Features •The Plumb Back systems vents all excess pressure back into the intake system •Great for the enthusiast NOT wanting to be noticed •The Kompact Series BOVs have been designed as a bolt-on replacement for plastic factory Bosch or Denso BOVs Tech Tip To adjust the Turbosmart BOV, rotate the cap in the SOFT direction up to, but not beyond, the indicator groove. With the engine at idle, the exhaust port should be closed off by the piston. Free rev the engine and back off quickly. The engine should return to normal idle speed - if the revs drop below idle or engine stalls, increase the spring tension by half a turn. Repeat until the engine free revs and returns to normal idle speed. Test drive the car. If the engine backfires or stalls upon deceleration or gear changes, check all BOV connection, prior to increasing the the spring tension again. Direct replacement meaning no fitting kits or modification required for original valves on the following cars: Audi - A3, S3, A4, A6, TT - 1.8T Citroen - XM 2.0L Fiat - Uno Mk1, Mk2, Punto GT, Coupe 16v/20v Ford - Focus RS, Sierra Cosworth 2WD/4WD Lancia - 2.0L Delta Integrale 8/16v, 1.6L Delta HF Peugeot - 406 SRi, 605 SRTi Porsche - 911 (964 engine), 944 Renault - 21 Saab - 900 Turbo, 9000, 93, 95 Seat - Ibiza, Leon - 1.8T Skoda - Octavia 1.8T Volvo - 440, 480, 740 VW - Beetle, Golf, Jetta, Passat, Bora - 1.8T
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