I bought my new exhaust for my 700r 2006. I went with the Fat Boy by Duncan Racing with a Vortex EFI Interceptor and a K&N filter with a Proflow adapter. I already bolted on the exhaust and fired it up just for a few seconds to hear it. Sounds real mean. I will give you further details once I install the other components.

 

nice, take some pics when you can

 

Please let us know about the Vortex EFI unit....I'm thinking about getting this for my 700r, and want to know how you like it. Thanks!

 

I just posted some exhaust pics to My Page if anybody wants to see them

 

After one ride with the modds installed, I can notice a huge difference. A lot better bottom end acceleration (1-3 gears really noticeable). The Vortex EFI controller unit itself looks almost indestructible. The only thing I would say that might be a CON for some people is the Duncan pipe is really loud. I don't know the exact DB rating, but it is loud. I do recommend it for great performance improvement.

 

Had a Duncan system once, and yes they are loud....loud gets real old after awhile.

 

Looks pretty nice I wish you luck