Swapping "restricted" 2011 ECU for 2009 ECU for performance gain

[Ericson]

Hi !

I have 2011 DT 300i which has power rating of 29 vs 33 hp on 2009 model due to emissions restriction. I can get my hands on used 2009 model ECU for about 50 USD. I checked parts catalogs for pre-2011 and aft-2011 models and internal engine parts have the same numbers ( piston, head, etc ). Throttle body assembly also shares similar part number between "new" and "old" power rating.

2011 model uses 39200-LEA7-E05 ECU while 2009 model uses 39200-LEA7-E00 ECU.

So I came up with idea of swapping ECUs and see what happens. What do you guys think ?

[CROSSBOLT]

Hi !

I have 2011 DT 300i which has power rating of 29 vs 33 hp on 2009 model due to emissions restriction. I can get my hands on used 2009 model ECU for about 50 USD. I checked parts catalogs for pre-2011 and aft-2011 models and internal engine parts have the same numbers ( piston, head, etc ). Throttle body assembly also shares similar part number between "new" and "old" power rating.

2011 model uses 39200-LEA7-E05 ECU while 2009 model uses 39200-LEA7-E00 ECU.

So I came up with idea of swapping ECUs and see what happens. What do you guys think ?

Worth a try!

[Kymco Symco]

for that small amount of money i would buy it  & try it....can' do any harm

[Ericson]

Hi !

I wanted to report that swapping ECU is the way to go if you are having issues with mid throttle hesitation or "micro-pulls" with post 2011 ECU's. That was the main reason why I deceided to swap ECUs. I tried to rotate MAF sensor before but that didn't help. I made now 3000 km with "new old" ECU and I'm so sure that I will never go back to 2011 restricted ECU so I sold it

Engine is pulling forward constantly no matter how wide I open the throttle. I can't feel any additional HP or torque. ( 2009 33 hp vs 2011 29 hp ).  My fuel MPG went down from 75 to 71.

[izmircephastanesi]

Hi !

I wanted to report that swapping ECU is the way to go if you are having issues with mid throttle hesitation or "micro-pulls" with post 2011 ECU's. That was the main reason why I deceided to swap ECUs. I tried to rotate MAF sensor before but that didn't help. I made now 3000 km with "new old" ECU and I'm so sure that I will never go back to 2011 restricted ECU so I sold it

Engine is pulling forward constantly no matter how wide I open the throttle. I can't feel any additional HP or torque. ( 2009 33 hp vs 2011 29 hp ).  My fuel MPG went down from 75 to 71.

how can i find 2009 ECU?

[Stig / Major Tom]

how can i find 2009 ECU?

Ebay - or national motorcycle recycle yards?

Stig

[JJJoseph]

how can i find 2009 ECU?

Do you have the Kymco part #?  Just plunk it into your browser search and sources will pop up like magic.