Close

Results 1 to 25 of 25
  1. #1
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2


    Reputation: Yes | No

    Help - Mercedes Dyno Testing / dyno modes

    I took my car to the cp-e 10th anniversary event this past Saturday hoping to get some baseline dyno numbers on my car. They aren't a Mercedes shop, but they have a modern Mustang dyno and experience with other cars (BMW, Ford, Mazda mostly).

    The car was put in dyno mode, sport mode, and manual. But they weren't able to get good numbers off the car because it would downshift out of 4th (this is the gear they tested though apparently the closest gear for 1:1 is actually 5th) everytime they went WOT.

    Anyone know if there is a way to lock the transmission in a gear higher than first that will prevent down-shifting? Or are companies like RennTech, et al, doing the measurements in 1st?

  2. #2
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2



    Reputation: Yes | No
    My friend took these pics just for fun. Too bad I didn't get any usable numbers.

    Click here to enlarge

  3. #3
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,228
    Rep Points
    31,321.6
    Mentioned
    2056 Post(s)
    Rep Power
    314


    Reputation: Yes | No
    I thought you just had to put the car in dyno mode?
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  4. #4
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2



    Reputation: Yes | No
    That's what I thought, too. I was hoping that @Weistec or @m54b25 might chime in.

  5. #5
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,228
    Rep Points
    31,321.6
    Mentioned
    2056 Post(s)
    Rep Power
    314


    Reputation: Yes | No
    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    That's what I thought, too. I was hoping that @Weistec or @m54b25 might chime in.
    They will, they are just busy with 'real' work Click here to enlarge

    @Weistec @m54b25
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  6. #6
    Join Date
    Sep 2012
    Posts
    1,115
    Rep Points
    962.6
    Mentioned
    14 Post(s)
    Rep Power
    10


    Reputation: Yes | No
    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    That's what I thought, too. I was hoping that @Weistec or @m54b25 might chime in.
    You had it in the right settings. In my C63 it won't Downshift in manual mode but on non amg's it will. The solution is simple.
    you know how there is a "button" on the bottom of the gas pedal that your hear click when you go WOT? Just press the gas pedal all the way down without hitting that button and it will not down shift out of your selected gear. Just takes a bit of foot finesse to have it pressed all the way without hitting the button. That's what's causing it to downshift

  7. #7
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2



    Reputation: Yes | No
    @Weistec, @m54b25,

    Nothing? You guys have dyno'd E/CLS 550s. I'd love your assistance here.

  8. #8
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,228
    Rep Points
    31,321.6
    Mentioned
    2056 Post(s)
    Rep Power
    314


    Reputation: Yes | No
    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    @Weistec, @m54b25,

    Nothing? You guys have dyno'd E/CLS 550s. I'd love your assistance here.
    It's the weekend they should chime in when back on the clock. @Weistec, @m54b25
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  9. #9
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2



    Reputation: Yes | No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    It's the weekend they should chime in when back on the clock. @Weistec, @m54b25
    I was just pinging them again since I tried in my 7 Aug post; I figure a lot of people try to get their attention and it got lost in the noise.

  10. #10
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,228
    Rep Points
    31,321.6
    Mentioned
    2056 Post(s)
    Rep Power
    314


    Reputation: Yes | No
    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    I was just pinging them again since I tried in my 7 Aug post; I figure a lot of people try to get their attention and it got lost in the noise.
    People do they just are busy. It's Monday so they likely have a lot of stuff from the weekend to catch up.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  11. #11
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2



    Reputation: Yes | No
    I guess this one isn't getting an answer.... Click here to enlarge

  12. #12
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,228
    Rep Points
    31,321.6
    Mentioned
    2056 Post(s)
    Rep Power
    314


    Reputation: Yes | No
    Oh no it will, let's just be persistent.
    @m54b25 @Weistec
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  13. #13
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2



    Reputation: Yes | No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Oh no it will, let's just be persistent.
    @m54b25 @Weistec
    Trying again. @m54b25 @Weistec

  14. #14
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,228
    Rep Points
    31,321.6
    Mentioned
    2056 Post(s)
    Rep Power
    314


    Reputation: Yes | No
    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    Trying again. @m54b25 @Weistec
    And again @m54b25.

    I'll get you an answer on this nawlinstornado.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  15. #15
    Join Date
    Sep 2012
    Posts
    1,115
    Rep Points
    962.6
    Mentioned
    14 Post(s)
    Rep Power
    10


    Reputation: Yes | No
    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    @Weistec, @m54b25,

    Nothing? You guys have dyno'd E/CLS 550s. I'd love your assistance here.
    Did you read my post? No luck?

