For the first time in about 15-20 years, I plan on running this Saturday at the PID reunion at Pittsburgh Raceway with no exhaust system, just headers. The only reason that I'm doing this is for my brother. He has always wanted to see me run with open headers and I don't get to see him much. This weekend he is coming in from out of town to watch me race. I'm thinking that the performance won't change much, just the noise level. What do you guys think?