Awhile back i filled out the survey bill had out about different peoples tunning and one of the ? was did you ever chunk a rod. i awnsered yes. another ? was whos tunning do you now have in, i said bills. but to clear things up i did NOT chunk a rod on bills tunning. i threw a rod in my first motor. I only put bills tunning in my truck with the second motor. My truck never ran so good before his tunning. i tried a lot of different peoples tunning and i'd say bills is the best out there. i sell a lot of chips and i will only put bills files on them. So i hope this clears things up.