Hello Everyone,


I am getting ready to install a dual exhaust system using factory replacement piping and Flowmaster Series 40 Delta Flow mufflers. Will I need to make any EFI system modifications or will the system accept the change and re tune itself?I do not want to run too lean or anything like that. Any help will be much appreciated.


Thanks

 

as long as the oxygen sensors are still in the system, there shouldn''t be any issues. you may have to give it 2-4 full temp cycles to completely dial in though.

let us know how it works for you. my wife has the 93 vic and I''m tempted to do that to it as well as my 88 mgm.

 

Will do, it will be after the first of the month, I just had the exhaust re-done on my 51 Chevy and dual exhaust put on my 87 Dakota today. Ouch! Thanks for the info!