Date registered: Oct 2005
Vehicle: SL55, 300SE, GL450, Daytona 955i
Location: Lincoln / Boston - MA
Mentioned: 8 Post(s)
Quoted: 324 Post(s)
Lowering idle speed is not a great idea, due to concerns with slow operation temp reachability in the winter, and more important, carbon deposits on exhaust valves, due to inefficient combustion below 700-750 rpm...
I am surprised your car has not stalled yet, when slowing down suddenly from an open throttle... not a fun experience....
BTW, its not known about 230 to be hard to hold at red lights, in fact, it's easier than average cars, because idle braking (pressure hold) is a built in feature in the SBC... If this is an issue for you, I have a feeling your SBC is acting up, if you have to brake excessively to keep the car in place....
Mercedes-Benz, W140 S Class S320 (AKA 300SE)
Mercedes-Benz, R230 SL Class SL55 (///AMG)
Mercedes-Benz, X166 GL CLass GL63 (///AMG)
Ducati 999 with Termignoni and CF
W164 GL class GL450 (sold) - R129 SL Class SL500 (passed on) - W163 M Class ML430 Designo (passed on) - W140 S Class 500SEL(sold) - W140 S Class S320(sold) - W140 S Class S500(sold) - W140 S Class 500SEL(sold) - W201 190E 2.3(sold)