APR Bi-Pipe for 2.7T

The APR BiPipe Kit for 00- 02 S4 and 00 - 04 A6 models. This Pipe assembly eliminates any and all reliability issues of the 2.7T throttle body boot. This cast aluminum pieces features recirculation valve ports that are enlarged, which helps in reducing boost spikes during gearshifts and improves turbo response after the shift. The BiPipe bolts to the throttle body and is sealed by an O-ring.
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