415 HP and 565 Nm (419 lb-ft) of torque - Mercedes Benz SLK Forum

Performance MODS for the R171 Tuning and Performance modifications for your SLK

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#1 Old 11-02-2016
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415 HP and 565 Nm (419 lb-ft) of torque

Another question from me already sorry guys.

415 HP and 565 Nm (419 lb-ft) of torque these figures are they with a super charger or are these figures at the fly wheel.

Would be nice to have close to 300kw atw with out a charger whats the max I could get?

Anyone been able to get remotely close to 300 atw without a charger?
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#2 Old 11-02-2016
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those would be just with an ecu tune and headers from Kleemann site and should be at the motor.

55-K1(N/A): An optimized ECU software upgrade. Up to 385 HP and 545 Nm (404 lb-ft) of torque.

55-K2(N/A): K1 + a set of stainless steel tubular exhaust headers and downpipes. Up to 415 HP and 565 Nm (419 lb-ft) of torque.

see my ecu tune/headers thread here if you haven't:

https://www.slkworld.com/performance-...ipes-vids.html

and supercharger thread here if you haven't:

https://www.slkworld.com/performance-...188-198-a.html
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#3 Old 11-29-2016
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Originally Posted by jbanks15 View Post
those would be just with an ecu tune and headers from Kleemann site and should be at the motor.

55-K1(N/A): An optimized ECU software upgrade. Up to 385 HP and 545 Nm (404 lb-ft) of torque.

55-K2(N/A): K1 + a set of stainless steel tubular exhaust headers and downpipes. Up to 415 HP and 565 Nm (419 lb-ft) of torque.

see my ecu tune/headers thread here if you haven't:

https://www.slkworld.com/performance-...ipes-vids.html

and supercharger thread here if you haven't:

https://www.slkworld.com/performance-...188-198-a.html

Thats what i thought but if you look at the dyno reading its at the wheels showing those figures:O - Supercharged??

Broken dyno?? can our cars even get those figures ATW without a charger?

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#4 Old 11-30-2016
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some dynos will convert whp to bhp if you enter a conversion factor, that's probably what was done

headers/cams/tune on an R171 SLK55 will not be anywhere near 417whp
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#5 Old 05-06-2017
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Ok,
That's my job… Dynos convert whp to bhp but you don't enter any conversion factor, it calculate it automaticaly with the first deceleration, after you have entered temperature, wheel size etc.
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