Titan Motorsports 4 port boost control solenoid kit
What is a 4 port electronic boost control solenoid?
A 4 port electronic boost solenoid is a solenoid with 4 ports of entry/exit. Unlike the 3 port controller above this one has the ability to have one more extra port that we can use to manipulate our boost control. The wiring of the solenoid is identical to a 3 port or even a 2 port solenoid. >br>
When do I need to move to a 4 port controller over a 3 port?
Many people think that there is no reason to ever use a 4 port controller. They say that with wastegate springs up to 21 psi there is no need to use a 4 port boost controller. This is because with a standard 3 port controller you should be able to get 40-55 psi of boost with a large base spring; Unless you're running a diesel engine than you should be good to go, but that is not the case. The problem with that sort of thinking, is you are now required to run 21 psi spring as a minimum boost pressure to be able to obtain boost as high as 40+ psi. While this may not have been needed years ago when 600 wheel HP was rare and traction was not a problem, that is not the case now. The scene has changed and turbo design has also changed to favor higher P. R. ratio’s. ECU’s, fuels, tuners, and parts have become better engineered and people are making more power than ever, but that doesn’t mean you want that power all the time. Traction is becoming the bigger problem than making power now.
One of the newest popular forms of racing spreading across the nation right now is “no-prep” type racing. In this type of racing it is more about traction management than it is about making monster amounts of power. These racers are often starting out with as little as 8 psi on the starting line, and wanting to finish the race with 40+ pounds, where the power can finally be put down at the end of the race track. A 3 port boost controller will not allow you to run a small wastegate spring and still obtain that level of boost pressure. This is where a 4 port comes into play. Yes the resolution of a 4 port isn’t as good as a 3 port, but having less resulotion isn't as much of a big deal when you have such a large spread from min boost level to max. For many racers the loss of resolution is easily worth the gain in min-max ability of boost . For street driven cars, especially FWD cars, this is a HUGE advantage. These big power street cars, or traction limited FWD cars, can go from being absolutely worthless burn-out machines to somewhat manageable.
AEM infinity
Universal
AEM ECU
Specials ...
