Installtion of the cam phaser lockout kit requires custom tuning, so we are offering the limiter / tuner combo which has the appropriate values changed to ensure your vehicle will run properly after installation.

• Locks cam phasers in fully advanced or fully retarded position
• Eliminates possible piston to valve problems with aftermarket camshafts
• Eliminates possible cam phaser failure in high HP applications
• Billet aluminum construction
  
  Typically, for a N/A vehicle, we would recommend the limiters because the lockouts will cause a loss of power that may not be a big deal in a power adder car, but will be noticeable with a N/A car. The cam lockouts were built with the goal of preventing failure of the cam phaser. They do an excellent job of this and cure cam phaser issues, however they do limit the engines ability to retard the cam timing and as a result, cause a small loss in power at high RPM. In most cases we are talking 10-20HP depending on the application. That loss in power was worth it, given the gain from using aftermarket springs and cams was double that number. Not to mention, with power adders vehicles making 600+ RWHP, the loss of 10-20 HP was small for the gain in durability and ultimate assurance that the cam phaser would not fail causing possible engine failure.
  
  If the phaser is already bad, installing the limiters won't fix the noise, so a full lockout may be your only choice.
  
  Simple in design and requiring no special tools to install, the limiting lockouts allow for the phaser to retard the camshaft still but limit its travel to only 20 degrees maximum. In most cases max power can be found in the 8-14 degree range of retard, so by still allowing up to 20 degrees of camshaft retard, the ability to get maximum power from cam phasing is available. The limiter mechanically locks after 20 degrees and prevents any further movement. This allows for use of larger camshafts with more lift and duration and prevents piston to valve issues. The other benefit that goes with the limiter is that it prevents the noise and durability issue from becoming a factor. By reducing the volume of oil and limiting the total travel rotation of the phaser the issues with noise and failure of the phaser are eliminated.