Hey Erick, any problems with people that add both headers and a larger pulley?
Mine was fine until I added both. Although both were custom, 192mm pulley and long tube (3-1 collector under car), I got detonation, and am having to rework my EFI and tuning. If I remember correctly from benzworld that SteveL had similar detonation with his FF shorties. I would assume that if you had both pullies and headers, that tuning isn't just "optional" anymore... is this a correct assumption?