Dave's Evo X Build/The Life of Dave blog

[Shane@DBPerformance]

We run them that same way on some originally internally gated turbo cars. There is a possible downside and it is turbo failure. If your turbo fails and the manufacturer figures out you were doing that, then they might not warranty it. The internal gate is somewhat is a safety feature to help save your turbo, when the exhaust back pressures get way too high, it blows the internal gate open and slows the turbo back down some(boost drops). A lot of people try to push these bolt-on turbos farther than they were designed to make for boost and power for more than a few 1/4 mile passes and that's when you can see failures.