FAST Throttle Body LS 102MMAll the benefits of the current Big Mouth 102mm Throttle Bodya*? are now available for drive by wire applications, thanks to the new FASTa*? 102mm Electronic Throttle Body for GM LS Engines. This new electronic throttle body provides a huge increase in airflow over stock a** especially when running a FAST manifold. However, it maintains stock characteristics at idle. The electronic throttle body is designed to be plug and play for most stock Gen IV LS