I was looking at voodoo's but read you had to have a PC5 or a dyno, so I ruled them out, I was wondering if it was the same for coffmans.

No you don't need a PC5 but it's up to you if you want to have it put on the Dyno to make sure you air fuel mixtures are fine. Mine were great but I'm going to get a PC5 in the future just for the tune ability of it.

Good to know. I really like the look of the voodoos and and coffmans. I was just trying not to dump that much money into exhaust and PC5 right away.