Okay so I got 1 5/8 Shorty Pype headers going to have 2 1/2 Pypes X pipe off road with modular cats. I have flowmaster 40 series muffles on it and I am teird of the same sound I know that my x pipe will make a new sound over my stock H pipe with 4 cats but. I just don't really care for the flowmaster sound honestly. Now my main question really is would stright pipes hurt my car at all? I read stuff about reverise presure or some **** screwing your valves or bending them. I like the sound my friend has on his 92 stock exhaust gt with stright pipes turned down. Very loud when he WOT. I like it, I don't mind the drony sound that people talk about bc I have that already. I'm just scared of damage and if it would be much much louder with 1-5/8 headers, heads, and cam.