boost spike at 17psi and droping to 10 psi

[erald01]

Well i was getting a boost spike at 17psi and droping to 10 psi, so i turned off the greddy BC, to see whats up, but i noticed that it only boosted to 10 psi with the BC off. Isn't the evo3 supposed to boost 14 psi without the BC? I have no leaks either. Any idea guys whats going on?

 

[cruisintalonawd]

try hooking up to the stock BC if you still have it and see what happens
and what gauge are you using

 

[Black95TSIawd]

The stock wastegate has an 11psi spring in it.

 

[erald01]

It does? Oh well im just gona leave it for now cause its freaking cold as hell out in the garage. I'm gona have to look at the hook up of the BC all over again

 

[JayRolla]

Yes I they have 11psi springs but in my 1g it also only hit 9psi off the actuator. What kind of mbc do you have? How was it hooked up, through the actuator to jpipe or through the bov line?

 

[Black95TSIawd]

Yes I they have 11psi springs but in my 1g it also only hit 9psi off the actuator. What kind of mbc do you have? How was it hooked up, through the actuator to jpipe or through the bov line?

Are you talking about a 14b or 16g like he has?

 

[CanadianTSi]

Sounds like the Boost Controller settings need to be adjusted.

 

[Maglin]

Yes I they have 11psi springs but in my 1g it also only hit 9psi off the actuator.

Every boost gauge will be off some depending on elevation. I wouldn't be to concerned as the boost controler is hooked up properly. Read the directions and start @ 12 psi and get your gain and boost target's set up right and then start going up from their. It's been a few years since I've played with my Profec II. It took only about 10 pulls to get it figured out and set up right.

 

[erald01]

Its the Greddy Profec B-spec II, BC and it was hooked up through the j-pipe. I personally didn't hook it up, it was my buddy that did it at his shop while we changed the suspension. To be honest i'm still trying to figure the damn thing out.