someone with the si needs to get under the car and take a pic, or Full-Race Full-Race Geoff CollegeHillsHonda may be of help here.pcd and secondary cat delete... http://rv6-performance.com/i4-downpipe.html
It's my understanding that it can't bolt up to the head as the exhaust manifold is cast directly into the head. I would figure it the test pipe (down pipe?) would replace the cat.^the link I posted was/is for the tsx. That's why there's no match. I just need to confirm if what we are seeing actually bolts up to the head because the pipe doesn't look like it reaches that high and the head isn't necessarily level with the cat-back