I have a 2007 bone stock Rappy 700, and I purchased a pro foam air filter intake setup. It is still shrink wrapped, but I was informed before I install it to purchase a EFI controller. I do not plan on adding any other mods such as full exhaust or any engine work. Before I get any further, is it worth it to buy a controller and install the intake? I plan on selling this Rappy in a year, but I wanted to install the filter setup instead of reselling it. I have zero mechanical knowledge when it comes to these things and to top it off, I am serving in the military in Germany. So I have to ask experts like yourself online for advice/info. Also do you recommend to run with the lid on or off? I will be trail riding, no sand, but a some mud. This is Germany, so it is not like Arkansas mudding woodlands, but enough to get you dirty. i prefer something plug and play with the premap like alba controller for me. Something to where a noob like myself can figure out without doing any engine long term damage. something setup for just the stock exhaust, but with a intake setup. Also I am looking for something under $100 used, if you know someone whom has one for sale. I tried educating mysef by looking at the controller with the number system or the mode button configuration and it looks complicated. Thanks for your help. I know that I should have done the research before I started clicking away on the net to buy things for my Rappy. Just got excited, that's all.