Perry exhaust

[Ice88]

Originally Posted by BG1.8sp

I do not understand the comment about drone on freeways? Lol

I drove over 2 hours every day on freeways.
No drone what so ever. Under acceleration it was a tad drony. Butexpressways was quiet as a mouse.
I would say that drone was due to echaust leak

You have the stock crappy header. Difference could be attributed to difference in velocities