Turbo car with stock boost? Why o’ why? Invest in that boost controller ASAP! and that’s exactly what I did. In the world of forced induction motors more boost usually means more power, of course this means more fuel wasted and a higher chances of blowing a turbo or worse your motor. I’m not going to bore you with why or what you should install but rather show you how to install a boost controller for your car. In this DIY guide, I will be installing a Blitz DSBC Dual Solenoid Electronic Boost Controller (EBC). I chose this particular boost controller because it was cheap, displays manifold pressure and isn’t one of those gimmicky electronic bleed valve setups you see on some cars.
Disclaimer: This is purely a guide and I take no responsibility for mishaps, cars catching on fire, electrical faults, turbo turbines ending up in the exhaust, blown turbos, blown motors, cracked ringlands, speeding fines, loss of license, shredded tyres, etc.. you get the idea. I suggest an experienced person install and setup the unit.
Choose a suitable mounting location for your controller, I personally like it mounted on the steering column for quick access and manifold pressure visuals.
Locate a suitable vacuum/pressure line off the plenum, connect pressure hose to it
Feed vacuum line into cabin and connect to the back of the controller. This vacuum line will allow the unit to determine the boost levels and also display them back to the user
Mount the boost controller solenoid in a secure location, close to the turbo. Usually out of sight out of mind, not to mention protects it from heat and water.
Locate a pressure source (usually pre intercoooler) and also the turbo’s internal wastegate actuator (located on the turbo itself). The stock boost solenoid is usually connected here in the form of a bleeder valve. Disconnect the lot and block off the intake return, then connected the aftermarket solenoid to this. Make sure you do not mix these around, if you do you will not have control over the boost levels.
Feed the solenoid wiring through the firewall and connect up to the unit and also the solenoid. I find it quite useful using a smaller guide wire to locate the opening then attaching the loom and pulling it through. Once you’re done, cable tie the wiring down and also loop the excess up.
Connect up the power cabling, for the positive, I prefer to connect it to the IGN source rather than ACC. This way if you need to use the radio or cigarette lighter the boost controller won’t turn on for no reason. Please use a fuse if it is not connected to a fused source.
Set the boost levels, tweak the gains and enjoy! Just a note, test the boost targets in higher gears rather than 1st as there is much more load on the motor.
Now time to enjoy the performance gains, please remember to slowly dial in the boost. Some cars do not have safety limits built into their ECUs and may result in lean outs and lead to some serious engine damage. Please do some research for the best boost levels for your particular car. If you need more detail on your specific car, comment below!