When talking with the Lotus corporate tech (Dave Simkin- Esprit guru), he told me with certainty my 2003 would have been built with the HTU ECU. However, his point of view seemed to change over the three years I've had informal chats with him. Maybe there is legit ambiguity on which came equiped and which didn't, if my "experience" is any indication.There's a lot of misinformation. Only Final Editions and S350 came standard with the High Torque ECU. Considering the High Torque ECU also fixes several issues, a large percentage of V8s have the HTU by now.