Weistec Tune Post Driving
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2012 E550 4matic
Weistec Tune Post Driving
I've seen some things about the ECU or the TCM relearning the style of how you drive after the ECU has been disconnected for an extended period of time. Driver sportier during the learn phase or slower and smoother for faster responsive or smoother driving respectively. Well I just received my tune this past Friday, and wanted to know if there was any truth to that. If so, is there anything I should be doing during this learning period? Or has that time passed? Can I disconnect the ECU and try again? Would teaching the ECU/TCM sporty habits lower the longevity of the transmission?
Also, plan to get it dynoed this Friday. Is there anything I should pay attention to? I've heard of the mustang vs dynojet arguments. How one reads lower. But should I be looking to upgrade spark plugs or just replace them? Tires will be on once the weather warms up a tad. Just looking for some info on things I should be aware of or should look to upgrade/replace in order to compliment the tune. Not looking to add a downpipe unless it's catted. I can't deal with that sound. Lol
Also, plan to get it dynoed this Friday. Is there anything I should pay attention to? I've heard of the mustang vs dynojet arguments. How one reads lower. But should I be looking to upgrade spark plugs or just replace them? Tires will be on once the weather warms up a tad. Just looking for some info on things I should be aware of or should look to upgrade/replace in order to compliment the tune. Not looking to add a downpipe unless it's catted. I can't deal with that sound. Lol
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From: California
2013 E550 4MATIC - P1, P2, SPORT
The only one thing that caught my eye was disconnecting the ECU. You don't need to disconnect it to force it to relearn.
https://mbworld.org/how-tos/a/merced...set-ecu-387028
https://mbworld.org/how-tos/a/merced...set-ecu-387028
Thread Starter
Member
Joined: Jan 2020
Posts: 164
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2012 E550 4matic
The only one thing that caught my eye was disconnecting the ECU. You don't need to disconnect it to force it to relearn.
https://mbworld.org/how-tos/a/merced...set-ecu-387028
https://mbworld.org/how-tos/a/merced...set-ecu-387028
Senior Member
Joined: Nov 2018
Posts: 443
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From: California
2013 E550 4MATIC - P1, P2, SPORT
Honestly not sure. I reset my ECU the weekend after I got the car and then got my tune. Resetting it probably won't remove the tune mapping, but let's wait for someone who knows for sure.
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2012 E550 4matic
Indeed. That's something I'm rather afraid of. Rather not risk it. But if there's some sort of optimization to be made, I'd love to know what it might be. Also, would spark plugs make much of a difference post tune? Or is that something I should've got pretune?
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
every car I've had that 'learns' from how you drive, about a day and 20 or 30 miles, and its relearned.
years ago I had a VW Jetta loaner for a weekend that was adaptive. apparently the shop secretary normally drove it, and it was super docile when I got it, when I brought it back 100 miles later it had decided it was in sporty mode, hah hah. mechanic/owner laughed next time I saw him, said she was pissing and moaning for a week that I'd ruined 'her' car because I was still in my rather aggressive driving phase in my late 30s. he also said not to mind her, the car NEEDED to have itself rung out and its GOOD for those motors to be revved up hard to burn the carbon out.
years ago I had a VW Jetta loaner for a weekend that was adaptive. apparently the shop secretary normally drove it, and it was super docile when I got it, when I brought it back 100 miles later it had decided it was in sporty mode, hah hah. mechanic/owner laughed next time I saw him, said she was pissing and moaning for a week that I'd ruined 'her' car because I was still in my rather aggressive driving phase in my late 30s. he also said not to mind her, the car NEEDED to have itself rung out and its GOOD for those motors to be revved up hard to burn the carbon out.
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Joined: Jan 2020
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2012 E550 4matic
every car I've had that 'learns' from how you drive, about a day and 20 or 30 miles, and its relearned.
years ago I had a VW Jetta loaner for a weekend that was adaptive. apparently the shop secretary normally drove it, and it was super docile when I got it, when I brought it back 100 miles later it had decided it was in sporty mode, hah hah. mechanic/owner laughed next time I saw him, said she was pissing and moaning for a week that I'd ruined 'her' car because I was still in my rather aggressive driving phase in my late 30s. he also said not to mind her, the car NEEDED to have itself rung out and its GOOD for those motors to be revved up hard to burn the carbon out.
years ago I had a VW Jetta loaner for a weekend that was adaptive. apparently the shop secretary normally drove it, and it was super docile when I got it, when I brought it back 100 miles later it had decided it was in sporty mode, hah hah. mechanic/owner laughed next time I saw him, said she was pissing and moaning for a week that I'd ruined 'her' car because I was still in my rather aggressive driving phase in my late 30s. he also said not to mind her, the car NEEDED to have itself rung out and its GOOD for those motors to be revved up hard to burn the carbon out.
