There is a recall on my car (2004 M3 SMG). It's a ECU reprogram...should I do it?

There is a recall on my car (2004 M3 SMG). It's a ECU reprogram...should I do it?
After having it done, I would like to undo it. I went to the track immediatly after having the new programming, and my speeds down the front straight were 5-10mph slower than before. Seems to kill the power coming out of redline shifts as well.

:mad :mad

^^^ I've complained about that power loss and everyone says it is all in my mind, I am making it up. :( I knew that when reving the car past 5k rpm there is no pull whatsoever, unlike before you can tell the vanos change and the rpm will increase dramatically. :mad I am glad I am not the only one, thus I am not crazy.:eyecrazy

Whenever a DME and/or SMG is reprogrammed, all of the adaptations will be reset and the vehicle runs leaner than normal. When I mean lean I mean in terms of fuel economy.. not "engine damage lean" thus power goes down. VANOS, ignition timing, knock adaptation, and throttle adaptation are all reset. For SMG it'll reset a few clutch adaptation features.

Some people say they notice a power loss. Others say they don't notice a difference and some say it actually improved driveability. This may have to do in the geographical area you are in.

My advice is to start driving the car very hard and it'll adapt to that driving style.

You have to do it or if something happens in the future they can void warranty saying you did not take care of the recall when your vehicle came into service.

Trust me, my car is not an apreciable asset, the car's value depreciate with every mile and day that goes by. My intentions is to keep the car until the world oil reserves disappear or I die, whichever comes first, given so I drive my car. I've reseted the car before via disconnecting the battery and the car didn't perform this slow. I also believe my car somehow had a very strong engine from the factory, so to me the decrease is noticeable.

You have to do it or if something happens in the future they can void warranty saying you did not take care of the recall when your vehicle came into service.

This is God's truth. There was no choice about it.

Trust me, my car is not an apreciable asset, the car's value depreciate with every mile and day that goes by. My intentions is to keep the car until the world oil reserves disappear or I die, whichever comes first, given so I drive my car. I've reseted the car before via disconnecting the battery and the car didn't perform this slow. I also believe my car somehow had a very strong engine from the factory, so to me the decrease is noticeable.

Disconnecting the battery on the newer BMW models will not reset/clear adaptations.

I just had mine done on tuesday, and come to think of it, she didnt feel like she was pulling as hard on the highway from 90-110 when i was playing around yesterday. Luckily, just randomly I have been driving the piss out of my car lately so hopefully that will help it out. but last thing we need is for our cars to be any slower with these darn 335i's lurking around waiting to get their paws on us... :shifty

This recall is giving me more and more reason to invest in some boosted power.

From another thread's posting:

...Failure to have this free repair work performed could be determined as lack of proper maintenance of your vehicle and could jeopardize your full protection under the emissions warranty provisions.
ttfn

Does that imply that one would lose emissions warranty protection only? I can lose an emissions warranty; but does losing that impact the rest of the warranty? There's two "coulds" in that sentence. Will BMW later act as if they should have used "will" instead? That's the gamble.

No emissions in Hawaii, and if I ever move to a state with emissions, just get the software update at that point.

So I may defer the "upgrade" until there is more evidence.

From other related threads & E46 M3 forums, it appears as if the throttle sensitivity is remapped for both normal and Spurt mode, making the initial pedal travel similar in sensitivity for both modes.

Will wait and see.

--patrick.