Well the pipe I run is the vantage pipe (
http://www.vantageracing.com/site/fl...nd_default.htm) I have upgraded my motor from NX-15 to the 2.5 Turbo 1.8hp @ 37,000 rpm. Although this baby scream I still get dusted out the blocks by my friends running .12 engines 1.6hp @ 43,800rpm. I have just recently purchased a .12 engine to compete with them.