Review on K&N Cold Air Intake Kit: High Performance, Increased Horsepower: 50-State Legal: Compatible with 2007-2011 DODGE Nitro (57-1556) by Michael Onwukaife

Great product I would give 5 stars if the assembly wasn't so bad. Remember that on a 2008 or newer nitro you will need to drill an additional 1/8" into the already 3/4" cam air hole. The problem with this is that you can't just buy a 7/8" drill bit at your average hardware store, and a hole saw poses a huge risk of creating a slotted hole since there's nothing in the center guide. keep working I was able to do this with a 7/8" drill bit and a power drill and even that was patchy. This part alone added nearly 2 hours to the "90 minutes” installation time. Also, the instructions are TERRIBLE if you've never done this before. There is a table on the first page that you need to check at every step as the instructions don't give any key information and if you're not careful you'll miss a washer or nut somewhere. It doesn't help that the reference photos are black and white with black parts on black parts and looked like they'd been photocopied so many times you couldn't tell what was about to happen.