I dont know what is wrong and I am completely stumped for once.

I have the Profec B Spec II connected version 2. It has always worked perfect until yesterday after I reinstalled my gauge cluster (how would this affect?)

Normally 30-32% Set Makes only 10-10.8PSI of Boost.

I got out yesterday WOT and its doing 13.8-14PSI!!!!! at 30%
My high boost setting 42% made 17PSI (supposed to make 13.5)

So turning the % down to 20% now makes 10.8+ and 30 makes 13.8 this is unreal? what is going on?

and the SCARIEST THING, with the boost controller OFF it should make 7.5PSI Right? NO! it produces 8.5 on the primary and actually jumps the transition into 9.4 to redline!!!!

I have a ported wastegate, stock twins. Ive double checked the vaccuum hoses to the WG Actuator and the Pre-Spool Actuator. What else is there to check? The hose to the boost controller in the cabin is only pressure monitoring and shouldnt affect it when off. Everything is hooked up perfect.

Could be profec be going bad and not allowing air to pass through correctly

OR...

Is my WG getting stuck like halfway or something odd. What do I do? How do I troubleshoot this?

 

i must add there is no spiking at all its just the boost rises too high

 

WD40 all of the mechanical parts you just listed that you've checked. Try configuring the profec to a lower boost setting. tell us what the situation looks like then.

 

ok, looks like a good result. I sprayed pb blaster into each nipple on the wastegate actuator. then i applied pressure to each side of the actuator using some sort of hand held pump with vac line attached that my friend owned. We then used a mitivac to pulled vaccuum (dont know if this would do anything). Reattached hoses and installed new rubber vaccuum cap (incase old one was cracked but I couldn't see it very possible). Its now boosting much better but the car still has enough to transition. its like 7.8psi

 

also if ur going to be boosting 10-14 i would recomend using the low setting.. i use my low as my high and off to run the wastegate spring 7psi.. i tried using my high for my 10 and up but i was having transition problems and just couldnt get the right boost on my greddy type s.. then i experimented with the low and it worked perfectly

 

/\ Just FYI, I'm boosting 14.1 on my high setting at 28% and 11.5 on my low at 15%. That's one thing about the profec-b spec2 that I've seen is that no matter what your setup is, even if its the exact same as someone elses, your percentages and peak boost for those percentages are going to be pretty different.

Monsterbox - all that is new to me and sounds pretty bizzare but the only thing that has ever thrown my percentages off like that is a big drop in the outside temp. Caused me to creep up to 16.3 one time when the temps outside went from 88 degrees to about 53 degrees one night. At WOT it crept pretty bad.

 

thanks for the info guys, im pretty sure i figured it out...looking closly at the vaccuum cap for the wastegate actuator ...very closly...theres a hairline split..i gues whats happening is the higher the boost goes, the cap opens at the split and allows are to escape which causes the wastegate to start closing slowly rather than opening!

FD3S: I dont see what you mean about the Low, Hi....I have a SPEC II, this has a digital Low/High...I can set my High at 20% and my Low at 50% they will be opposites

 

i should now sue advance auto parts for having a rubber vaccuum cap split....that could have been my seals

 

They'll just say their vaccuum caps aren't rated for that kind of psi.