I have an 06 STi with mods in sig, I didn't really notice any bog when I got the car back from installation but I babied it for a couple thousand miles before really getting on it.
When racing, after quick shifting there is a brief bog/stutter that is really annoying. Is this common? Are there any known fixes? I called my tuner but he wasn't available, but his assistant claims it's a result of the recirc air being dumped back in front of the turbo which stalls it for a sec... idk. Any help or shifting suggestions would be welcome.