i am pleased to announce i have solved the problem ,the boost gauge i was using was leaking slowly and inaccurate when setting wastegate,i bought a blood pressure cuff and modified it -160 mmhg = 3.0 psi i set the wastegate and got full boost back also my low end spool up is instant im thrilled and ...

alright thanks i just put a bit of pressure again on wastegate and got a little bleed down but not from the line so maybe something inside the wastegate? or the cbv?

hey one last question, im gonna check again for any vacuum or boost leaks in the whole system how would i do this ? in sections maybe hooking up pressure to wastegate and test then manifold and test for leak down and then what or can i just hook up to the wastegate and if no leak down then that mean...

thanks to all for the help ill look over the basics again and then wrap it up and live with it-ill close this thanks again.

alright thanks-the car was running so good before i messed with it- i wish i hadnt now believe me- its hard to believe its not an adjustment or something , if i did want to check the pressure -yellow hose off and boost gauge, would i connect the boost gauge directly to the wastegate or just take off...

its square-2.4 lpt, mines the 12.5 kpa

also jblackburn thanks for the input. i did teach it per the instructions and still the same result, thanks.

ok ill give that a try and let you know, yellow to wastegate, red to turbo and blue to intake hose is how the routing reads also when you say below pressure threshold do you mean just less than 1.8 psi as that is what is factory by ipds chart thank you so much

i tried the stock tcv problem still persists any other suggestions. thanks.

sure ill give it a try, i adjusted the wastegate before i replaced it. the only difference is the vacuum hoses are replaced now,also is the ipd unit not suffiecient just curious ill try to return it if not or is this just for diagnosing purposes because i was told it was bad from the volvo tech than...