  16. #16
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2



    Reputation: Yes | No
    Click here to enlarge Originally Posted by ezec63 Click here to enlarge
    Did you read my post? No luck?
    Yes, and thanks, but I want to get a good and consistent measurement at WOT. Since feathering the throttle prevents this, I'm looking for an alternate solution.

  17. #17
    Join Date
    Sep 2012
    Posts
    1,115
    Rep Points
    962.6
    Mentioned
    14 Post(s)
    Rep Power
    10


    Reputation: Yes | No
    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    Yes, and thanks, but I want to get a good and consistent measurement at WOT. Since feathering the throttle prevents this, I'm looking for an alternate solution.
    No you can go WOT just DONT push the button in at the end of the gas pedal. That button serves as a indicator to the trans that you want to be in the lowest gear possible hence why it downshifts. You can still be at 100% WOT with the pedal down all the way without hitting the button just takes some finesse and a few trys to have it down all the way without hitting the button. Its the only way believe me i went thru the same thing with my previous sl550 on the dyno

  18. #18
    Join Date
    Sep 2012
    Posts
    1,115
    Rep Points
    962.6
    Mentioned
    14 Post(s)
    Rep Power
    10


    1 out of 1 members liked this post. Reputation: Yes | No
    the guys at renntech and weistec will tell you the same thing. There is no way to lock it into gear and i found out from the shop owner that does all the work to my car hes dynoed hundreds of benz/bmws and they both have the same issue if they are non M/AMG

  19. #19
    Join Date
    Feb 2012
    Posts
    207
    Rep Points
    952.3
    Mentioned
    51 Post(s)
    Rep Power
    10


    1 out of 1 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by ezec63 Click here to enlarge
    the guys at renntech and weistec will tell you the same thing. There is no way to lock it into gear and i found out from the shop owner that does all the work to my car hes dynoed hundreds of benz/bmws and they both have the same issue if they are non M/AMG
    This is correct and applies to any auto cars on the dyno that has a kick down switch.

  20. #20
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,228
    Rep Points
    31,321.6
    Mentioned
    2056 Post(s)
    Rep Power
    314


    Reputation: Yes | No
    Click here to enlarge Originally Posted by Imran@Evolve Click here to enlarge
    This is correct and applies to any auto cars on the dyno that has a kick down switch.
    Thanks for clarifying.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  21. #21
    Join Date
    Sep 2012
    Posts
    1,115
    Rep Points
    962.6
    Mentioned
    14 Post(s)
    Rep Power
    10


    2 out of 2 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Thanks for clarifying.
    Click here to enlarge see im not that stupid

  22. #22
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,228
    Rep Points
    31,321.6
    Mentioned
    2056 Post(s)
    Rep Power
    314


    Reputation: Yes | No
    Click here to enlarge Originally Posted by ezec63 Click here to enlarge
    Click here to enlarge see im not that stupid
    Not at all, well done.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  23. #23
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2



    Reputation: Yes | No
    Click here to enlarge Originally Posted by ezec63 Click here to enlarge
    Click here to enlarge see im not that stupid
    I hope it wasn't taken that way! Rep'd for apologies.

    My biggest concern is that I have to rely on the foot-talent of the dyno guy. No biggie, it just means I should make arrangements to have the same person do before/after dyno comparisons to get the best feedback. My hopes were for a technical solution that locked out the switch. I wonder if there is a plug I can disconnect.... I'll be taking a look down there tomorrow morning.

  24. #24
    Join Date
    Mar 2013
    Location
    Arlington, VA
    Posts
    169
    Rep Points
    142.6
    Mentioned
    10 Post(s)
    Rep Power
    2



    Reputation: Yes | No
    Click here to enlarge Originally Posted by Imran@Evolve Click here to enlarge
    This is correct and applies to any auto cars on the dyno that has a kick down switch.
    Thanks.

  25. #25
    Join Date
    Jan 2012
    Posts
    76
    Rep Points
    287.8
    Mentioned
    0 Post(s)
    Rep Power
    3


    Reputation: Yes | No
    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    My hopes were for a technical solution that locked out the switch. I wonder if there is a plug I can disconnect.... I'll be taking a look down there tomorrow morning.
    Very interesting thread... please let us know if you find a different/better solution.

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •