Catless is lost too.
Red line: cat oem, Oem Xpipe, terminals Supersprint Race
Green line: catless, Xpipe Supersprint, terminals Supersprint Race
Black line: how the green line with 50% meth 50% water (start 2psi, full pression 6 psi)
The gain (6000-8000) not compensates for the loss (4000-6000).