just wondoring what wires i need to cut or splice to a switch so i can switch between pump and race gas tune.. previouse owner had a switch setup but disconnected it. im running a aem ems btw

 

For my clients with supras i normally hook a switch to switch #5 or #6. I cant remember off hand what switch number i use for evos Then use the nitrous ign and fuel maps for race gas. (obviously if the car isnt running nitrous)

 

You can also load a race gas map or pump gas map very easily on EMS. Just as a second option.