You know, using all caps is considered yelling...but after 10 years of open exhaust I can see why you would need to yell
If you dont lean the engine out from the free flowing exhaust then it wont hurt anything....other than your hearing, and your wallet when you get tickets all the time, oh and brain cells from all the exhaust fumes not getting vented out from under the vehicle.
I just read the latest Car Craft, and they did a test with three different exhaust systems on a Mustang with a 400hp 302. With open exhaust, it laid down 333hp at the rear wheels. With an H-pipe exhaust, it laid down 323hp. And with an X-pipe exhaust, it laid down 335hp. So, it appears the days of benefitting from and open exhaust are over, technology has found yet another way to improve upon old thinking.
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