So two people who sell Power Pros pipes and not DG pipes told you. Does this guy from New Jersey go by the screen name Mudbogger? If you know the screen name Litespeed, He had an FL350 with a DG pipe. I had a Power Pros on mine at the time I saw his machine. He insisted the DG made better power. I don't know if he had tried the Power Pros before or raced against someone. I didn't believe him at the time. I thought it was just a matter of him talking up what he had bought. It probably did spark my curiosity though to find out for myself. Back when Kiowa's Odyssey Pilot board was up, this was discussed and it was readily accepted that the DG was the winner.
I have actually spoken to Randy about him making the statement that the DG is a stock replacement pipe. I think he just thought it may be the case at one point and over time, it has become fact for him. He always refers to the power pros pipe as a Triple E because Triple E worked with power pros build to build the first pipes. Randy was getting his pipes through Triple E before they retired. If pilot odyssey performance thinks the Power Pros pipe is so great, why did he not run one on his own Odyssey? The one he sold on eBay for $6k+ did not. It had an FTZ pipe on it. Although I have never run an FTZ mysef, based on the performance of a machine I saw with one, it outperforms the power pros. It seemed to have power characteristics similar to the DG.
I don't think the power Pros was much quieter than the DG. Maybe I will pull it off the shelf this weekend and do a sound test with it since I have the meter.
I have also run a Kustom Kraft pipe. Kustom Kraft was big back in the Odyssey racing days. It has a hand built pipe. The power of that was the same as the DG. The DG has the same cone dimensions as well. DG not being known for doing extensive research may have copied that pipe's cone sizes, just routed it better. I did not think much of a pair of DG pipes I had on a Banshee. The FMFs I had later were better pipes.