Throttle Shutting Under Boost?

[openboost]

hey guys,

just wondering if anyone knows about this problem??? ba xr6turbo stock. when under boost at top end of 2nd gear but mostly in 3rd the throttle shuts on me . almost like a limiter but more aggresive... if anyone knows or has an idea what it could be?

[JTXR6T]

Could be overboost? Or could be leaning out if fuel is low? Have you got any mods at all? Someone else can probably shed some light

[openboost]

nah does it with full tank and set on factory tune I wouldn think it was hitting boost cut? its stumped me .thanks though

[Mr_4.0]

Does it do it if You ease on throttle? Or only when stabbing it to the floor?

[xr6t4life]

I have gotten this once on a cold night in 3rd or 4th gear about 5400rpm its just like a limiter but as u said a bit more aggressive I told my mechanic about it as I was having some problems with the engine light at the time, never heard back about it car has never done it again though I just assumed it over boosted and just cut the throttle but it didnt go into limp mode it just drove normal after it happened

[Wenier]

From what you've said I would say it is boost cut due to a overboost which can happen if you load it up the right way.

[openboost]

xr6t4life.....its sounds the same as that mate..um its both foot to the floor and easing..when it happens I take foot off pedal and then goes back to normal..

[Mr_4.0]

So car is bog stock?

[openboost]

yeh its got k&n filter and turbo timer from previous owner and that's it

[Mr_4.0]

How do u know throttle is closing? Or are u guessing?