Invidia paid attention to detail when making their up pipe. If you look carefully at the design there is an EGT bung which eliminates the need for a CEL fix. Works with stock setup and any setup which can mount to the factory up pipe. You'll get a lot of performance for the cost with this product.

Invidia Up Pipe with EGT Bung

SPECS:

• Durable 304 stainless steel construction
• Built-in EGT bung provision
• Allows for unobstructed exhaust flow starting at the turbocharger
• Improves the throttle response while improving the horsepower and torque
• Designed for the factory turbocharger flange
• Includes new turbo studs

RENEW THE PERFORMANCE IN YOUR STI WITH AN INVIDIA UP-PIPE

This is the Invidia Up-Pipe. This up-pipe makes for an excellent exhaust upgrade as the factory up-pipe can rob you of power and performance. Over time and mileage, and several heat cycles, the insides of the factory downpipe can break apart which can block the flow path of the turbocharger. This can make your vehicle feel weak and down on power, while your turbocharger works harder to reach boost levels that fall short of your factory settings. This can also cause premature wear to your turbocharger while creating an excessive amount of heat from the factory up-pipe. Invidia relieves this issue with their up pipe as it has been designed with a smooth bend to allow for unobstructed exhaust flow starting right at the turbocharger. This will allow for a better turbo response which will also create more horsepower and more torque.