John in answer to your thoughts on being sued, I guess the McDonalds hot coffee thing proved that anyone can get sued. But if you explained your thoughts as to why the new distributor was better and also offered the option of the cheaper stock unit, this would be letting the customer have a choice and you would not be commiting fraud. you would be offering the customer a chance to save money over the long run. Down side this would cut your repair shops profits down because the car would not need tuned up as often.
I wonder if you could be sued for not offering the option of a better system to your customer.
