Power Flow Systems, manufacturers of the popular bolt on tuned exhaust kits, is offering a $400 rebate from now until March on their goodies. They offer mods for 12 different aircraft including Jason's favorite, the trusty C-170. I've flown a both a C-172 and a Super Cub equipped with the power flow systems and was very impressed. The additional power is certainly noticeable and the specs even boast as much as a 7 knot gain in performance. The kits retail at Aircraft Spruce for between $3500 and $5000, so the discount saves you around 8 or 9 percent. Not bad if you're in the market for a little more power.

Let us know what you think of your Power Flow in the comments!!

Thanks David!