boss, please help and pm below
-Camry 2007 (duno engine spec)
-Auto trans
-Stock exhaust system
-improve FC/ noise noticeable at certain speed and rpm + fully rev the noise will appear .. some sort like metal part hitting tak tak tak tak fast speed/ don't like loud/noisy exhaust system.
-single (will twin more expensive? my car no bodykit still can fit twin? any good if go for twin?)