Originally Posted by Maximo

The square manifolds make quite a bit more power and RPM then do the curved manifolds...41032 smashes the 41033 just the same as a 41019 smashes a 41021........... 9853/9886 will substantially outperform the 2096 , and there will be no issue with run time, in fact the 9886 combo may even get better runtime considering your capped out looking for more top.... These 2 chamber pipes used to be the go to pipe till EFFRA forced a 3 chamber rule 10 years ago.........the rule was enacted because EFFRA wanted to slow the engines down and make every quieter.. Bad news is the 3 chamber pipes reduce power more effectively then they reduce noise......so basically racers everywhere are now running pipes thats primary purpose is to slow the engines down and reduce noise instead of pipes developed for performance and efficiency........ And no you don't increase mileage in a engine by choking off its exhaust so throw that concept out the window......