i have increase my 4g93t to 1 bar boost and tune it with e-manage. Now, if i down boost it to 0.6 bar, but dont tune my e-manage back, what will happen? engine running super-rich? or e-manage will adjust accordingly...
i use nismo exhaust now,,but sound no good!!i hear somebody say amuse very good,is tat very noisy...i 1 wen i drive slow will silent but wen hispeed will crazy??hope got some suggest