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In addition to flow bench testing
It is nearly impossible to remove the stock pulley without the correct tool
IE engineers have incorporated much higher-quality reinforced flex section designs used by many stock exhaust units in factory designs
Garrett PowerMax™ turbocharger direct-fit upgrades for the Volkswagen and Audi 1
Integrated Engineering Performance ECU Tune | B9 A4 · A5 B5 Passat 2.0L TDI I4 In addition to flow benchAdd significant increases in performance with up to 314 horsepower and 396ft lbs from an IE Stage 1 ECU Tune for your Audi B9 A4 or A5. Flash instant horsepower gains, increased torque, and faster acceleration with octane specific map options for 91 and 93 octanes from your Apple or Android phone or Windows 10+ laptop. Engineered to operate on stock hardware or compatible with intake, intercooler, and catback exhaust upgrades. Ready for more? The IE
