Actually, That was the old pricing structure - $315 was for a dynotune and chip for a car with a stock MAF and injectors, plus you'd have to pay $65-75 per hour plus we'd charge $50/hour for any mechanical problems that needed correction such as timing, fuel pressure, plugs, wiring, etc. that added up to over $500 for most cars mainly because a lot of cars had mechanical problems that needed to be corrected before we tuned it and dynotime was usually 2-3 hours. Our revised pricing is a flat $500 for a chip for all cars and it includes all the dynotime it takes, 1 hour or 10 hours - and we do a once over on the car and check for minor mechanical issues - we check and set timing, fuel pressure, vacuum leaks and run codes on it. We evalute the MAF and injectors to be sure they are OK. If we note things that should be fixed such as fuel filter, plugs, inadequate fuel pump and/or injectors and MAF, we can do the work for extra $$ or you can take it somewhere or do it yourself to save $$$ and bring it back when it's ready. This actually saves time and $$ in the long run. We had a run of cars that pegged the MAF, paid dyno time, then next time, ran out of fuel pump, then paid for dyno time, then fixed that and... well you get the picture. The avearge price for a dynotune across the US is about $600-700 - some do it a lot cheaper, somer even more. But a dynotune isn't something to price shop on.