which rpm should i shift for smooothest drive? and i think i let the clutch out too soon or something, it just feels like it jurk lil bit when i let clutch go.
i usaully step on clutch fast and let it go pretty fast compare to other drivers since i don't wanna ride clutch
plz help! i need to fine perfect smooth shifting.
just explain it to me, i will understand, it's just defferent from japanese clutch

any help?

it depends on your diff right ?!? you will get used to it eventually

i usually shift at 2500~3000rpm

Get rid of your CDV (clutch delay valve), and you will notice an immediate difference.

http://www.zeckhausen.com/BMW/E46_M3.htm#CDV

thank you sir!

Is the clutch delay valve removal/install covered in a bentley manual. how hard is that to do? and does it make that big of a difference? What do you guys think about clutch stops? I am talking about one like the UUC one.

Nevermind on the install question. Found what I was looking for.

any advice for SMG drivers? its smooth and non-jerky when i'm driving S2-S3 and shifting on 3k-4k rpm but the engine (raise) noise is still relatively loud.... is that normal?

6825.236 Rpm

Definitely remove the CDV...

any advice for SMG drivers? its smooth and non-jerky when i'm driving S2-S3 and shifting on 3k-4k rpm but the engine (raise) noise is still relatively loud.... is that normal?

I believe there was a programming update from the dealer that is supposed to fix that. Hopefully someone with a SMG will add their input. If not you could give the dealer a call and see if there are any open programming updates out for your car.

I believe there was a programming update from the dealer that is supposed to fix that. Hopefully someone with a SMG will add their input. If not you could give the dealer a call and see if there are any open programming updates out for your car.

thanks! i will call the stealership and ask them

The first 3 Drivelogic programs shift waaaaay too slow and will always give nasty jerking action. I find it to shift the smoothest on program 4. It is the closest to normal smooth clutch/shifring speed. shift between 2500 and 3500 rpm depending on which gear. It also helps to slightly remove your foot from the accelerator in between shifts (regardless of what the manual says.) Stay out of auto and launch mode unless you enjoy constanly replacing your rtab among other things. With a little practice you will find the sweet spot and be able to shift very smoothly.

There is absolutely no difference from a "Japanese" clutch.

It's not about "what rpm"... it's "what rpm difference from wherever your rpm was before you changed gears". Gears are a basic concept, a percentage difference between each one.

For example, assuming standard E46 M3 differential ratio, 80mph in 3rd gear will always be about 6500rpm. So you're going to shift into 4th, and to make it smooth, you want to let the revs drop to match that gear's required rpm at that road speed. That's about 4750rpm.

Should you be thinking, "gosh, I need to rev at exactly XXXX rpm now"? No. learn to drive the car, learn to listen to the motor, and you will quickly figure out the rev drop or increase required between gears.

This is the exact same concept in any manual transmission car, whether it's Japanese, German, American, or anything else.

Oh, and "i usaully step on clutch fast and let it go pretty fast"... stop doing that. Until you really learn the car, you're not going to impress anybody playing boy racer when you're driving all herky-jerky. Right? :D

However... if all of this doesn't work, your car may actually have a problem. E46s have a Self-Adjusting Clutch (SAC) that often goes bad. Specifically, the SAC mechanism gets sticky and causes a 2-stage engagement that you cannot control, making even the best drivers look like they just got their license. If possible, have another M3 owner drive your car and see if it feels right to them. There are aftermarket replacement clutches that eliminate the SAC, so the clutch will drive normally no matter what (UUC does offer such a part for your car).

Likewise, as mentioned in a post above, the Clutch Delay Valve (CDV) may be giving you trouble. Simply remove it, see this page for details:

http://www.uucmotorwerks.com/html_techtip/techtips/check_valve.htm

Hope that helps!