I paid $199 for this about a month ago. Only ran it for that month and decided to go with MHD flasher instead. If you want entry level power then this is the one for you. Nice comfortable power. I'm trying to get a lot more power so I needed to get a tune for more boost. If you're just looking to have fun on the streets then this is the tune for you. Also, do yourself a favor and get you dual cone intakes and an hks ssqv bov. The sound is intoxicating! 

At the default setting of +3psi average increases are 30hp and 40tq to the wheels. For those looking to take things to the max up to +4psi can be quickly dialed in! Does not trigger codes and does not require entering the ECU area for installation. Can be installed and removed in minutes without any tools. Compatible with all ECU versions and transmissions for the 2006-2010 BMW 335i, 335xi, 135i, 535i, Z4 and Z6 N54 Twin Turbo. Also compatible with 2011-2012 N54 335is models