i got my playstation chipped wit the 7 wire and i just wanted to know if u can trust the mod chips, will they screw up ur playstation

no ... if/when you want to remove the chip, just heat up the solder points and gently ull off the wire, one at a time. all will be as it was

had a modchip in my psx for the past 4 years now and trust me it won't screw up your psx.