2006 Noble M400 #141

[asshanson]

No, I haven't, I can try that but I doubt it would help. The Borg Warners have an electronic boost control solenoid on each turbo. Compressor housing hooked to input, and wastegate to the output. With a fresh air port that is unhooked. The electronic boost controller is also T'd to the front turbo compressor housing. It should hold the solenoids shut until a certain boost level, then let the wastegate see the boost.

According to Borg Warner docs, the boost solenoids default to open if they aren't activated. So worst case, I just run with wastegate spring pressure. But I guess it doesn't hurt to just unplug the wastegates altogether, and plug the solenoids so I don't have a boost leak there. Shouldn't take long to test.

But even with open wastegates, I think I'd build at least a couple psi by 6k rpms. But these Borgs do have pretty huge internal gates, so who knows.