Upgrading the TURBINE TUBE, also known as the downpipe will have the greatest impact on the 1995-1998 Nissan 240sx 240SX S14 turbocharged vehicles. Turbo efficiency, power, and response is greatly improved with a more free-flowing turbine tube. Each downpipe has an EGT Bung with cap for those who wish to monitor exhaust gas temperatures without having to drill into their downpipe.