This car belongs to a local businessman, the car is immaculate, he had installed a CAK and noticed a loss of power, I just got HP Tunning software, so he brought it in the first pull the AF was in the tens way to rich it made 359 RWHP, so we leaned it out got the AF in the 13's added a little timing made some changes to the torque management, adjusted the cooling fan and the car made 400 RWHP to the tires leaving, he is now debating headers.