AWE GTi | GLi | Audi A3 2.5" Downpipe w/ Ceramic Cat (NLA)
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AWE Tuning Product Description
Thorough long term street testing has confirmed that our high flow downpipe, whether equipped with with the 400 cell ceramic catalytic converter (for FSI) or the 200 cell metal catalytic converter (for both FSI and TSI), will not set a Check Engine light or any fault codes in the ECU.