SD70Ace
Big yellow Diesels
Now, I got my 4 inch exhaust,AFE air filter on the way,new 3inch down pipe ready to be installed. Ive been reading about tuners/programmers. Wich are the best and easiest to use(as in installtion and lots of black smoke and not so much black smoke and towing ect)? And wheres the best place to install an thermocoupler for the pyrometer while Im installing the down pipe?