Product Info: Here
Price paid: $139.00
Installed on: 1987 BMW 535is with custom turbo kit
Purchased from: Ebay seller - d2power
I had been using a ball and spring style boost controller in my turbo 5 series. I generally found it to be a royal PITA to dial in my boost and if I wanted to change it, it required me to count turns and hope that I got it close. It just wasn’t working for me. In my 240sx I am using a Greddy ProfecB, which in my opinion, is one of the best boost controllers ever made. I wanted something that worked as well, but didn’t want to drop over $200 on a used unit. After searching I came across an electronic boost controller by Hybrid Power which seemed to fit the bill. It has a low and high boost setting with a selector switch and simple knobs to dial in the gain for each channel. Simple, extend the knob, turn it until your boost is where you want it and push the knob back in. It also has a feature that if one wire is grounded through a switch, it will increase that boost setting by ~10%. Pretty neat feature.
Initial impressions:
The product arrived in nice packaging and upon opening it; I was highly impressed with the quality. The unit feels very well built and the solenoid is a nice, made in the USA, MAC unit. The selection of fittings and silicone hose was also very nice. Overall, it seems extremely nice for the price. Installation was very easy as a quality wiring harness with nice connections is included. It included harnesses for both power and the solenoid.
On the road:
With the unit installed it was time to take the car out for a spin and see how well it holds boost as well as determine any improvement in spoolup. My wastegate is set at 5psi, and I wanted to set it to 8psi. I found an open stretch of road, and in third gear began to turn the boost adjustment dial until I reached my target of 8psi. It builds boost about 200rpm sooner than only the wastegate (plus is a higher boost setting) and it holds rock solid all the way to the 6800rpm fuel cut. I have not yet set up a high boost setting as my fuel maps are still untuned above 8psi, but I anticipate setting it at 12psi.
Conclusion:
The HDi Super Boost Controller Type D is a great product and I find it amazing that it sells for as cheaply as it does. I realize that it is made in China, but it is high quality and works remarkably well. It is easy to use and gives the desired results. If anyone is looking for a quality electronic boost controller that is almost cheaper than some of the fancier two stage manual controllers out there, then this unit would be perfect.
