Hello all. I just put a new throttle body and map sensor on my B16 SiR-II. The throttle is 70mm, and my old one is 60mm. Now when i'm pressing the gas to full throttle, i lose power, like the engine can't do that. Could this be because my intake manifold is still small (60mm i'm guessing) and the map sensor is reading wrong then. Or could the map sensor be faulty. I had to order a new map sensor, so this one i'm using is from ebay. JDM to USDM throttle conversion... Aside from that, i installed 4-1 headers in the same job, but i'm really doubting that's the problem, but worth mentioning. Thanks for the advice!!