Well. I cut up my nice Greddy exhaust to get me a nice single/center exit that I can use with a diffuser. Was going to use one of the mufflers from it, but the way they are designed with an offset outlet made it unusable.
Sounds amazing, except it drone horribly at 2k RPM. Right where I cruise at in every gear. So killing the drone with the resonator pipe is even more important now. I think I have found 2.1 feet is the length. I just so happen to have enough pipe to make one. So that will be done when I get the time.
Good discussion on making one and the example was spot on for us V8 guys with drone at 2K rpm.
Exhaust Resonance Tube
I did get a change to Auto-X the car this weekend. Car did alright. I didn't have super high hopes as I haven't really done anything with the car since the swap and even since RB kit was installed. Fasted time was an 81 sec. Few faster cars. Even an FRS. Though he only drives the car on the track and does it all the time. So he knows his car extremely well, and it's well set up for Auto-X. 77 Seconds.
I was surprised at how well the car did at not trying to flip around. Once I got used to the course, I really focused on the car. I started noticing the traction control light would go off and I could feel the car slow down. My rear rotors were significantly discolored after the runs. Got a few fun runs in after the even where I could play with the car. Sure enough, if I turned traction control off, the car would hang loose/slide around with 0 issues. So even though it has no control over throttle, it will still grab the rear brakes. This leads me to believe that is where my loss in power is coming from in the times playing with friends.
I would just like the point out that I didn't put the numbers on my car... That "6" drives me nuts haha