The High Velocity Upper Intake Manifold Insert replaces the factory plastic runners in the upper intake manifold found in FWD Series II and III 3800's. All you do is simply remove the upper intake (leaving the throttle body attached), pull out the stock runners, set the HV insert in the intake and bolt it back down! 30HP in 30 minutes!

By changing the intake tuning we are able to achieve performance numbers previously unheard of in the L36. In short we gained 9 peak WHP and 30 WHP at 6000rpm.

More torque - The HP gains of the old HV2 were quite amazing. The only issue was a slight loss in low end torque below 2000rpm. The revised design has a slightly longer runner and a smoother transition to the head ports so the torque loss is near zero compared to the stock runners!

More reliable - The HVx does not require RTV, cannot be seen by anyone looking at your external engine, and it comes with a new intake gasket. Installing the new HVx actually improves the reliability of your car by replacing a potentially worn out gasket. Because it sits entirely inside the intake, there are zero sealing issues.