High lifter sells a filter, jet, muffler add-on which they say gives a major power boost. Has anyone had any experience with it? and
...what part of the power band does it increase?
...is it sensitive to temperature changes and requires re-jetting often?
...how loud is it?
...how hard is it to install?
...is the K and N filter adequate?
...would you recommend it to others?
Looking for more power for towing up hills.
Thanks..........