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Discussion Starter #1
(Been reading around, just want to make shure before i order)

2007 Euro3 model.
910R.

I'm buying the short arrow exhust, i was planning on keeping the stock headers and just buy the mid pipe and the short arrow, or is it much more to gain with the arrow headers...

I guess i also need a new ECU, could someone tell me a littlebit about that one? and where/witch one (i'm in the learning phase).


(Know its been up before, but i'm not shure if its the Euro2 , 3 or the US models i been reading about)


Thanks
 

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Arrow Thunder...no mid-pipe

I think what I'm reading from their ad here is that the Thunder comes with it's own mid-pipe that eliminates the catalytic converter.

http://www.motovationusa.com/mvstore/Scripts/prodView.asp?idproduct=209
I've read that the ECU change is not necessary, but there's LOTS of opinions out there on that topic. Couldn't hurt to open up the breathing a bit with either a BMC or DNA air filter.
 

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I was wondering also if the arrow header is an improvement over the stock one? They look very much the same.
 
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