i wasnt really planning on buying a flash tuner anytime soon, but my stupid obd2 code reader took a dump. i got my full refund of $300 back from the store and now im wondering. should i just buy a tuner instead?. id love some feedback from people who have actually bought them. also, can a flash tuner read, and clear codes on all obd2 cars. or will it just work on my mustang? thanks for the info.