Worth the price=no. Performance Gains=no. It did increase the engine noise which sounded awesome but still not worth the cost. Any new BMW will not respond well to performance modifications that will allow your vehicle to remain under warranty-intake or exhaust. BMW builds their machines pretty much tapped out. You can count on about 2-4 hp increase with a intake and exhaust-not worth the $1800.00 in my opinion. That is a excellent vehicle I would not touch it. If you want to increase the hp buy and keep the cost down consider a 135i. .