hi all,

actually the campro auto 4-2-1 or 4-1 is better?

i am looking for improve torque. many say 4-2-1, but i go to 2 exhaust shop in penang, both bos tell me go for 4-1....blurr liao.

finally, one of the exhaust shop bos tell me, just do the decat and stick with the ori extractor. RM80 oni and traid in the ori cat converter.

after decat, can feel engine lighter, but not very significant.

penang