Evolved Member
Ok I'm not sure how the aftermarket wga is on the evo, but on my previous car (srt-4) the wga arm had a turnable nut. Basically it gave the adjustibility of raising and lowering boost with the wga (no mbc needed) by making the arm shorter (more boost) or longer (less boost). I say check the wga arm preset if its adjustable.
Now to your exhaust leak. On my srt-4 I later upgraded to .50 turbo kit. The Tial wastegate spring was a 1 bar ~14.6 psi spring. The gasket blew from the exhaust manifold to wastegate connection, and therefore I had an exhaust leak. With the exhaust leak I could not boost past 13 psi unless I pretty much unhooked the mbc and completely isolated any boost from reaching the wastegate to push it open.
So I say check the wga arm tension (if it is adjustable), then get the exhaust leak fixed. Start with what you know, then look for the next.
Now to your exhaust leak. On my srt-4 I later upgraded to .50 turbo kit. The Tial wastegate spring was a 1 bar ~14.6 psi spring. The gasket blew from the exhaust manifold to wastegate connection, and therefore I had an exhaust leak. With the exhaust leak I could not boost past 13 psi unless I pretty much unhooked the mbc and completely isolated any boost from reaching the wastegate to push it open.
So I say check the wga arm tension (if it is adjustable), then get the exhaust leak fixed. Start with what you know, then look for the next.
Evolved Member
you if you give up that fast your never gonna be happy. i have worked with electronics for the past 6 years as a journeyman technician. and if your doing maint. and put everything together and it doesnt work...but it did before you did the maint....its your fault. so you should take it back apart and recheck everything and use some of the advice you got (even tho most of your replies are flames) and try to fix this issue. you will end up learning alot more and next time someone else has that issue you can help them out with the knowledge you recieved OR just get an STi
Evolved Member
Quote:
Now to your exhaust leak. On my srt-4 I later upgraded to .50 turbo kit. The Tial wastegate spring was a 1 bar ~14.6 psi spring. The gasket blew from the exhaust manifold to wastegate connection, and therefore I had an exhaust leak. With the exhaust leak I could not boost past 13 psi unless I pretty much unhooked the mbc and completely isolated any boost from reaching the wastegate to push it open.
So I say check the wga arm tension (if it is adjustable), then get the exhaust leak fixed. Start with what you know, then look for the next.
+1 Originally Posted by BluEVOIX
Ok I'm not sure how the aftermarket wga is on the evo, but on my previous car (srt-4) the wga arm had a turnable nut. Basically it gave the adjustibility of raising and lowering boost with the wga (no mbc needed) by making the arm shorter (more boost) or longer (less boost). I say check the wga arm preset if its adjustable. Now to your exhaust leak. On my srt-4 I later upgraded to .50 turbo kit. The Tial wastegate spring was a 1 bar ~14.6 psi spring. The gasket blew from the exhaust manifold to wastegate connection, and therefore I had an exhaust leak. With the exhaust leak I could not boost past 13 psi unless I pretty much unhooked the mbc and completely isolated any boost from reaching the wastegate to push it open.
So I say check the wga arm tension (if it is adjustable), then get the exhaust leak fixed. Start with what you know, then look for the next.
this is what i suggested before...but in more detail....i bet its this...
Account Disabled
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Wastegate to bottom of the Halman mbc. Line off the side of the mbc to the bov line. With the turbo nipple and intake capped.
3 pages of bullcrap....Originally Posted by subrwho
Heres how the mbc is hooked up. . (and my wastegate is after market, 17psi)Wastegate to bottom of the Halman mbc. Line off the side of the mbc to the bov line. With the turbo nipple and intake capped.
What the hell are you guys even talking about...
You just described the improper boost controller install. The lines are backwards.
Thread closed...
Or nevermind, I suspect these members would like to have a few more pages of fun with you.
If you do get the STi, don't work on it yourself.
Evolving Member
Quote:
Where do you live in utah? Anywhere near STG? if so ill fix it for you for 50 bux.Originally Posted by subrwho
Well last weekend I started the install on my new wastegate, manifold, o2 housing, and new boost controller. I replaced all of the vaccum lines and everything and still can't boost more than 12psi with the mbc all the way up. I'm sick of the evo, it's just problem after problem. So next weekend I will be trading my car in for an Sti. Anyone know what I can do to get my boost right before I trade it in? thanks
Evolved Member
Quote:
What the hell are you guys even talking about...
You just described the improper boost controller install. The lines are backwards.
Thread closed...
Or nevermind, I suspect these members would like to have a few more pages of fun with you.
If you do get the STi, don't work on it yourself.
well actually no those werent bullcrap suggestions... the wastegate installation is an actual problem that i myself have seen and it just so happened that the psi was stuck at 12 psi...as for the mix up with the lines for the MBC that was suggested earlier and he was still posting so we are guessing that he already fixed that.Originally Posted by TTP Engineering
3 pages of bullcrap....What the hell are you guys even talking about...
You just described the improper boost controller install. The lines are backwards.
Thread closed...
Or nevermind, I suspect these members would like to have a few more pages of fun with you.
If you do get the STi, don't work on it yourself.
Evolved Member
He's probably still going to sell the car and go to a subie forum just from sheer embarrassment.
Evolved Member
lol i bet it his wga is not adjusted wright or he broke it installing it.
Evolved Member
Quote:
For what itīs worth, your vacuum lines are hooked up backwards. 1) The boost reference source, which in your case is the DV/intake manifold line should be routed to the bottom port(the port opposite the MBC knob)on your Hallman MBC. 2) the side port on your MBC should be routed to the port on your wastegate actuator.Originally Posted by subrwho
Heres how the mbc is hooked up. .Wastegate to bottom of the Halman mbc. Line off the side of the mbc to the bov line. With the turbo nipple and intake capped.
I think that you need to shorten the WG actuator rod until preload is up to 18.5# since you have an 18# minimum aftermarket actuator. Once that is set, then your MBC should be back in the loop again.
A pre turbine exhaust leak will play havoc on your A/F ratio and knock counts.
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Wastegate installed wrong. Bro, I have probably done more installs then you'll ever do! And i'm not just giving up on the car because of this. All I have had is problems (And I don't beat the hell out of my car, I barely even drive it!) I baby my car!!!Originally Posted by bluebyu36
lol i bet it his wga is not adjusted wright or he broke it installing it.
The ONLY reason I said I give up is because of all of the problems i've had. And please don't say I treat my car like ****, or beat the hell out of it because I honestly don't. And i'm not trying to make everyone hate me by saying that I might trade in for an Sti, it's just that an Sti is more of a daily driver. Thank you all for your help, i'll have to try some things. Thanks again.
And by the way my mbc is installed right. Here's the link. I have mine mounted with the boost adjusting knob on the side, not the top. https://www.evolutionm.net/forums/sh...ht=mbc+install