yeah the pipe and the standard cooler are connected by a rubber hose, it can be hard to get on as there is a decent lip on the pwr pipe, but it cancels out the most restrictive part of the factory induction system by going around the battery tray instead of through it, I fitted mine after I got the cooler and it was immediately obvious that there was alot less restriction. I was looking at PW stage2 cooler, and it looks like the pipework would be longer without their plenum, so more lag??? Don't get me wrong, the cooler looks awesome, right position and everything, I just think the plenum is a must if you go for that cooler. Thoughts anyone???