Morris has a mini tuned silencer that I am considering. I agree with the previous postings as a waste for 3D "but, My interest is in the throttle responce off idle. This pipe mentioned is suppose to greatly increase the responce time from idle to full bore which will benefit 3D. I dont have one but like I said Im considering..One other benefit is claimed 1000rpm more which might or might not trip yer trigger..My 46 can use more punch and this pipes lighter also..Walt