S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Thoughts on doing a Kleemann S4 on an S550?

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Old Sep 24, 2006 | 10:19 PM
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Thoughts on doing a Kleemann S4 on an S550?

I haven't heard much about people modding their S550, but I was thinking about this last night and wanted to see what everyone's thoughts were...

What do you think of doing a Kleemann Stage 4 with their LSD and high performance brakes upgrades? Should push around 500hp and 480lb-ft - according to Kleemann, the new 7G trans should be able to handle that.

Is this possible? Thoughts?
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Old Sep 24, 2006 | 10:47 PM
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are they slapping a supercharger for 500 hp upgrade? I think go for it, but my main concern would be the tranny tho!
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Old Sep 24, 2006 | 11:09 PM
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Originally Posted by BoBcanada
are they slapping a supercharger for 500 hp upgrade? I think go for it, but my main concern would be the tranny tho!
They are.

Stage 4 would be ECU, supercharger, camshafts, headers and exhaust. Agreed on the tranny, though. I think it'd just be barely at the limit.

Stage 1 is just ECU and supercharger.
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Old Sep 24, 2006 | 11:12 PM
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From their FAQ:

Will the 7G tronic be able to handle the power of a KLEEMANN tuning solution?

The 7 speed 7G tronic transmission (722.9) is slowly being phased in to replace the 5 speed (722.6) transmission Mercedes Benz has used for the last 5 years. All new N/A V6 and V8 vehicles are now being built with the W7A 700 variant of the 7G tronic. The WA700 variant is endurance load rated by Mercedes Benz at 760 Nm (560 lbs/ft) of torque. This means the transmission will handle this amount of power continuously with out failure. There will never be a time where one can develop this kind of power continuously on the road. Momentary load ratings are easily 35 % higher than continuous ratings. The 7G tronic transmission will easily handle the performance from a KLEEMANN conversion. The 7G tronic has been available for nearly one year and KLEEMANN has modified many of these vehicles. None of these modified vehicles has had any trouble to date, many of them having logged in excess of 64,000 km (40.000 miles).
http://www.kleemann.dk/site/Main/faq
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