14-09-2013, 04:15 PM
Haha you don't want any!
To cure boost creep, you can either weld up the standard internal wastegate, and fit a larger external one, or you can port/enlarge the standard one, but you may have to fit a larger wastegate flap if you go too big.
To stop wastegate creep, fit a new actuator spring.
But it's also said that fitting a boost controller can help in some cases, as it's fairly common for wastegates to start opening slightly before their set pressure i.e. if boost is set to 20psi it may start to crack open at 18psi, but if you have a boost controller set to 20psi the actuator doesn't see any boost at all until the boost controller gets 20psi.
To cure boost creep, you can either weld up the standard internal wastegate, and fit a larger external one, or you can port/enlarge the standard one, but you may have to fit a larger wastegate flap if you go too big.
To stop wastegate creep, fit a new actuator spring.
But it's also said that fitting a boost controller can help in some cases, as it's fairly common for wastegates to start opening slightly before their set pressure i.e. if boost is set to 20psi it may start to crack open at 18psi, but if you have a boost controller set to 20psi the actuator doesn't see any boost at all until the boost controller gets 20psi.