i have a profec b spec 2, have had it when i had a t25 worked well, now with the 14b i cant stablize boost. it will go to over 18psi everytime, and i want to keep boost at about 14 on low and 18 on high. any help would be awesome.

thanks guys

pOlAkGSX said:

i have a profec b spec 2, have had it when i had a t25 worked well, now with the 14b i cant stablize boost. it will go to over 18psi everytime, and i want to keep boost at about 14 on low and 18 on high. any help would be awesome.

thanks guys

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Does it go straight to 18 psi, or does it go to 14 psi then creep up to 18+? If it does that you have boost creep and need to port out the wastegate flapper hole or even get a 34mm flapper. Try running a vacuum line straight from the wastegate actuator to a boost source to see if you have a bad actuator.

no im trying to get the boost stabalized, it just builds and goes up to about 21 psi i cant get the boost to stop ant any point

pOlAkGSX said:

no im trying to get the boost stabalized, it just builds and goes up to about 21 psi i cant get the boost to stop ant any point

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Sounds like boost creep to me, caused by your 3" exhaust. Try running a vacuum line straight from the actuator to your boost source just to make sure it isn't a bad actuator.

hey do you happen to remember what settings you had when you were running the t-25 turbo. im having trouble tunning mine . it wont stabilize under WOT.