I have an exhaust (stock with cat removed) for sale if you want it, but I'd suggest going something a bit lighter!

I wouldn't worry about a second map for 'fuel economy'. I have stage 3 filters with a PCV and I'm still averaging 56mpg...

And this bike roars now :-D

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Bike: 2013 XT660Z, TKC70 tyres

Mods:
Barkbusters, Scottoiler, DIY Tail Mod, DNA Stage 3, Power Commander V & O2 Eliminator, Exan X-Black Stainless exhaust, Tool tube, Ohlins linear front fork springs, Nitron rear shock, JT front and Supersprox rear sprockets, D.I.D. VX 520 chain, Adventure Spec bashplate, DIY USB Outlet, DIY chain guide, Kev's Throttle mod

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