Dealer has fix for P2006 CEL - new IMRC units are in !!!

[flyrevs]

MS3 Regarding the P2006 CEL - went into the dealer today, they "replaced IMRC unit with new updated part" 0.6 hrs labor (free - covered under warranty)
The part number is LEK9-20-170
CEL is gone, the car definitely has better pick-up, plus I reset the trip computer and it was 3 mpg better than normal after I got home (29 mpg - combined driving) so I suspect it has somehow leaned the car out a little. 2nd gear was spinning the tires way more easily and I was spinning them in 3rd also which rarely ever happened before.
I know 20 miles of driving isn't really much to go on but these are my initial findings - will keep you up to date after I get some more miles on it.
So far:

 

[Refonbass]

To play devil's advocate. The power "increase" your feeling from having this corrected part installed is most likely due to the fact that the dealer has presumably reset the ECU either directly or indirectly (having unplugged the battery during the service procedure).
When the ECU is reset the car will initially feel more responsive due to the fact that new air/fuel maps need to be established. Mazda has stated repeatedly that the part in question doesn't affect the overall performance of the car. But hey, if none of what I've stated is true and the update does in fact make the car faster even better!(yippy)

 

[Vixen]

I have had the new part for over a week. I can't believe how much she's opened up. 1st and 2nd don't even feel restricted (flat) anymore.
If it were to go back to how it was before they unplugged the battery, how long would that take?

 

[benzo]

It would relearn in a couple days. It must go through certain driving perameters.

 

[Vixen]

It would relearn in a couple days. It must go through certain driving perameters.

Good, hopefully mine is going to stay the way it is.

 

[Speedy3]

What is the IMRC?

 

[flyrevs]

What is the IMRC?

Not exactly sure but I believe it's Intake Manifold Runner Control .