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SMG upgrade to CSL spec

2003 - 2009, roadster, coupe, facelift
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bladeowner
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Joined: Wed Apr 18, 2012 7:40 pm
Location: Yorkshireman in High Wycombe

SMG upgrade to CSL spec

Post by bladeowner » Tue Jun 19, 2018 10:24 pm

patriot66 wrote: Tue Jun 19, 2018 2:17 pm
Tenma wrote: Tue Jun 19, 2018 12:05 pm Smg is clunky , that's the part of the fun
Oh here we go again ! SMG is NOT clunky. I welcome anybody to come out with me and either driven hard or soft mine is smooth as silk :thumbsup:
Seconded :thumbsup:
2004 Sapphire Black 2.5 SE Z4 SMG

Tomcat
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SMG upgrade to CSL spec

Post by Tomcat » Sun Jul 01, 2018 7:31 pm

kis wrote: Tue Jun 19, 2018 2:53 pm Sounds like a bad clutch IMO? You've replaced most of the oils? Seems like the gear isn't engaging properly or smoothly? Possibly some sort of sensor but beyond my knowledge or expertise!
But is it normaly, that "ECU" lift gas before shifting in SMG?? Normally with manual transmission you lift gas almost same time while pushing the clutch pedal, so passengers in car do not even feel the shifting if driver is good, In my Z4 it is really annoying when it lift the gas before shifting.

If the new clutch help, I definitely change it, but I can't find the "connection" to my issue??

Gazza51
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SMG upgrade to CSL spec

Post by Gazza51 » Sun Jul 01, 2018 10:52 pm

Tomcat wrote: Tue Jun 19, 2018 11:10 am

It feels that it would be much better if it not lift the gas totally, example with 50% gas lift it would be much smoother??

Don’t lift the gas when changing gear.
Current - Z4 MC, M3 CSL, S54 Z3MR, Z1.

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kis
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SMG upgrade to CSL spec

Post by kis » Mon Jul 02, 2018 10:35 am

I think it says somewhere that you don't need to lift accelerator (or gas) pedal. In practice I think you can lift slightly for a totally smooth shift, otherwise you can just shift without any lift. There won't be a massive lurch forward or anything.
My E85 Z4 3.0i SMG

BMW Family History (past and present):
1 Series - E87
3 Series - E46 Coupe, E46 M3, E90 (x3)
4 Series - F36, F82 M4
5 Series - E34 (x2), E39
7 Series - E32
X5 - E53, E70
X6 - E71

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