Here's western motorsports cai, like a camaro lsx setup. 2 versions, one no tune, the other bigger tube one needs a tune. It also uses the reg cold air duct how I cannot see. And here is a dyno chart vs stock w the no tune version. Web page..Western Motorsports High Velocity Intake
http://www.wmsracing.com/wmsweb/media/wmsgifs/2011_dyno.jpg
http://www.wmsracing.com/wmsweb/media/wmsgifs/2011_hvi.jpg
http://www.wmsracing.com/wmsweb/media/wmsgifs/2011_dyno.jpg
http://www.wmsracing.com/wmsweb/media/wmsgifs/2011_hvi.jpg