Hey guys, I have a 2007 Honda TRX 420FE. I was wondering if I have to buy a power commander if I upgrade to a K&N Air Filter and a new exhaust. I'm gonna wait on the exhaust, but the air filter is pretty cheap, so I'm thinking of buyin it pretty soon. I'm also getting a 2" lift kit and new springs, and I'm thinking of buying spring spacers for them to get a little more outta the lift. Finding parts for my quad is hard, and I was wondering if you guys had any suggestions. And thank you for any information Also, if it cool if I post some before and after pix of it here? I know it's not a side by side or a cart.