Downpipe sizing (twin sxe s369)
Downpipe sizing (twin sxe s369) Im getting ready to start on my hot side piping and am wondering what would be a good size for the down pipes. I've read that the rule of thumb is 1.2 x turbine size. With the 73mm turbine, that puts me at about a 3.5" down pipe. Just making sure that's the way to go before I order these over priced marmon flanges. Would 3" hold me back? Is 4" too big? Any advice is greatly appreciated. Build specs are below.
402" forged lq9 (10.6:1 cr)
Afr 230cc heads
Ljms custom cam
Twin sxe s369
E85 (alcohol eventually)
402" forged lq9 (10.6:1 cr)
Afr 230cc heads
Ljms custom cam
Twin sxe s369
E85 (alcohol eventually)
