I put a K&N kit on my Deville a couple of weeks ago, very un-Cadillac like but man did that ever work out. I was going onto the Gardner Expressway last week, it is about a 100 foot elevated road above the Lakeshore in Toronto. I was at a stop light just before the ramp. I have no idea what the incline is but it is steep probably 35 to 40 degrees to get up on that expressway. I punched it at green and of course a patch of burning rubber until traction control comes in then all hell broke loose I hit the speed limiter before I got on the expressway while I was still on th on ramp going up hill! Speed limiter in a Deville is 180 kph.