I've never played the game.... but many do
I always tell the truth.
When I was young I beat a 73 mustang with a 302 on about an eight mile road race in a 225 super six volare..
That guy told everyone who would listen I was running a v8. I guess he was pretty embarrassed. But the car was fine. He just couldn't drive and cars don't handle well with air shocks keeping the rear-end way in the air.