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Manual Boost Controller and wastegate adjustment
#19
De-wastegate: Car can produce as much boost as it wants as it's deregulated. It also means every last drop of exhaust gas spins the turbine, which produces silly heat and can drastically shorten turbo life. All the while the turbo is spinning up at silly high speeds, the compressor isn't efficient enough to flow more than a maximum rate of air, so while the turbo is running itself into an early grave, there's no real benefit past a point. Welding wastegates just means faster spool and crazy bad heat/stress

Wastegate and MBC: wastegate stays shut until the desired boost pressure is reached, pretty much no wastegate creep, turbine spins up to peak RPM's for your desired boost pressure, excess EM pressure is diverted out the wastegate and down the exhaust, turbo is happy for a long time. It also controls boost very well, as opposed to a de-wastegated blower that does whatever the f*ck it wants until it decides to overspeed the turbine, bits break and everyone gets sad.

Ruan will back me up on this. If you want big boost pressure, fit a stronger actuator spring and an MBC. Don't just de-wastegate it, i'm the king of all rednecks and even I wouldn't do that after learning the hard way.

/rant
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RE: Manual Boost Controller and wastegate adjustment - by cwspellowe - 26-04-2013, 09:54 PM

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