I Am Looking For Input From Cal/ne Emissions Techs Who Have Seen Or Have The Done The Lb7 Front Exhaust Pipe Installation To An Lly Cal Emission Vehicle Leaving The Stock Muffler And Tailpipe Inplace. I Am Concerned About Throwing Codes And I Don't Want To Install A Finger Stick Untill It Becomes Connector Equipped That Can Be Plug In And Play. I Just Don't Want To Cut And Splice That Wire Harness! Some Have Said That With The Remaining Stock Exhaust System, There Would Be Some Backpressure To Avoid Throwing Codes,i Need To Be Sure As This Is Not A Federal Emission Truck That Most Seem To Be Changing Thanks For Any Input

You will be okay if you leave the stock muffler in place...