Has anyone had any experience with the Sprint Booster? The guys on the Cross Fire site have mostly all gone "nuts" about it. Seems to eliminate the lag from the throttle because of the wire control, and make the car more responsive, and "feel" more powerfull. Cost around $300.

 

Works on later slks only, not pre 2000.
All it does is keeps throttle linear. No extra power or anything.
You can do a manual reset of yours too:

Auto or manual, has to be done weekly or so...

Key in ign
turn to on (not start)
hold throttle to floor hard
hold for 10 secs
turn key off
release throttle
wait 2 mins before starting and driving off.

Bazzle