Ok so ive been having problems with the MBC and I know for sure its hooked up right and its working. I cannot get over 17 PSI so can this mean that i have a leak? I took the slowboy racing MBC off of my GST that im about to sell and tried it on the evo. The SBR MBC worked great on the GST and never gave me problems. I hooked it up to the evo and again I could not get over 17 PSI. It sucks when its not even as fast as a stock evo lol

 

You may have a light spring in your MBC and you need to get a stiffer one.

 

yep, change the spring.

 

i could try that i suppose but the guy i bought it from said he was running 22 PSI until he turned it down. I dont think he was b/sing but maybe idk

 

Did you replace the rubber tubing going from the wastegate and the nipple on the outlet of the turbo?

There is a pill in there, I'm not sure if it would give the results that you're getting but I do know that you CANNOT have it in there with an MBC installed.

 

Good God, Turbo-Evo, this is like your 3rd or 4th thread on the same crap, but instead of fixing the junk, you keep making new posts and saying, "does this mean I have a leak?"

Christ, man, it does NOT MATTER WHAT THE PREVIOUS OWNER SAID. He got rid of his hunk of junk and is grinning from ear to ear. It is now your problem to fix, but you have made it our problem by continually posting the same thing over and over. How in the world did an FMIC for your 2G fit on the Evo? That doesn't make sense either.

Anyway, I gave you troubleshooting tips last time, and you have not reported back to me to let me know what you found. You only say, "I know for sure its hooked up right and its working." How do you know when you just bought the car and didn't have a clue how the boost system worked last time we talked? How do you know it's working if you can't boost over 17psi? You don't know either of these things, so please don't claim that you know they're ok.

You HAVE TO GIVE US DETAILS:
- What MBC is it?
- How EXACTLY is it hooked up? (every line, every hose, every location, everything)
- What BOV do you have? (how is it hooked up? stock intake? stock UICP?)
- Take pics so we can see these details
- What boost gauge do you have? Are you sure it's accurate?
- How low can the boost go when you turn the MBC all the way down? (11psi min or lower?)
- Is there a point at which it hit 17psi when turning the knob, or is this only at max? Does it hit 17psi half-way, but then doesn't go any higher if you turn it to max?
- What hoses are being used? Have you taken the whole thing out to inspect every hose to ensure they aren't the stockers with restrictor pills?
- Have you removed everything to double-check all the connections, hoses, and nipples? Is the wastegate actuator nipple bent? Is the turbo nipple bent? Are you even using the turbo nipple? Is the BCS capped off? Is the hose to the MAF pipe in place? If not, is the MAF pipe nipple capped?

 

It the hallman MBC and its hooked up exactly how it shows in one the forums on this site. It is the stock BOV, autometer boost gauge. When i turn it all the way down it is at 11 PSI. There is a point where it turns to 17 PSI then it can be turned more but does not go any higher.

 

Then take it all apart and take pics to show us every single bit. You still didn't answer a lot of my questions. I'm guessing you still haven't done a pressure test either.

Just because you say it's hooked up exactly how it shows on the forums on this site, that doesn't tell us anything. There is more than one way to do it, and both ways are documented in detail on this site. You have to be way way way way WAY more specific if we are going to help you.

 

hostility in here

 

well the way it is hooked up is there is a T fitting that has a hose running from the BOV and intake manifold into it. Then it runs from that into the MBC. Then the hose coming out of it down to the wastegaste. I'll take pics tommorow and try to post them and no i haven't dont a pressure test.

 

Ok, not the method I prefer, but both methods work. Now, you need to remove all those boost hoses to ensure that none of them were part of the stock boost system by making sure they have no restrictor pills in the ends.

 

Clayton have you tried both methods? I'm running it from the BOV to the Wastegate and I have to say it's superior =)

 

Yes, I have. I don't like it interfering with the pressure going to my BOV. I also prefer to have direct control over the boost at the source instead of controlling it after the pressure has passed all through the system. If there are any leaks, you are regulating the post-leak pressure. For reference, Buschur doesn't even add a nipple to their LICP turbo outlet, because they prefer the BOV method. As the saying goes, if it's good enough Buschur, it's good enough for me...just not my preference.