[Mj_Stakis]

I have problem with evolution wastegate.

I connect boost to the bottom port and boost with MBC to the top port.

The boost come quickly to 0.7bar at about 3000rpm and WG opens slightly, after opening the boost slowly rises to 1.4bar at 7000rpm.

I need the boost to come quickly to 1.4bar at 3000rpm (maybe some overboost to 1.5). How to connect, modify? set the boost? Do I need Electronic boost controler to see this perfectly? New spring, etc. (I believe I got WG with 8PSI spring)?

[Robert]

Originally Posted by Mj_Stakis

I have problem with evolution wastegate.

I connect boost to the bottom port and boost with MBC to the top port.

The boost come quickly to 0.7bar at about 3000rpm and WG opens slightly, after opening the boost slowly rises to 1.4bar at 7000rpm.

I need the boost to come quickly to 1.4bar at 3000rpm (maybe some overboost to 1.5). How to connect, modify? set the boost? Do I need Electronic boost controler to see this perfectly? New spring, etc. (I believe I got WG with 8PSI spring)?

any mechanical form of boost control is going to have the valve cracking open just befre it should. Its a side effect of running in a manual/mechnical fashion. That's why Electronic boost controllers are so popular. They allow the wastegate valve to remain closed until the absolutely last second and then force the valve open. If you want the absolute tightest control of the wastegate I would recommend picking up an electronic boost controller. Blitz makes a very nice unit as does HKS.