After installing my Terraflex exhaust spacers I sometimes hear I really harsh exhaust noise on hard acceleration. I only notice it with my rear window out and driving next to something to reflect the noise back to me. I don't hear it with the windows up so it's not like it's reverberating through the frame, just changed the exhaust note to something... unpleasant.
Has anyone else noticed a different sound from the exhaust during acceleration?
Here are some pictures... not of the noise.