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ER10BIR-6 Brisk Iridium Performance Spark Plugs
What do the rear plastic pads do
The reason being is since you can use a boost reference on both ports you can use this boost to hold the flapper closed until desired boost pressure is reached
This package is centered around our recommended starting point for improved handling and performance:
CTS Turbo 2018+ B9 Audi S4/S5 V6T 3.0T (EA839) Downpipe Add High Flow Cat::Yes ER10BIR-6 Brisk Iridium Performance SparkCTS Turbo B9 S4 S5 3. 0T (EA839) downpipe is made to maximize exhaust flow for highest power gains. Do not compromise performance and sound with factory parts unleash your B9 S4 S5 3. 0T potential! Designed using the latest in CAD technology; this part is made to fit perfectly in place of restrictive factory catalytic converter. Manufactured from T304 stainless steel, hand TIG welded and back purged to ensure years of reliable performance. In addition
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