Steptronic 335i & Rear Wheel Dynoing

SilverState · 03-12-2007, 06:08 PM

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normtrum · 03-12-2007, 06:16 PM

I think Shiv posted some instructions. He would probably know best.

OpenFlash · 03-12-2007, 07:55 PM

Just disable the traction control fully before the car rolls on the dyno. To do this, press and hold the DTC button for 5 seconds. Then put the trans into Sport mode and pick 4th gear. Start the run at 2000rpm and finish it just before it upshifts at 6700rpm. Press the throttle until you feel the downshift kickdown click at the end of the travel. Don't press it into kickdown mode or it will downshift and screw up your dyno attempt

Cheers
shiv

BoostedInPhx · 03-13-2007, 12:11 AM

My car is still 2 weeks from being delivered so I have not tried it but can't you put it in sport mode and manually shift it up until you are at 2000 rpm in fourth to start the run. I didn't think it would down shift unless you stopped or were going very slow?

RiXst3r · 03-13-2007, 12:26 AM

it only automatically downshifts if the gear you are selecting would put the car into rpm's lower than 1000 rpms... and it wont go below 2nd without you telling it to. This is so you dont try and pull out into traffic forgetting its in 5th gear, and kill yourself.

musc · 03-13-2007, 12:37 AM

Quote:

Originally Posted by RiXst3r

it only automatically downshifts if the gear you are selecting would put the car into rpm's lower than 1000 rpms... and it wont go below 2nd without you telling it to. This is so you dont try and pull out into traffic forgetting its in 5th gear, and kill yourself.

Even the SMG in sequential mode will downshift itself if the RPMs go too low as to bog the engine.

03-12-2007, 06:08 PM	#1
SilverState Enlisted Member 15 Rep 46 Posts Drives: Gas-powered Join Date: Nov 2006 Location: Earth iTrader: (0)	Steptronic 335i & Rear Wheel Dynoing . Last edited by SilverState; 05-28-2007 at 11:49 PM..
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03-12-2007, 06:16 PM	#2
normtrum Colonel 52 Rep 2,225 Posts Drives: e90 335i, e46 330i Join Date: Feb 2007 Location: PNW iTrader: (1)	I think Shiv posted some instructions. He would probably know best.
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03-12-2007, 07:55 PM	#3
OpenFlash 1736 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	Just disable the traction control fully before the car rolls on the dyno. To do this, press and hold the DTC button for 5 seconds. Then put the trans into Sport mode and pick 4th gear. Start the run at 2000rpm and finish it just before it upshifts at 6700rpm. Press the throttle until you feel the downshift kickdown click at the end of the travel. Don't press it into kickdown mode or it will downshift and screw up your dyno attempt Cheers shiv
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03-13-2007, 12:11 AM	#4
BoostedInPhx Enlisted Member 0 Rep 44 Posts Drives: 335I Sedan Join Date: Feb 2007 Location: Phoenix, AZ iTrader: (0)	My car is still 2 weeks from being delivered so I have not tried it but can't you put it in sport mode and manually shift it up until you are at 2000 rpm in fourth to start the run. I didn't think it would down shift unless you stopped or were going very slow?
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03-13-2007, 12:26 AM	#5
RiXst3r 273 Rep 6,510 Posts Drives: M235i Join Date: Sep 2006 Location: Ohio iTrader: (14)	it only automatically downshifts if the gear you are selecting would put the car into rpm's lower than 1000 rpms... and it wont go below 2nd without you telling it to. This is so you dont try and pull out into traffic forgetting its in 5th gear, and kill yourself.
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