i was going to post this in the appropriate thread but i would have waited to hear houstons reply before i made my choice he seems to have nearly tried and played with every combo possible so im after some info on the new 3005 pipe line and how it would compair to the 9901 on both the Toro and +4 now im after what would be smoothest and most fuel efficent pipe for both those motors i just picked up a Toro Neo yesterday for me 5Tand plan to get the +4 for me 5R very soon, so best pipe combo for economey and best power setup would be much appreciated