![Integrated Engineering ProCore Downpipe | B9 S4 · S5 E36/7 · E36/8 Z3 19i 1.9L I4 [M44] APR's Mechanical Engineers created the](https://cdn.shopify.com/s/files/1/0635/0032/1015/files/IntegratedEngineeringProCoreDownpipeB9S4_S5.png?v=1693418463)
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APR's Mechanical Engineers created the ultimate and final upgrade: The APR Solid Shifter Cable Bracket
High temperature
precision engineered with smooth mandrel bends
IE Flash Wizard Software allows the IE POWERlink Tool to communicate with your vehicle's ECU to flash software tunes
Add instant power
Integrated Engineering ProCore Downpipe | B9 S4 · S5 E36/7 · E36/8 Z3 19i 1.9L I4 [M44] APR's Mechanical Engineers created theThe IE ProCore Downpipe for your Audi B9 S4 or S5 delivers an improved exhaust note and increased flow. Our in house engineered 6" 400CPSI catalytic converter channels substantial flow to support upgraded engine tunes and larger turbochargers. The specialty tri core design and precious metal coatings align with ECU emissions requirements so that you can upgrade without the check engine light. IE's in house engineered ProCore Catalyst features our own
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