hi my back box on my exhaust has broken off so i was going to get a new back section for it but a friend told me that if i just get a stright down pipe with no back box on i will get more mpg out of my 110. is this true
hi my back box on my exhaust has broken off so i was going to get a new back section for it but a friend told me that if i just get a stright down pipe with no back box on i will get more mpg out of my 110. is this true
hi my back box on my exhaust has broken off so i was going to get a new back section for it but a friend told me that if i just get a stright down pipe with no back box on i will get more mpg out of my 110. is this true