Injen Evolution Cold Air Intake
I've only had the cold air intake on for 2 days and haven't had a chance to really observe how well it performs yet. I had a Borla Cat Back exhaust put on at the same time. The installation was performed by my local dealer. I can say the parts were expertly installed and look and sound great. Will update when I have some concrete observations.
Injen-Wrangler Rubicon 2008
Amazing improvement in overall performance. The only problem with the install is the MAF rubber bushing. The one issued with the unit tore very easily and it was more than a notion to locate another one that would fit the hole and the MAF sensor. I would suggest the manufacturer install the rubber in the pipe and furnish a spare. You could be in trouble if you don't have a lot of stores around who might handle the rubber grommets in the size required for the MAF. This unit was installed on a 6 spd manual tranny. High gear, low speed performance, hills and general cruising was quite an improvement over the factory system or just a K&N filter in the air box. Gas mileage is about the same and maybe a bit better. Too early to tell with any improvements in gas mileage.