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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Tracking, Autocrossing, Dragstrip, Driving Techniques > How to avoid missed shifts?



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      05-10-2007, 12:45 PM   #1
leftcoastman
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How to avoid missed shifts?

Went to the drag strip for the first time yesterday. I'm normally a twisties guy so it was definitely a new experience to launch and just drive straight!

Out of the three runs I did, I blew my 1-2 shift in two of the runs! I somewhat forcefully move it into second at about 6000 rpms (didn't shortleg the clutch) and while the lever goes there, the gear doesn't engage.

What gives? If I gingerly put it into second, it engages just fine. But when I'm trying to shift quickly, a ginger shift just doesn't seem effective. What causes missed shifts and more importantly, how do you avoid them?

BTW - I'm in a 335i with 6MT and about 8000 miles.
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      05-10-2007, 04:08 PM   #2
iceefreshjimmy
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http://www.e90post.com/forums/showthread.php?t=29828

i'm not 100% sure if this is related to your shifting problem, but check this out.
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      05-10-2007, 04:11 PM   #3
ksfrogman
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Are you lifting off the throttle at redline, flooring the clutch, shifting then dropping the clutch with throttle?
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      05-10-2007, 04:41 PM   #4
leftcoastman
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Quote:
Originally Posted by ksfrogman View Post
Are you lifting off the throttle at redline, flooring the clutch, shifting then dropping the clutch with throttle?
Generally yes. Sometimes I keep part throttle. Which is preferable?

BTW - I removed the CDV.
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