hello bro,
just wanna ask u guys opinion,
im driving saga blm auto and just do some mod to my exhaust system. currently im using 4-2-1 powerzone extractor,2 swirl bullet and apexi s-slow muffler. just before i add the 2nd swirl bullet,i can feel my car very pickup bcuz time taken from 1k rpm to 4k rpm is very short,and the fuel consumption is very good than stock. after adding the 2nd swirl bullet,the car feels very heavy to accelerate. so, im thinking of taking out one of the swirl bullet and replace my piping to 1.7" just after the swirl bullet until muffler. can i ever get the pickup back? *for ur information,my piping from flexi pipe is 2" until bullet.