Blu Bug
Full Access Member
My grandson and I changed spark plugs in my 2013 Roush SC SCREW yesterday. After two trips to the auto parts store, six hours of acting like a contortionist and half a pint of my blood we got it done. Truck has 68,500 miles on it and had NGK plugs in it so I assume one of the previous owners changed plugs at some point. One of the plugs was cross threaded which caused one of the trips to the auto parts store for a plug thread chaser (scary!) Changed plugs to comply with JDM's recommendation for the tune of theirs that I recently installed. Long story short the elbow behind the throttle body was a nightmare and if it hadn't been for the online videos showing at least one person had completed the task I might have given up. Truck is purring like kitten on steroids and the new tune seems to have made the shifting better. Need more time behind the wheel to know for sure.