I have the Mazdaspeed CAI in my 2006 Mazda 6i Sport and, of course, I've had no problems at all, especially with CEL lights and anything going wrong with the ABS sensor. I got mine installed back in September by the dealership itself and it cost me a little over $300 for the intake itself and the installation. I'm pretty happy with it. Mid-range to high RPMs are more of a blast now and I like the clicking and vacuum noise the car makes when put under moderate to heavy throttle. It's a sweet deal.