Currently my car has a flowmaster catback and K&N FIPK CAI kit.... I recently purchased billetflow 2.76 blower pulley along with 4 idlers, LFP heat exchanger, kooks longtube headers and x pipe, which is all waiting to be installed when I get the car back out in the spring. I am kind of new to modding and I have a buddy that can get me a new diablo predator tuner for a little cheaper than $399 without a mail order custom tune, or should I buy the diablo from a company that provides me with a mail order custom tune? What do you guys suggest?