Someone suggested that the Sommer KTM air box mod was a nice add on in addition to pipe and jetting. Install is cake and is nicely made. As usual dealing with Sommer, product arrived in 4 days :eek1 don't know how they do it . Just waiting for the pipe & jet kit to arrive before I can really be able to tell the difference but I'm sure it will be noticible because there is so much more in that LC4 motor. Here's some photos for those interested, don't know if they've been posted before.