Turbosmart Boost Controller Problem!!Help!!

[98turbo]

I just installed a Turbosmart dual stage boost controller. My problem is my low setting won't go lower than 15psi. I don't think that is right. Correct me if I'm wrong, but if the low setting is as low as it will go, wouldn't your boost be what you had before the install???

 

[JCMDSM]

The pressure won't go any lower because the spring you have is most likely rated at 15 psi. That is the lowest amount of boost needed to operate the wastegate.You need to find a lower spring to run less boost. Good Luck -Jon