Is Vtech about the same as the old vacumm advance on older cars?

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

No,
Ignition timing changes VS variable camshaft movement.

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Shouldn't his 99 S320 have VVT?

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

Some really nice (almost tangential) information here

http://en.wikipedia.org/wiki/Variable_valve_timing

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
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I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

So this means that from factory they are already a performanced cam.Or can timing still be improved for lift and duration?

__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran

It means the computer can change the camshaft timing. A performance cam may still give better performance.

-J

__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.