So I bought one of these off fleabay for cheap, $200. The install was easier than I thought. Not too hard to reach that lower connector. To tell the truth I am not noticing too much difference yet. I suppose I need to put some miles on it. Taking someone to the airport in a bit. I'll wind it out on the way home and let you all know what I think. Worse comes to worse I'll just take it back off and re-sell it. Not going to consider any other type of tune until the warranty runs out.