What is the average a 20v is making i've already made around 105rwkw with my setup but my exhaust is to restrictive (you could tell by the dyno sheet) so i have to run a 3 inch system and yes it is n/a. I garrantee most of you are running 4-2-1 extractors (good for torque) with 2-1/4 inch pipe one resinator prob a hot dog and one rear muffler, if this is the case you may need to change it, sure my engine may have more work done to it than most but it's not to serious it has around 195-200 hp at the flywheel approx but i have changed many things so it might have more now