Hi Dude,

Going to write some review about this D1 spec throttle controller for Howie.

Last few week, just done a whole car soundproof with howie, after soundproof feeling the 30++KG soundproof materials is quite heavy for the car. The car not really willing to push now. So decided to visit Howie for the solution to gain back some pick-up.

Right after installing the throttle controller, immediately feeling the engine rev is faster, accelerate is lot faster with sport mode. No more feeling lag on Auto car.
Press a little bit then the car is pushing forward now.

On econ mode, well. The FC is improve significant. Normally 1 tank i can go for around 400-420KM on my civic, tested with econ 3 mode (Not really put into econ 5 yet, i believe econ 5 is even more fuel efficiency) . Tested with econ 3 mode, manage to increase 50-70 extra KM. That is good for me.

Well on econ mode, feeling the engine is smoother, slowly accelerate although u pressing full pedal on it. Good for a heavy pedal person for me. It help u to control ur foot.

Overall, with the half price compare of the sprint booster, definitely a worth purchase product. I believe both product working on same way.