Its more than what they said
I could not believe the differance in performance, I have gained so much more pick up and power ,its unbelievable. Im not just saying this, I would'nt have believed it if I had'nt bought one for myself and installed it in my own truck.(2002 Mazda B3000 3.0L) The whole process,delivery etc,was more than expected. Bottom line I'm impressed!!!
Not sure of improvement
There is no immediate and noticeable improvement. However, I may not be doing the product justice in that I haven't done a complete engine upgrade due to cash constraints. I have already installed a K&N inlet system along with the Jet. I plan to do the cat-back exhaust change-out at a later time. Still debating if I have to do the Air Mass Flow sensor and pulley replacement to get the full effective improvement offered by the Jet Module.