hawk20

Well, if it changes when it changes gear, then it must affect performance -one way or the other. What we need is an objective test. Without that .....

raymond g-

You'll be getting a dyno session for kicks then. The ECU reset affects shift
points and discernable via the tach at given point during ac/decelleration.

Happy2th

I meant that I'm waiting for someone ELSE to post dyno results. I personally don't believe that there will be ANY HP gain from an ECU reset, despite all these "man it feels faster" testimonials.

raymond g-

ahhhh....yes, I agree.

DirtyVegasMB

This works on my CLK55 and E55. It just makes the car more responsive and I believe it does not upshift as fast. It is noticeable. I do not see what the big deal is. Get in your car and do it. Does not hurt anything and no expense out of pocket. It just may pleasantly surprise you...

BlkE63AMG

It also works on the E63. The car shifts more aggressively after using the sneaky reset. Will return to more sedate driving if you baby it for the next few weeks.

hawk20

There does not have to be a Horse Power gain for there to be an improvement in performance. Take a 250h.p. engine and change gear very early and the aaceleration from o-60 will be poor. Change gear at just the right mnoment and the acceleration will be better --even though same horsepower. Drive in heavy traffic, just pootling along and the gearbox will change gear at economy levels. It will get used to that. Not the optimum levels which might be at 5000 rpm or more. Question is does cancelling out learned behaviour for the auto box give a fresh start and better performance from MORE OPTIMUM GEARCHANGES. That is what needs testing. Of course, someone could ask MBUSA customer service?

jerryxu

On my slk32, the reset did very little if anything. The throttle response from standstill was still very slow.

Scott in H-town

question:

If you have keyless go, do you still need to put the key in the ignition for this reset?

SANDOVAL

When I did I used the key. I wanted to follow the instructions given to a T to insure I did the process correctly.

Scott in H-town

Ok. I was just curious b/c I don't really notice a difference when I do it with the key in the ignition or without. Maybe my transmission doesn't need this?

rbaker

Tried it on my C55 and it did almost nothing... throttle response is the same, only discernible difference is it shifts a couple hundred RPM sooner now than it did before!

You guys that are noticing a huge improvement must drive too slow

red60R

so does anyone have a list of what features are affected (other than resetting the shift points)? I'm wanting to do this but wondering what else will need to be adjusted afterwards. I've seen lights.....windows.....seat positions....does it erase presets on the radio and crap like that?

reaxion

When you wait the 2 - 5 minutes for the ECU to reset... you can get out of the car right?

So you guys turn the key to off, let go of pedal, leave the key in the slot and get out of the car and wait 5 minutes?

Surely you dont just sit in there for 2-5 minutes lol

sgtstanko

I will look but you dont have to disconnect the battery. This will cause other system to erase like the power window auto up and other features that may have been programmed seperately.

You can do the same thing by just pulling the ECU fuse for 20 seconds. BTW all this does is reset the adaptive strategy to start relearning. If you drive like grandma it will perform that way. It does not change predetermined cell parameters just the adaptive strategy of your driving style. It will relearn if you drive the vehicle hard again. Try down shifting and manually shifting holding rpm longer or downshifting quickly as you need to slow down for a turn or light......it will begin to mimick your driving style.

Your dreaming or hitting the bong to long if you think resetting the ECU makes it faster or perform better!

hawk20

Careful. You've just described why it will make it faster and perform better. If you have been driving in leisurely style, or caught in lots of traffic it will have learned -in your words- to mimic that style. If you reset and then drive briskly it will change gear at more optimum revs for performance. That is what adaptive means. It adapts. And nobody would make it do that , if it did not affect performance.

sgtstanko

I agree and we are saying the same thing...BUT it wont increase hp/tq or add anytime in your 1/8 or 1/4.

hawk20

No it won't add hp but it will improve times IF it alters gearchange positions as some claim.

Nij

How do you change your Octane settings????

sgtstanko

It wont........it shifts at redline...... what and how would that change anything.......think about that statement.........gearchange positions?!?!?!?!

PCam

Regardless of what the skeptics are saying, I tried this on my way out of work yesterday. Given the same amount of throttle, my car was nearly sideways with brand new PS2 Sports on it. If it wasn't like that on my into work this morning, explain how it was after the ECU reset. I don't drive like a grandma & still run with (and keep up with ) my old TT buddies.

If all this does is bring the car's ECU settings back to where they were coming out of the factory, it's well worth doing simply because we all get stuck in traffic, and don't drive it like it's stolen ALL the time.

Skeptics: Just reset it & see for yourself. Or, wait for someone to post ( fake) Dyno results, and don't do it anyway. And continue to argue with those who have & have seen a noticeable difference.

hawk20

Well yours may change at redline on every gearchange but mine doesn't and no Merc I have ever owned does. The whole point of the gearbox learning from how you drive and adapting is that it changes the revs at which it changes gear. (changes the 'position' in the rev range at which it changes). Drive gently or in lots of traffic and it gets used to changing gear early (at quite low revs). If you then change to drive hard all the time, it will progressively increase the position where it changes gear to further up the rev band. That is what adaptive means.

E55Freak

This worked on my moped. I popped a half inch wheelie. Can't we all get along here.

da_guitarist

Does anyone absolutely know that this does not affect our ECU octane and timing info? I would hate to know I spent $XXX on an ecu tune and then reset it to change the adaptive tranny, and give up any remapping that's been done.

sack5000

If you will read through this post, you will see this question asked many times. There is no effect on the mapping that was done as part of your ECU tune. It really just resets the adaptive tranny things that have changed as a result of your driving habits. Gets you back to square one. Many people seem to be high on the effects but they are really limited.