N52 engine response difference between sport and non-sport

sajibaba · 06-13-2015, 01:56 AM

Quote:

Originally Posted by rjahl

Is anyone considering the adaptation values in the DME. If you have been running poor fuel or driving like Miss Daisy for a long time the DME will adjust and get stupid. I don't know how much good fuel or good driving it takes to get the DME back to normal but I suspect it's a full tank of gas or more.

Any way to simply reset the adaptation values in the DME and not wait for the car to relearn my driving style? I drove the car up from Austin to Denver using the highest octane fuel available but cruised on the highway most of the time. (it drove the same sea level as it does at altitude so that's not a variable).

hassmaschine · 06-13-2015, 08:47 AM

Give it a Ferrari tune up.

dbond · 06-13-2015, 08:38 PM

The proper way to clear adaptations is using BMW software INPA or ISTA/D. I heard on several occasions that disconnecting the battery for 24hr with negative and positive wires shorted accomplish the same. Hard to believe considering that adaptations are store in DME EEPROM.

thakid22 · 06-13-2015, 08:57 PM

Quote:

Originally Posted by hassmaschine

Give it a Ferrari tune up.

Ahhhh! The Italian tune up...
Simple yet effective.

Hassmashine, I've been running across a lot of your current/past posts
lately. I like your style/thinking.
Kudos to you!

Three_thirty_I · 06-14-2015, 07:26 PM

Just out of interest, what are the year models of these two cars, and what engine model numbers do they both have (should be visible where the engine number is)? Both are obviously manual? Does the sport model have active steering?

sajibaba · 06-21-2015, 10:53 PM

Thanks for the response everyone. The indy repair shop I took it to wasn't able to find any faults in the system (which apparently still does not rule out the vanos solenoid issue) but I had them remove and flush the solenoids. They also cleared the adaptations and the car does drive significantly different...better throttle response all throughout the range but most noticeable at high rpm past 4,500. The power delivery still feels somewhat different between the two cars (still less of a vtec kick to the non sport model but it is stronger and more linear past 4,500...it drives more the way na BMW's have driven in the past). If I had to guess, I would put my money on the adaptation clearing procedure.

06-13-2015, 08:47 AM	#24
hassmaschine Major General 3987 Rep 7,212 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	Give it a Ferrari tune up.
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06-13-2015, 08:38 PM	#25
dbond Private First Class 53 Rep 199 Posts Drives: bmw Join Date: Nov 2012 Location: Phila iTrader: (3)	The proper way to clear adaptations is using BMW software INPA or ISTA/D. I heard on several occasions that disconnecting the battery for 24hr with negative and positive wires shorted accomplish the same. Hard to believe considering that adaptations are store in DME EEPROM.
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06-14-2015, 07:26 PM	#27
Three_thirty_I Lieutenant Colonel 378 Rep 1,928 Posts Drives: 2010 BMW E90 330i M Sport Join Date: Aug 2010 Location: Cape Town, South Africa iTrader: (0) Garage List 2010 BMW E90 330i M ... [9.63]	Just out of interest, what are the year models of these two cars, and what engine model numbers do they both have (should be visible where the engine number is)? Both are obviously manual? Does the sport model have active steering? __________________ 2010 BMW E90 330i M Sport (M) Ex: BMW E90 330i (M) '05 (His) \| (Hers) BMW E46 320i f/l (M) '03
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06-21-2015, 10:53 PM	#28
sajibaba New Member 1 Rep 5 Posts Drives: S2000 Join Date: Oct 2014 Location: Denver iTrader: (0)	Thanks for the response everyone. The indy repair shop I took it to wasn't able to find any faults in the system (which apparently still does not rule out the vanos solenoid issue) but I had them remove and flush the solenoids. They also cleared the adaptations and the car does drive significantly different...better throttle response all throughout the range but most noticeable at high rpm past 4,500. The power delivery still feels somewhat different between the two cars (still less of a vtec kick to the non sport model but it is stronger and more linear past 4,500...it drives more the way na BMW's have driven in the past). If I had to guess, I would put my money on the adaptation clearing procedure.
	Appreciate 0 Quote