Re: FJ is hitting the DYNO. Going to get some numbers on AIRRAID and Magnaflow Cat-Back.
I have to say that the vast majority of these aftermarket air systems are a waste. The HP gain you get when new is negligible for the price, and it's been proven that if you don't keep the K&N / other oil&gauze type filters cleaned regularly that they'll UNDERPERFORM a clean paper filter. Others don't like the idea that the guaze can let far larger particles into the intake system over paper filters. I'm all about manifolds in many situations, and exhausts at least sound good, but you guys should find better things to do with your money than buy air intake systems.
BTW, I've been doing engine mods for a lot of years on CJs, BMW M series cars and a few other toys.
That being said, I DO want to see what the dyno sheets show from this stuff. I have a good idea what we'll see, but I am interested in whether or not low end torque is comprimised from the aftermarket cat-backs if backpressure is reduced. I like the sound of the Magnaflow though... just not sure if the sound is worth 500-600+ bucks.