felt more like 4-5 hp on the coupe I had, especially cool nights. Carey Lyn On Fri, 13 Mar 1998, Dwight Varnes wrote: > The happy new owner wrote: > > So what kind of horse power gain would I see with a K&N filter? > > > > None that you'll notice. Maybe 1-2hp. > > The good news is, you won't have to replace it often and can just clean > and re-use it.