Boost creep question

[Strat42586]

Greddy's TD06 kit for the MR2 warns about boost creep with exhaust systems that are more free flowing (ie replace the b-pipe). ATS has their TD06 kit that dumps to the atmosphere (my assumption is that it eliminates the bootst creep). If I go an purchase KO racing's Street Brawler kit and put on their 3" TKO system, should I expect boost creep?

[MR2Jedi]

boost creep will be controlled by your waste gate....

[MRQtwinturbo]

if ur going with an external wastegate...u shouldn't have any boost creep....

[JekylandHyde]

Boost creep occurs when you are flowing more exhaust than the WG can handle.
The LOWER the boost pressure you are running, the more the WG needs to evacuate.

That being said, if your WG is insufficiently sized for the amount of boost you are trying to run, you can see/expect boost creep regardless if it is an internal or external WG. An external is less likely to creep.

The problem most people have with the TD06 is they try to run 14-15 psi on it which requires more of the exhaust to go through it's internal WG and it gets overwhelmed. The excess exhaust goes through the turbine producing more boost (hence creeping).

If people would just set the car up to run 18-22 psi, they would be less likely to creep