I took my car into get a couple TSB done to it, one was Lack of Power. So they ended up reprograming my ECM. When I got my car back (a little under two months ago) it felt even slower. But these past couple weeks the car has been feeling new again. It now has that pep and acceleration that it used too. Dose the ECM take a while to get used to your driving style like a ECU?

 

Thats weird, I just had mine in for the engine sensor recall yesterday
and i asked about the lack of power tsb and he said he'd check it out.
Well I get my car back and service receipt only shows that they replaced the
engine sensors per recall. But I swear my Max is slower, to the point where
TORQUE STEER IS ALMOST NON EXISTENT.
I don't know if they reprogrammed my computer or what but i'm a little ticked.

 

I had a similar experience. Only when I got my car back this past friday, it ran great. Hasn't run like that in a long time. Unfortunately, it only last for about 3 days or so. Now, it's sluggish again .