SamGrant951

MBC, Tial 35.
Banjo line---->Side Port w/ a Tee to MBC opposite of arrow.
Control Line on MBC (arrow)---->Top Port

Boosting to 10 no matter what i dial in. Clamped off signal going to side port before the tee (closer to wg). can hit whatever pressure I want..

So is this a wastegate issue or a problem elsewhere in the system?

CBV checks out fine, intercooler pipes and clamps all good. idle is good, vac is good.
ps=and before this I was running 15psi with a Electronic BC no problem...

Danno

It's reversed. If you're following the printed Lindsey instructions, it won't work on a Tial. Here's what the lines should look like.

1. Banjo-Bolt hose --> vacuum T inlet
2. one side of T goes straight to side port on wastegate
3. other side of T goes to boost-controller, then outlet of controller (following arrow) goes to top-port on wastegate.

SamGrant951

ok thanks will do that when I get home, still doesnt explain why I lost boost with my electronic controller though....thats why I think something else is amiss, I couldnt dial in anything over 10 with the electronic, and the day before It would hit whatever I dialed in, so then I swapped in the manual and same thing..10 is the most I could ask for-until I clamped the line.

Dan87951

Sam you have a PM.

TurboTim

Dannos right, you have the MBC connected backwards.I would also check the vacuum hoses for tears or cuts if swiching the lines on the MBC doesnt help.

Danno

"still doesnt explain why I lost boost with my electronic controller though....thats why I think something else is amiss, I couldnt dial in anything over 10 with the electronic, and the day before It would hit whatever I dialed in, so then I swapped in the manual and same thing..10 is the most I could ask for-until I clamped the line."

Well, at least we know the wastegate is working correctly by the clamp test. It's higher-pressure on the side-port that will open the wastegate.

What kind of electronic boost-controller are you using? If it's a Profec and you have it hooked up in place of the MBC in dual-port mode. Then the boost-solenoid goes to the top-port, you have to specify "external wastegate" in the settings.

If you have it hooked up in single-port mode, the solenoid should go to the side-port and boost-controler should be set to "internal wastegate". The top-port should be open to atm. pressure.

Magown

Sam, call me when you get home. What you told me on the phone doesn't match what you wrote here.

SamGrant951

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Danno:
<strong>It's reversed. If you're following the printed Lindsey instructions, it won't work on a Tial. Here's what the lines should look like.

1. Banjo-Bolt hose --&gt; vacuum T inlet
2. one side of T goes straight to side port on wastegate
3. other side of T goes to boost-controller, then outlet of controller (following arrow) goes to top-port on wastegate.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">thats how mine is hooked up. banjo--&gt;&gt;T--&gt;&gt;side wg, other line off T to manual controller
Control line (arrow) -&gt;Top Port WG

thats what I wrote in the first post, just worded differently..