Review on Back Pressure Gauge Kit For Car - Exhaust Back Pressure Tester By After Market Auto & More - 50 Plugs Included - Accurate Results - User-Friendly Instructions - Practical Grey Case by Matthew Shankar

I was having a problem with my 2002 F-150 and I was afraid the cats were clogging up. So before I spent $500 on a new exhaust system I decided to try this tester. It was easy. I drilled a small hole and inserted the tester. The meter was easy to see and read. My cats are in good shape! The pressure is the same both before and after. They also supply a small insert that pops into the hole with a hammer when you're done. I highly recommend this product for anyone who is a do-it-yourself'er. It's one of those tools that you may not use that often but when you need it, it's perfect!