I have a '95 E420 that I topped out this weekend. I was driving through the desert and decided to see what it would do. I was on level ground and hit 127 very easily before the engine would momentarily cut out. I can't recall exactly what the RPM's were at but I remember that they were not even close to redline. My redline starts at 6000 RPM. I belive I was somewhere between 4500 and 5000. I'm guessing that it has a govenor that is limiting either speed or RPM. I would like to use the rest of the cars potential and get up to the bigining of the red zone.

If it were real teh foreground bushes would be blowing like a hurricane.

Nice job!

B

I think the later 400E/E420s (forgot which year it started) are limited to 130mph because they were shipped with H-Rated tires instead of V-Rated tires like the earlier ones.

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2008 BMW 335i Coupe

Ah yes, tales of speed. How can you help but top out a car, even if its a bread van? It has brought great pleasure and consequence into my life. My 300D tops out right around 105-110. It feels pretty good at that speed, but you have to continue moving in a straight line. Not much of a slalom performer if you know what I mean.

So lets say I go get a set of V rated tires for my E420.

Is there any way to bypass the unit that is limiting my speed? Is it a mechanical or electrical limiter? Is it limiting actual speed or RPMs?

Speed limiter...Thats why you buy a '92

Sounds like you would have to figure out what the limiting factor is- ignition system or fuel injection system. How integrated are those post K-jet systems?

I doubt its a "cut the green wire" type of bypass, or it would be posted all over the forums.

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'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E

I topped out the 300CD at 114, many times, even downhill, musta been gears. Couldnt get the CE quite to the top, probably about 150, Z rated tires. And it is a '92