2014 CTS-V Sport, 1987 Buick Grand National, 1972 Pontiac
So you are saying that you think that a K&N filter won't make a difference in horsepower, torque, fuel economy??Submariner409 said:K&N is primarily well-marketed overhyped expensive .......... stuff. We got rid of oiled air filters back in the late 50s. Their oil filters are made by Champion Labs, suppliers to at least 7 other brand names. For real world testing you need to spend money - lay in a stock of various brand air filters. Buy a ScanGauge-II and set the unit to monitor MAP - inverse manifold vacuum. Now do a series of WOT to redline runs through the gears, swapping filters after each run. The filter that gives the lowest manifold vacuum reading way up at redline - as in: damn near NO vacuum - is the best filter for that engine. I guarantee that you will find that a "stock" pleated panel air filter is the way to go, and it makes not one iota of difference if it's a WIX, Purolator, AC Delco, PartsMaster, whatever. Any of those has a huge amount of media surface area (the pleats) and will filter down to the single digit micron level. A ScanGauge will monitor any 4 of 12 preset "gauges" and you can create others based on what your car's data stream supports. www.scangauge.com. I use them in the car and trucks. I also happen to be partial to WIX (NAPA Gold) filters - oil and air.
I usually don't keep cars more than 3 years so I guess longevity isn't an issue with me but yeah I guess if I was to keep a car long term I would think twice. I've had aftermarket air filters on every car I've ever owned and noticed improved throttle response a nice enhanced intake sound and usually better mpg also, as far as power I'm guessing on the Vsport the power gain would only be about a 1-2% gain so we aren't talking about a noticeable gain but I believe every little bit counts. All I plan on doing is a drop in k&n filter some down pipes and a tune and I'll think I'll be happy with 75+hp and 100+tq gain.CTSVsport said: