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      05-01-2012, 12:58 PM   #175
tom @ eas
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Drives: BMW
Join Date: Nov 2005
Location: Anaheim, CA

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Originally Posted by M3DCTBT View Post
All are missing the point of this software update.

Air mass fuel ignition targets are the same. Coming from someone who struggled with this same problem it was an intricate fix that alot of us had problems with as we did not want to update to the old tunerlock software before flash tools got around it.

To those on old software with low power: Try replacing your spark plugs on the same software version. Depending how bad they were here is your 20hp. Dyno tested.

Logging before and after Ignition targets show no knock activity and no negative adaptive values but sporadic low total timing targets and with plugs older then 15k on my car. New plugs almost gained 3 to 4 ignition degrees.

The new software version addresses the issues in where plug wear no longer offset low power. Less sensitive DME intervention with the ionic knock sensing plugs.
Couldn't agree more, I said this back in post 39:

Baseline dyno is required, otherwise it's a guessing game. On higher mileage M3s, plugs should be checked and/or replaced. O2s should be checked/logged as well, especially for those that have had multiple X-pipe swaps.

For those that have purchased their M3s used, we (or your local dealer) could provide maintenance history to see what specific work the dealership has performed in the past to limit variables in troubleshooting.