As a performance car enthusiast I highly recommend the manual controller from this brand .It gives me utmost control ON my engine's performance, ideal for tuning my car's engine to match my driving style. As my tests showed, this controller guarantees stable control, excellent throttle response, and added torque to my engine. Installation is intuitive, and the manual is comprehensive. The only downside i can think of is that it's slightly pricey, but with its quality, I'm sure it's worth the invSee full review