I installed my R/L exhaust today using a new valance ($ 252.00 from the dealer, incl tax). I thought about cutting the existing valance, but I knew that if I did I would eventually spend at least a weekend making a trim flange for the cut out to match the factory side, so I decided to go on and spend the money now. It took about an hour and a half, including cleanup, and a significant portion of the time was spent on the two little metal clips that hold the bottom of the valance to the bumper.
I mostly did this swap for the look, from the first time I saw the Sky I thought something was missing with the single exhaust. I like the sound, a little more snarl than the stock exhaust, but not as loud as the aftermarket exhausts that I have heard.
My only disappointment is an apparent loss of power. Before I did the swap I took my GTech for a couple of runs at a not-yet-opened shopping center. In two passes I recorded max hp of 115 and 118. After the swap I duplicated the test and got 110 and 112 hp. I have not looked at the curves yet, but the peak power is distinctly lower.
Has anyone dyno'd a 2.4 with the R/L exhaust ? If so, what was the result ?
Sky NA 2007 Midnight Blue
Sky RL 2008 Carbon Flash - Naked