nothing else is causing those issues.

Yeah it wasn't there prior to installing the shaft. I had my buddy drive the car before and after the installation. We both agree it's the shaft doing it, because I don't have an aftermarket exhaust and even though I got new tires (PSS), they wouldn't drone at 150km/hr.

[vincE92M3]

Originally Posted by ashtaron14

Oops… Got caught by the Mod Police, had to revert back to Stock to pass inspection. Sold the wheels, brakes, and Spoiler.

Interesting. What kind of laws are there in HK about modifying your car? It even impacts cosmetic mods? Do you have to revert back to stock with each inspection? However frequent or not that may be.

That sucks.

[whats77inaname]

Originally Posted by ashtaron14

Fall-Line Motorsport CF Driveshaft Review

Thoughts
- Will I be able to break the Shaft? I'm not into launching the car (anymore), so maybe that's safer? I don't know how much torque this piece can take.

I doubt it *lol*.

The Fall Line driveshafts are life cycle fatigue tested at over 1,400 foot pounds for stunning durability.

http://ind-distribution.com/ind/bran...ber-driveshaft

[Hujan]

Like the weight loss and the increased responsiveness but disappointed to hear about increased driveline noise. That is a serious bummer.

[ashtaron14]

Originally Posted by vincE92M3

Interesting. What kind of laws are there in HK about modifying your car? It even impacts cosmetic mods? Do you have to revert back to stock with each inspection? However frequent or not that may be.

That sucks.

There are guidelines to TD (Transport Department), but whether or not it's followed by the Police, is up to the Police. The Police can tow your ride on the grounds of suspicion of illegal modifications or street racing.

My buddy has gone to court because his front lip on his E46 M3 was so thin and low (Varis or APR, forgot) that the judge said that if he had hit a pedestrian, it may cause additional hurt/damage. This is the grounds of illegal cosmetic modification. GT Wings can hook onto a pedestrian and drag them, etc etc. It's up to the police/judge's imagination.

Yes it does suck.

[ashtaron14]

Originally Posted by Hujan

Like the weight loss and the increased responsiveness but disappointed to hear about increased driveline noise. That is a serious bummer.

I'm investigating into it. The hum I am experiencing might not be from the shaft. The thing is that I have Solid Aluminum Subframe Mounts and Poly Diff Bushings. Now the Driveshaft is also more solid. I'm going to put OEM Rubber Diff bushings back on, and see if it dampens the driveline noise.