3" cat back exhaust.......?

[OHstinger]

Please do! It will be very interesting to see real life results. Also, I believe the most, if not all of backpressure comes from primaries. And it looks like turbos need it for proper sealing. There're a lot of reports of leaking turbos, once primaries removed and replaced with free flowing sections.

I have my primary cats still with my system, no secondaries however. My only issue has been overboost on a couple occasions. But I blame that on not being tuned or having a JB4. KSR will most likely be doing a custom ECU tune for me in the summer.