I get a funny thump noise when i shift hard. I have did a search and found out that its the diffs thumping. But i didnt find out how to shift hard and not make them thump
what is the the key
any secrets?

this has been asked sooooo many times. I just answered this question myself like 1 day ago. Please SEARCH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:-)
PS the answer to your question is that i don't think you can shift hard without making the noise. Maybe you can try to pause in between shifts.
ie. clutch in...1,2,3 shift, clutch out, get on the gas

That's the only thing i can think of really.

HAHA, you're a clutch dumper.[wigam voice] Don't buy a turbo without a dog box gear.:D :lol: ;)
REMEMBER, SMOOTH IS FAST!;)

A more effective way to reduce the problem is to hold the RPM's constant for a moment to unload the drive train. Not long, just a moment.

Read SPD's "how to shift"
http://www.spdusa.com/shifting.htm

Disengaging the clutch, with the drive line loaded, then waiting to reengage it will not fix the problem.