Description Videos Reviews Turbosmart vIWG Wastegate Actuator for Mini Cooper S R56 – 6inHg Turbosmart Upgraded Vacuum-operated Wastegate Actuators have been developed to provide the maximum possible boost response for your factory frame turbocharger. The Turbosmart vIWG Series of upgraded Actuators benefit from an increased ‘Working Ratio’ over the factory equipment resulting in improved boost response throughout the RPM range. This Improved ‘working ratio’ is achieved through an increase to the effective surface area of the diaphragm & revisions to the actual springs fitted, resulting in greater leverage of the forces the actuator is working against (boost and backpressure) while still being super-responsive. Upgrading with the same base pressure as the factory, you can expect a broader boost & torque curve through peak boost being achieved earlier in the RPM and being held longer into higher RPM. These improvements can be amplified with higher base pressures. However, tuning & re-calibration is recommended for optimal performance. Features: Proprietary Silicon Nomex Diaphragm High-Grade Billet Aluminum Construction Stainless Steel Rods and Clevis Turbosmart Unique Locking Collar System This is a bolt-on fitment for the factory turbocharger as fitted to the 1.6L Prince N14 & N18 Turbo engine found in the R56 Mini Cooper S and John Cooper Works models. Data Sheet Instructions NEW! Turbosmart vIWG Vacuum Internal Wastegate Actuators! (Features and benefits) NEW for 2022! The Turbosmart vIWG Vacuum Internal Wastegate ac... 1 Review 5 All Worth It Posted by Dimitri Carty on 19th Feb 2026 R60 '11-'16 Cooper S Countryman: Orignal owner, virgin stock with a K&N filter, 70k miles. Never tuned, OEM BorgWarner (2nd), Turbo wastegate actuator failed. So glad to find a replacement solution rather than having to replace the entire turbo. Followed the directions in setting the preload to -6inHg with a Mityvac gauge which was tripple checked with wastegate fully closed ie seated resulted in 18 - 20 PSI at sea level. The simple explanation is the -6inHg suggested preload was perhaps is intended for N14 rather than for the N18 unless your goign to be tuned. N18 stock tuned I would suggest -9inHg for preload at sea level. You dont need to remove the entire turbo to replace actuator. Remove cross lock bridge, heat sheilds, and drop the downpipe for seemless access. Ordering was beyond expections, and good expereience as a first time buyer.
5 All Worth It Posted by Dimitri Carty on 19th Feb 2026 R60 '11-'16 Cooper S Countryman: Orignal owner, virgin stock with a K&N filter, 70k miles. Never tuned, OEM BorgWarner (2nd), Turbo wastegate actuator failed. So glad to find a replacement solution rather than having to replace the entire turbo. Followed the directions in setting the preload to -6inHg with a Mityvac gauge which was tripple checked with wastegate fully closed ie seated resulted in 18 - 20 PSI at sea level. The simple explanation is the -6inHg suggested preload was perhaps is intended for N14 rather than for the N18 unless your goign to be tuned. N18 stock tuned I would suggest -9inHg for preload at sea level. You dont need to remove the entire turbo to replace actuator. Remove cross lock bridge, heat sheilds, and drop the downpipe for seemless access. Ordering was beyond expections, and good expereience as a first time buyer.
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