i bought a profec B a little while ago. (i have a 9lb spring in my tial wastegate) when i first got it, on the low boost setting i only had to turn the **** like a little before half and it went to 10psi. now i have to turn it to almost 3quarters to get 10psi. i checked the hoses and their all hooked up with no leaks. did a boost test, and i'm not leaking boost from anywhere. whats the deal?? can anyone help me?

 

where is your balance **** set to?

 

the middle, but no matter which way i turn it, it still does the same thing

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SpoolnG2 &raquo;</TD></TR><TR><TD CLASS="quote">the low boost setting i only had to turn the **** like a little before half and it went to 10psi. now i have to turn it to almost 3quarters to get 10psi. ?</TD></TR></TABLE>

Im having the same problem with high boost, i cant seem to pass up 17 psi.

 

i called greddy, and they told me it changes b/c of the atmostpheric pressure. i can't change that much for no reason.

 

so atmospheric pressure changes the boost pressure in the manifold? huh, can u explain a little more?

 

That is an odd answer...i don't think the pressure in the intake manifold is relative to the pressure outside.....so according to Greddy, my boost guage should go up just my driving up in the mountains...um...don't think so!

I think its gotta do with either the vac lines somewhere or the black box. My boost ALWAYS spiked until I got my car back from the rebuild. They did redo my vac lines and added more ties to vac nipples and now its right on all the time. I saw recheck EVERYTHING again...and try turning the balance know up all the way

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboDANDEE &raquo;</TD></TR><TR><TD CLASS="quote">so atmospheric pressure changes the boost pressure in the manifold? huh, can u explain a little more?</TD></TR></TABLE>

 

ya, i thought it was kind of an odd answer too.. didnt make sense to me.

 

i think there are dip switches in back of the profec i for got the setting bu ti know if you change the switches there is a plus or minus some value sorry for not to clear but just a little direction.

 

ya there's 4 switches on the back and i dont know what the **** they do. i just put it on the way the greddy manual told me to set it for, External Wastegate.

 

i think there are 2 external waste gate settings.

 

hhhmmmm, i'm gonna have to look into that


http://greddy.com/Technical/profec_frame.htm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboDANDEE &raquo;</TD></TR><TR><TD CLASS="quote">

Im having the same problem with high boost, i cant seem to pass up 17 psi. </TD></TR></TABLE>

Do you have a 6psi spring in there or something? If you want to boost higher than 17psi, try starting off with a higher spring like a 9psi one.

 

12 lb. spring

 

OK im retarded

i had mine set on the actuator type (when overboost occurs) all along I wonder how much of a difference this will make?