Just fitted up my system. The ITG filter is a great improvement. As an old dirt bike guy, I am more than comfortable with the foam filter. $40 for a paper filter from KTM always bothered me. But, the best part the immediate performance gain. I have 6+ years experience with the carbed 950. After a lot of fiddling I had my 950 right where I wanted it. After switching to an FI 990 recently, I wasn't so sure about the whole Fuel Injection deal and the lag and flat spots I was getting at low-mid throttle openings. In one shot (I know only change one thing at a time) I switched to a 2 into 1 exhaust and the Sporting Wood Intake system. I had bought the cable and was/am ready to do the mapping deal with Tune ECU. For grins, I fired it up and ran it up to Lake Tahoe. With no other adjustment, it runs great--flat spots and lag are gone! I have a very slight popping on decel. So I am looking forward to playing with Tune ECU and some different maps. Oh yeah----did I mention how much easier it is to access plugs and cylinder heads for routine maintenance? Best $160 I ever spent!!!