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Message: [QUOTE="uncool, post: 1265563, member: 1802"] All right Pictures helped a lot! I went back and reread your post about the gates. Keep up with me. The gate around the 71 is just the way you want it. You are controlling the speed and overall boost the 71 is putting out. The second gate, you said is on the other manifold and it dumps to open air. <--------- I think this is the place we need to start. Typically open air dumps are use to control pressure in a larger SINGLE charger set up, or a setup with a healthy dose of N2O. What pressure/how do you have your gates set? Now, if you are controlling the open air gate to limit overall back pressure, you are basically dumping all of your drive energy to outside air. This is what I would try. Disconnect the open air waste gate and take it for a drive. Use your right foot for boost control. If your truck responds to this change, start adjusting the gate on the 71 to limit your overall boost and back pressure. It will take some time and spring changes to get it right. If the open air gate wont stay closed, (weak spring) run a line with boost pressure to the top of the actuator to help it stay closed. I am still curious about you exhaust pipe routing. It looks like you built the passenger side manifold, and ran the driver side pipe up and around the back of the engine and then right above the passenger manifold and joined it to your collector flange. [/QUOTE]

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