I'd love to... unfortunately, changing tunes and then doing the OAR relearning takes too much time on the dyno and I don't want to annoy Cobb too much. A simple $80.00 dyno test against baseline becomes a half day, $250-$300 tuning session. lol. I think any power/torque gains if any on an OTS map will be great. Just wondering at what point the OTS map gets overwhelmed by mods and needs a tweak. Even if exhaust shows minimal gains it could just be that it goes beyond the OTS tune directives and a new tune needs to be developed so that these mods will work optimally. That and I am really digging the long term fuel trim and learning that my car has on the 93 octane, stage 1 tune now with the exhaust in place. I'm almost afraid to switch back. heh