ABT Sportsline Pre-Muffler Replacement Pipe | Audi B9 / B9.5 S4/S5A Global Company with 121 Years of Experience ABT Sportsline is the global market leader when it comes to enhancing cars produced by the Volkswagen Group, sold in more than 50 countries worldwide. The way the company is developing, with all its engineering skills and feel for a sporty and dynamic design, could not be foreseen in 1896. Nor could the later motorsport successes in the "Super Tourenwagen Cup" or the GT Masters. Five driver championships

0" on non-sport A4's

If your current flange has 1 sensor and 1 plugged sensor hole select the 1 sensor flange to eliminate the need for an extra plug

BoostValve kit to fix overboost spikes

The dotted line is the vent exiting the N75 which is routed back into the air intake path before the turbo

Unitronic Direct Fit 2

Febi Part #  46486

Part # 07K-121-065-P / 07K121065 P / 07K 121 065 P

this is the adapter you need

Sport+ - Loud Burble

OE Part # 51358125204 / 51-35-8-125-204 / 51 35 8 125 204

they are zinc coated to ensure long life

P3 Analog Boost sensor - plugs directly into gauge harness