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Me and my buddy just recently finished building a nice little turbo kit for his 05lx. We finished all the mock up but and everything was just finished being welded. So now the kit is ready to be put on. He has a vac block for easy hook up and to keep it clean. Here are my questions.

Where do I t in at for the main line going to the vac block? Brake booster? Once you give me a sugesstion please describe where it is (im not familiar with this motor)

On the wastegate ther are 2 nipples, 1 on the top and 1 on the bottom of the bowl. I think I connect the bottom nipple to the turbo (like you would do a internal gate) but the top Im pretty sure goes to a boost cont. He has no boost cont so would I just cap it off? If not what would be the best to do?

yes I searched and found nothing useful, just talking about the pros cons of internal/external

 
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If you follow the brake booster, you'll find the hose, look for a lump in the hose and avoid it. thats a check valve built into it. you want to Tee into it between the intake manifold and the check valve. For the wastegate, the top nipple is for boost control, if you plan on running the just spring rate, just plug it in to the vaccuum block. The bottom fitting is my favorite part of these wastegates, if you leave it open, the diaphragm will go wide open under any vacuum, because vacuum is only being applied to one side. This is good if you want the quickest reaction time of the valve without boost control. However, if youre like me, and run an open dump tube, the car will be loud because the wastegate will be wide open when the car is idling. If you have it closed off with the exhaust, this shouldnt be a problem. If you have it open dump, give the bottom fitting vaccuum. This puts equal pressures on both sides of the diaphragm and the valve will be shut until the spring is forced open by the exhaust pressure.

 
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Dude I thought we covered this.....

Good stuff Edwin, I didn't know that about the quick reaction bit on the bottom valve though. I'll be switching mine around tomorrow.

OK now. widegts, is your buddy running a catch can? If so, refer to my PMs about the routing the catch can.

Let me go snap a pic of the brake booster line that Edwin is talking about and some other vac line related pics.

 
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All righty. Here they come.

Here's where I removed the PCV system in favor of a catchcan setup. There used to be a vac line running from the PCV to the IM (left to right), but that's been changed to run to my catch can and the port there on the right provides vacuum to my vac mani. Two pics for clarity. This on the right side of the intake mani as you're standing in front of the car.






Now the rest of the lines. The pics should be self-explanatory. Let me know if you have any more questions as to the D17-specific bits. Rep me if this helped you at all.

 
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ok so let me recap to see if I have this right.

The top line over on the IM goes to the vac block

The bottom line off the IM and the line off the valve cover goes to the T fitting. The last line off the T fittting goes to the catch. The other line off the catch goes to the intake pipe.

I think thats the way it it set up. but correct me if im wrong

 
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Close. The bottom line is actually on the block. It's hard to see, but the PCV housing is on the block. The PCV valve needs to be removed and a 3/8" NPT nipple screws right in instead. No tapping or any fuss involved.

Now I had hose from the VC running into the catch can, but it's wrong! I changed it yesterday. Just run a filter on to the VC port and keep the hose off the PCV into the catch can ---> then to the turbo intake. Air needs to go into the VC there, and come out of the PCV housing. I had both sucking, which pressurized the system = not good. It's fixed now though.

 
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Dude, not to nitpick, or maybe I misunderstood, but this statement is wronger than two boys ****in'.

I ran the vac line off just the top fitting today, leaving the bottom one open as I wanted to just run 4 psi now off the spring, no other boost control.

With just the top fitting, the wastegate did not open. I was boosting 10 psi at partial throttle at 13.5 AFR. Not good (but pulling like a mother****er!!! Wee!!!). I plumb just the bottom fitting in, leaving the top open to the atmo, and boost stayed at 4 psi, solid through the whole RPM band and AFR was at 11.5.

Edwin, I know you know your ****, and I'm not knocking you in anyway. Did I misunderstand this post?

 
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ahh look what i found =) pictures! lol..

ok. so how do i tap into the intake mani now?

jesus, this is the **** i missed.... i hope i didnt **** anything up already...

 
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ok question. when you mount the piping for the pcv hose, does it have to stick out into the intake on a 90 degree bend inside or straight into it. one way will cause vacuum, the other would cause pressure. im assuming pressure, and the air goes back out the VC through the breather (and put a small filter on it). now with the line coming from the turbo intake, you go into the PCV port on the block, right? (with the catchcan in the middle)

 
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Check your PM Nick.

 
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thanks clint