OK, well i have a 2006 Mazda 3 and i wanted to get a chip for it. will that mess up my engine? how much HP will it give me? whats the best mark for them?
don't do it. Those things are a rip off and don't work. Also, you could damage your vehicle. The mazda 3 is a great car anyway. just get a new cold air intake or a header or something like that. Better yet, get an amplifier and a subwoffer or maybe some new rims or get it lowered. Don't replace the chip.