I have the extra short throw, installed by JHM, and whole heartedly recommend it.
My previous car was an A3, in which I installed the diesel geek short shifter.
My current '07 B7 S4, which I've had for all of 3 months, has been quite a transition.
The power delivery is completely different, light FWD vs. heavy quattro, cable vs. solid transmission linkage.
Compared to the short shifted A3, the stock S4 was Extremely long. Resolving that was my first priority.
JHM installed their extra short shifter, and asked if they could use my stock shifter for a while to study it's geometry to improve the performance of their short shifter.
My observations on the initial short shift install was that it was a welcome relief to the long and numb feed back of the stock shifter. It did reveal some nuances of the linkage that was dampened by the stock shifter. It seemed like I could feel the long linkage arm flex during the shifts. The linkage itself felt a bit sloppy, and there was a very small bit of finesse needed for 1st gear. About a week later, they asked to test their revised shifter in my S4. I agreed and also installed their weighted delrin shift knob.
I've spent several days now (all day today), evaluating the new version of their shifter and here are my observations:
The new version eliminates any need to finesse 1st gear and seems to have mitigated a lot of the percieved linkage flex, and the whole thing feels a lot tighter - more direct.
My A3 short shifter had a definite 'notchy' feel (not a bad thing); the JHM shifter in the S4 does not feel notchy, it feels 'mechanical' and direct.
The solidness and weight of the JHM shift knob (vs. the hollowness of the stock shift knob) definitely contributed to the solid & direct feel of the shifts.
I am now very happy shifting with fingers and wrist vs. my whole arm. The shift preciseness is much improved. Not that the remaining components of the shift linkage couldn't be improved by the JHM treatment, but the short shifter is a very welcome and worthwhile improvement.
Jason and the folks at JHM are a pleasure to work with - it is obvious that they are S4 enthusiasts.
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