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
ah, well that gives me a cause for concern then. As I dont normally push my car unless necessary. Or the occasional R/T or BMW that wants to ride on me and then zoom around as if he can pass me lol So driving normally as I do, im assuming that it relearned and set itself up for a less than stellar power delivery? Id like to reset that process if possible. Even if I dont drive that way everytime, it would be nice to have that sort of power delivery/ecu adaptation when needed. How do I relearn the ECU driving habits? Ill consider driving aggressive for a day just to program it that way.
any 'learning' car I've driven, its just the transmission shift points, and maybe the throttle response curve. you still get full power if you put your foot in it. the sportier throttle gives you a little more juice at a lighter throttle setting which makes it 'feel' more powerful, but in reality just makes it harder to drive in traffic since the throttle becomes more aggressive..
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2012 E550 4matic
any 'learning' car I've driven, its just the transmission shift points, and maybe the throttle response curve. you still get full power if you put your foot in it. the sportier throttle gives you a little more juice at a lighter throttle setting which makes it 'feel' more powerful, but in reality just makes it harder to drive in traffic since the throttle becomes more aggressive..
Also, still curious about the spark plugs
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
i don't have a v8 benz, i was speaking in general terms based on previous cars. AFAIK, my V6 E350 4matic does not 'learn' driving style, although it does have a E/S button for the transmission shifting style.
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2012 E550 4matic
ah, well damn. regardless as I said tho. I appreciate your input. That at least steers me in the correct direction
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Joined: Dec 2008
Posts: 143
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From: N. Virginia
2023 E 53 sedan
This is probably what you guys are talking about which was posted on Benzworld way back by a member who got it from a VW forum. I've used this for many years starting with my '01 SLK 320, '05 CLK 500, '12 C350 and now with my Renntech tuned '14 E550. For the 3 previous cars, I felt the need to reset the adaptive parameters every week or so depending on how aggressively I drive the car. But as one of my nephews tells us, "Just give it an Italian Tune Up" and you don't need to do this reset! lol. As for the plugs, to those who have an ECU tune, I was advised by RT to use OEM plugs but set gap to .022. Our car's transmission has torque management as I was told also by RT which reduces engine power to 1st and 2nd gear to prevent damage to it. I would like to add also that with my car now that i don't feel the need to do this reset as often as I did with the previous cars. When I drive it on the aggressive side, shift point changes (i.e. holding low gears for longer times and so on). But when driving less aggressively, it's on 6th gear even at 30-35 mph. Depending how lightly I'm pressing on the pedal.
Resetting Adaptive (or Throttle for some) Parameters:
1) Turn key to ON (before start)
2) Press throttle all the way down
3) Hold for 5 seconds.
4) Turn key Off
5) Release throttle.
6) Wait for 2 minutes.
Good Luck and have fun!
Resetting Adaptive (or Throttle for some) Parameters:
1) Turn key to ON (before start)
2) Press throttle all the way down
3) Hold for 5 seconds.
4) Turn key Off
5) Release throttle.
6) Wait for 2 minutes.
Good Luck and have fun!
Thread Starter
Member
Joined: Jan 2020
Posts: 164
Likes: 21
2012 E550 4matic
This is probably what you guys are talking about which was posted on Benzworld way back by a member who got it from a VW forum. I've used this for many years starting with my '01 SLK 320, '05 CLK 500, '12 C350 and now with my Renntech tuned '14 E550. For the 3 previous cars, I felt the need to reset the adaptive parameters every week or so depending on how aggressively I drive the car. But as one of my nephews tells us, "Just give it an Italian Tune Up" and you don't need to do this reset! lol. As for the plugs, to those who have an ECU tune, I was advised by RT to use OEM plugs but set gap to .022. Our car's transmission has torque management as I was told also by RT which reduces engine power to 1st and 2nd gear to prevent damage to it. I would like to add also that with my car now that i don't feel the need to do this reset as often as I did with the previous cars. When I drive it on the aggressive side, shift point changes (i.e. holding low gears for longer times and so on). But when driving less aggressively, it's on 6th gear even at 30-35 mph. Depending how lightly I'm pressing on the pedal.
Resetting Adaptive (or Throttle for some) Parameters:
1) Turn key to ON (before start)
2) Press throttle all the way down
3) Hold for 5 seconds.
4) Turn key Off
5) Release throttle.
6) Wait for 2 minutes.
Good Luck and have fun!
Resetting Adaptive (or Throttle for some) Parameters:
1) Turn key to ON (before start)
2) Press throttle all the way down
3) Hold for 5 seconds.
4) Turn key Off
5) Release throttle.
6) Wait for 2 minutes.
Good Luck and have fun!
Member
Joined: Dec 2008
Posts: 143
Likes: 6
From: N. Virginia
2023 E 53 sedan
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Joined: Jan 2020
Posts: 164
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2012 E550 4matic
