Thank you !
I did make a before and after chassis dyno run.
I'll post several photo's of the pipes and dyno sheets on a new thread but, here's a preview. I'll mark the numbers with a pen as where the increases were at different rpm's on the new thread. It's around 12 hp at the lower and 30 + up higher. The old mufflers were surprisingly open, with the same type louvers, just smaller.
I wanted to enlarge the sheets but man, how did I do the bottom?
Still learning my new printer/copier.
