i'll try to sum this up. i have a h22a with an h22a4 ecu. i'm getting misfires all across the board, but with no other codes. along with this, i'm experiencing poor fuel economy as well as a thin white smoke coming out of the exhaust when i accelerate in high rpms (and no, it's not coolant). i have a new exhaust and headers waiting to be put installed but i want to get this resolved first out of fear of the new exhaust getting clogged with unnecessary deposits. any help would be appreciated, thanks.