Join Date: Dec 2013
Vehicle: SLK 350 R171 2004
Other Toys: Mercedes W204 C280 Elegance
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From the web
“To do this we need to do two things: retard the ignition timing to reducing the torque which allows the car to decelerate normally, and run a very lean air/fuel ratio so too much heat isn’t created,which could affect reliability.”
The heavily retarded ignition also means much of the combustion happens with the exhaust valves open (in fact within the exhaust system), and much of the fuel is ignited by the hot exhaust and/or catalytic converter, hence the burbles, pops and crackles you hear from your tailpipe.
“The intensity of the burbles on these set-ups varies depending on the exhaust temperature – how hard the car’s been used. The hotter the exhaust system is, the easier this tiny amount of fuel we add flashes off,”
I can help with the installation of DAS/Star Mercedes, XENTRY,EPC, and WIS PM me.