i just got a boost gauge a defi bf and i was wonder what psi i should be at in a 05 sti. should i be going over a bar because i do in 3rd and 4th wot. what is the max for the sti and where is it safe. if i'm at 1.2 or 1.3 in 3rd and 4th wot is that safe numbers for a sti. should i get a bc. thanks

 

can anyone help?

 

are you running stock??

 

no i have a 3 1/2 tbe and a aps cai and a reflash

 

That's about right then. 1 bar is around 14 lbs of boost and your reflash probably has your running about 18lbs peak boost so it seems you should be fine. How's it run and who did your reflash?

 

ok say i am in first and i get on it. it seems that it doestnt really go any where then a big burst of power then when i shift in second the power starts dieing off around 6000. then say i am cruising like 70 80 mph and im in six and i downshift to 5th the needle shoots over a bar and there seems to be hardly any power. do you think my boost is cutting out. should i get a bc.

 

First off, DO NOT GET A BOOST CONTROLLER. Secondly, a turbo loses some of it's boost as the RPMs start to peak (on our cars as stock anyway). Peak post generally comes around 3500 to 5500. You'll get more boost in your higher gears just because you're in the power band for longer, the intercooler is getting more airflow (colder air), etc... If you are really that worried about it take it to the dealership but I personally think you're fine.