When i had my h23 swapped with an h22, the header was a different length and i had an 8 inch gap between my header and exhaust. I thought it sounded like shyt and i wanted to kill myself bekuz it was sooo damn loud. My boy that did my swap said when you run open headers like we've all played around with...for an extended period of time at any RPM above 2k, youre very likely to bent the valves. I wanted to shoot myself before i even got to the muffler shop the day i picked it up. Just my thoughts!
