Where and how you ride makes a difference. I too have had both on. The desert really
wakes the 220 up and is great all around. It doesn't take from the bottom but it certainly doesn't add to it either. Like Kmccune, I prefer the woods pipe because I ride in tight woods which are usually wet and always hilly. The woods pipe adds torque which allows me to avoid wheel spin because I can usually ride a gear taller with it than with the desert, if you short shift it when the trails open up, its all good