well i was on my way to my girls place and i was turning left onto a major street. green arrow lights up i just coast through driving all normal and this guy in an 03ish duramax passed me. younger guy stock wheels and tires with the exhaust dumped under the truck. he blew a little smoke on me and i didnt like that. so i turned it up to level six and dropped it to 4th and caught up to him. and gassed it as i passed by blowing alot of smoke onto him. soas i took off infont he tailgated me and blew some more smoke on him. and then new my truck was much faster then his. so i slowed down a little and passed some people so we could finish this in an open spot. and soon as traffic cleared i shot over to the inside line and he punched and so did i. i was in 5th gear and i took off and gained about 2 or 3 lengths on him but my egt alert went off and the truck defueled and and he started to gain real fast and i got scared cuz he would have thought he was faster. i shifted to 6th and fire walled it again and took off and gained about 3-4 lengths on him.