ok....i was tinkering with my car today cleaned the throttle body and iacv, then tonight i go to drive it around. i get on it and it stutters at about 6-6500rpms so i get on it again and look at my boost guage and it hits 10 then 11 so i get off of it....i usually run 6-7 pounds, external wastegate with a 6or7 pound spring. my blow off valve is working and the vaccum line running to the wastegate is connected just wondering what you guys thought.....also i am throwing code 1 and 14 but only once in a while after i get on it, but just sometimes thanks in advance

 

Only thing I can think of is a stuck wastegate.

 

I think code 1 is o2 sensor?.........

 

Try checking the wastegate and then replace the vacuum line on it. Even if the line looks good, it could have a small crack or something causing pressure to leak out which raises your boost.

1 - Oxygen Sensor
14 - IAC (EACV) - idle air control valve

 

dumb me....when i clean out my iacv i must of pulled off one of my vacuums to the back of my intake ahha