i have a subaru that will turn over and wont start. i tried camshaft and crankshaft sensor but nothing. tried airflow senser an

Oh my goodness, what a ton of money and effort spent throwing parts at this car. You legitimately could be making things worse by doing so. When I read that someone has "tried a new computer", it's quite clear that the writer is way off course. Processors are extremely rare to fail and require programming to work with your car. You need a diagnostic tool with that kind of capability; you can't just "hot swap" the component and pretend it will work. Hell, the anti-theft keys won't even work to start with. I would strongly recommend restoring ALL original parts back to the vehicle and then having a proper diagnostic test performed. You have a lack of fuel, spark, air or an emissions system concern -- or a lack of engine compression or a timing issue. www.repairpal.com/repair-shops