According to Lexus the GS400 supposedly makes 310lb/ft of torque. I remember reading an article on the web saying that BMW's V8 engine produces significantly more torque on the Dyno when compared to the GS400's V8 (even though the factory specs are very similar). According to the dyno the BMW V8's produced near their factory spec torque figures however the GS400 was only producing 260lb/ft of torque (50 lb/ft less than what Lexus quotes. Then I went to www.swift-racing.com and according to them the GS400 WITH the supercharger makes 314.4 lb/ft of torque. That's only 4 more ft/lbs of torque than Lexus quotes for the Stock GS400. So apparently my stock GS400 puts out much less torque than Lexus quotes.