I started out with 168hp and 107tq out of my stock bore and stroke B16 with the JDM DC header. After installing the header I purchesed from Mike at Battleground I had the exhaust modified to fit the new header and dynoed the car on a dynapak. The car made 192hp and 119tq. That should be around 235hp at the flywheel. Changing the header drasticly increased the exhaust flow and altered my tuning producing to rich areas that i need to take care of. I would expect that the car would make in the 180's on a dynojet. Props to Mike for making one of the greatest bolt-ons that I have seen over the ten years that i have been in the import community.