How to make a manual boost controller

 · Take the Sharpie and mark the center of the plug. Take the center punch and small hammer and indent the center of the plug. Use the center punch and hammer to indent the middle of the flat side of the tee. Use the 3/32 drill bit to drill a tiny hole on the flat side of the tee.  · As requested, I made a tutorial to illustrate how I build these "ball spring" type manual boost controllers in a pinch. They are exceptional devices when b.  · External Wastegate Setup. Allow the engine to cool down before installing your boost controller. Locate the bottom port on the external wastegate and the pressure source port. Install the Boost Tee in the wastegate pressure line with the wastegate arrow pointing towards the bottom port on the Estimated Reading Time: 3 mins.

So I finally got around to installing my manual boost controller. And, long story short, it only sorta works, hahahaWith the controller hooked up but adjusted all the way out (so, opening at very low pressure), I pulled 3rd gear and boost response was as per usual. Turned it in a few turns and repeat, same, did this a few times in fairly big. The stock wiring harness will reach, but make sure the longer side fitting on the N75J faces the intake tube. The N75J is not only worth about 2 lb. of boost (about 25 horsepower on the T) over the original N75, but its more sophisticated design will help to reduce compressor surge and generally help the engine to run smoother under boost. Boost pressure is delivered to the actuator via a small hose from the compressor outlet, thus forming a control loop. As the boost pressure rises, this pressure begins to open the wastegate via the actuator to slow the build up of boost until the set level is reached.

Materials needed: 1 x 1/8" NPT 1/4" Barbed Nipple (Male Fitting) 1 x 1/8" NPT 1/4" Barbed Nipple (Female Fitting) 1 x 3/16" Ball Bearing. 1 x Utility Spring. 2 x 1/2" Hose Clamps. The barbed fittings are used from compressors, but you should screw them onto each other so that you have a nipple on each end. The spring and ball bearing go inside so that essentially the spring presses on the ball bearing firmly against the inside of one of the fittings to seal the hole off. How-To: Make Your Own Manual Boost Controller 1. Cut the top part off the coupling using a hacksaw as shown. I will refer to this piece as the "Cap" 2. This is what the Cap will look like after being cut. Discard the piece you cut off. 3. Since the hole thru the fitting is already slightly over. External Wastegate Setup. Allow the engine to cool down before installing your boost controller. Locate the bottom port on the external wastegate and the pressure source port. Install the Boost Tee in the wastegate pressure line with the wastegate arrow pointing towards the bottom port on the.