The Turbo Engineers, Turbo Selection More TTE550 data April 22, 2016 Jeffrey Jones As I am continuing to refine the initial tune, a 22 psi boost profile for the TTE550’s, the boost onset data is concurrently accumulating. Shown below is the boost profile and then next the TTE550’s vs K04’s. TTE550 Boost & AFR (Tune Revision 3) TTE550 vs BWK04 Boost Onset Related