A big thanks to Walkinshaw....
Discussion
Just picked my R8 up today and had a nice long Shakedown drive back to Teesside to assess the mods. My car is an LS3 auto, and now has Walkinshaw Performance cam, 2.5" tubular headers, sport cats and Walkinshaw Performance catback, also had auto box remap. The car now sounds spot on for my taste - the Performance exhaust is permenantly set to 'quiet' on mine because I prefer the deeper, more muted exhaust note as opposed to the Nascar sound, and the addition of headers and cats just make it even deeper and slightly louder. I pulled up next to a parked car at a service station and set his alarm off!!
The cam too gives it the proper muscle car sound as well as more power and torque throughout the rev range, it's not as lumpy as the Wild cam but it does have a nice lope to the idle and sounds great driving through town! MPG is no different to before - averaging 25mpg on the way home. Whats not to like!
The cam too gives it the proper muscle car sound as well as more power and torque throughout the rev range, it's not as lumpy as the Wild cam but it does have a nice lope to the idle and sounds great driving through town! MPG is no different to before - averaging 25mpg on the way home. Whats not to like!

Demon Hill said:
How many extra horses do you think you have gained from the mods, and what's your gearbox like now with the re-map.
Walkinshaw claim a 15 - 25% gain in power for the cam, which is nice - but it's the total 'attitude' the car has gained that is worth the money alone, it certainly sounds and feels a lot meaner now.....which equals total grin factor! I had the 'box remapped a few months back at Monkfish, and it's a lot smoother now - the main thing that always annoyed me was when it'd always drop into 1st gear when slowing down to turn into a road say, it doesn't do that now so i'm happy! 
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It;s usually a slippery slope, but this one seems to be teflon coated. 