jonvr4g63

Yasin, this is the area in which most of my porting took place. By removing that fire ring step, the dp is opened up to 3in. Your fist bend on the dp fit into the space and the tubing used was 3in out side diameter.

Thanks Yasin!! I really really like how that exhaust came out... although it was a bear making fit! Going through the rear sub assembly is something that I don't have to practice since most of my exhausts are on either DSMs or Evos. I think this particular system is probably my favorite sounding of all the systems I have built. That Burns muffler really set it off. I am going to see about getting it reproduced in 3.5in 304L stainless steel. I know there has been some debate as to why I kept the cast downpipe. The main reason why I kept it was due to the fact that it goes 2.5in to 3in with a GRADUAL gain in size. This keeps the hot gasses from tumbeling and causing turbulance. By keeping these gases happy, you will gain spool up, and have a nice and tight dyno graph. I ported this cast iron downpipe and really took time to clean up the casting flash. I think it flows very well now, and def will support some good power.