By combining atmosphere venting with the proven performance benefits of our ground-breaking DV+, the VTA delivers an aggressive blow-off sound, improved throttle response, as well as superior boost holding and reliability. The integrated low-profile solenoid ensures a direct fit installation. With its low-profile integrated solenoid and compact design, installing the T9488 is a breeze. Just swap out your factory diverter valve with the VTA, and you’re good to go! T9488 is a direct bolt-on for most Mercedes turbo petrol vehicles. Twin-turbo engines typically require two valves. For specific fitment information head to GFB.com.au