BMR 98-02 4th Gen F-Body LS1 Throttlebody Water Bypass KitIncrease power on your 1998 2002 F Body with a Throttle Body Water Bypass Kit from BMR Suspension! GM cars circulate hot coolant through the throttle body to prevent throttle blade icing in cold climate conditions, but this is often not needed for cars in hotter climates. BMRs Throttle Body Water Bypass Kit for LS1 Engines (TB002) allows you to bypass your throttle body coolant passage and is designed for street performance, drag racing, and handling