So I have the blow off valve, fuel pressure regulator and boost gauge all T'd into one port from the intake manifold. I'm wondering if this will work and if too many sources from one port will give me an inaccurate boost reading. And with the waste gate I have a fitting directly on the compressor housing of the turbo to a T, then the leg of the T goes to the bottom port of the boost controller, top port vented, and then the T continues to the bottom port of the wastegate, top port vented. So is this a good setup for all these lines? Thanks
-Turbo B18B1 Integra

 

You can still use the capped off nipple (where the PCV valve used to connect to). As for the boost gauge clear tubing, REPLACE it. That clear flimsy tubing will likely get soft and back off and you will have a vacuum leak.

 

@NVturbo
Oh alright I just didn't use the pcv port because I didn't have that size, it's significant bigger so I'll have to get bigger T's as well. As for the clear nylon line for the boost gauge that's what came in with the package haha thanks I will be replacing that

 

I'd run the bov right off the manifold and the boost gauge with the fpr like you're doing. It'll at least be cleaner and the bov will get a responsive reading. I doubt your current setup would have issues but there's no need to cap it and then have a maze of Ts. You could also use the cruise control port on the back of the manifold if you have one and if you don't have cruise control.

 

Fuel pressure is critical... I would run the small vacuum line directly to the FPR and then use the larger PCV port that you currently have capped to share between your BOV and your boost gauge. Get a 3/8" leg to 1/8" top "T" and connect it all up. I also agree that you should use better hose for the boost gauge.

 

^^ Agreed as well. FPR should have its own vac source.

 

Very much appreciated everyone, it's starting to make sense now and maybe I'll post a picture of how I finish the vacuum lines correctly. No fancy vacuum blocks or anything, just practical T fittings. No one said anything about the wastegate so I'm assuming that's fine

 

The wastegate is fine yes

 

Debateably fine. Lol! You *can* run it from the compressor housing but, it's *better* to run that from the IM.

 

I've just heard that from the compressor it runs at a higher boost, effectively making the wastegate actuate at a lower I'm boost pressure, which is *shrug* fine. I think it's cleaner too, and you don't need to cap the compressor nipple if you have one.

 

yes. you will need to cap the compressor nipple if you have one, and yes, it is much better to get your vacuum source from the Intake manifold over the compressor cover, regardless of what the interweb lore tells you. the compressor reading kinda gives a false reading and you can easily end up with wastegate control inconsistencies, especially if you have a really efficient turbocharger.

 

‘it’s works but you sacrifice some performance, I always use the intake manifold for my wastegate connections which is best

 

How would you sacrifice performance when you're usually going to use a bleeder valve or boost controller anyways? Do most people reference boost right off the wastegate spring?

 

Again. inconsistent controlability. Boost reference is off both the spring and the intake manifold when using a boost controller. please see the sticky in the FAQs as to how both a manual and some electronic controllers work.

 

‘since you get boost spikes on the hot side of the intercooler it will make the wastegate open prematurely which not only makes things spool up slower, it can cause fluctuations and inconsistent boost levels. Think like this ...... do you want your wastegate to open at 6 psi if you have a 8 psi spring? That’s what happens , and until the charge pipes equalize the boost will never reach the spring rate, then throw a boost controller in the mix and **** will be everywhere

 

This makes sense. Why do factor cars do it off the compressor housing then?

 

Smaller turbos and internal gates.

 

So for my tiny turbo it would make sense of should I do it off the intake?

 

yep. Low boost setups very rarely have hot side boost spikes. When running your lines to the manifold the boost always stays correct even if the hot side gets backed up 5psi because of a bad flowing intercooler

 

OP: For the love of all things turbo; take out that little circled piece and throw it as far as you can across your yard..

 

It was actually a mission to find a 1/8 to 3/8 T so I posted a part number, got it from Grainer. This is the new setup, new vacuum lines and this looks so much better. As for the wastegate, I'm gonna run it off the turbo as is, later down the line I may run it off the intake manifold, I just wanna finally drive it, still need a tune thought. Thanks

 

For future reference, autozone sells that exact T, as well as an assortment of others

 

Would you happen to have a part number? Cause I couldn't find it anywhere

 

I have the assortment package out in my shed somewhere. I'll find it in the morning and post a pic.

 

Oh your talking about the assortment pack, yeah I've seen it at AutoZone. I was just trying to to find the 1, should've just the the pack.. smh lol Thanks