Thread: Air filter for turbo inlet

So right now my turbo has no filter at the in let and i was thinking of using my old CAI piping from my non turbo engine. Will this be ok? I just wana put something there to protect any dirt or anything that may get in there since this is my daily driver. I was just gonna run it to where the battery would be (it was moved to the trunk) and rest my filter right there....is there anything I should be sure to do in this process or could someone direct me somewhere I can find the parts I need for this? Also anyone have any pictures I could check out so I put it together right? I'm new to boost and just wana make sure adding a filter to it is just as straight forward as it is adding to the intake manifold on an non turbo

are you running blow through maf? or some sort of standalone? if so any piping with a filter on it should work fine. otherwise you will want to find a way to recirc your bov between the maf an turbo.

Yeah I believe i see a hose running from the blow off to the intake manifold. In the picture you can see I put a rubber coupler on the turbo inlet. I just realized after pulling my old intake piping out, its to big to fit so any idea where I might be able to find a pipe that curves kinda like how i drew it in the picture? I need it to run under that radiator hose and up over the intercooler piping/MAF so I can put the filter onto. Where the turbo is my filter is much to big to fit under that radiator hose in that area. Also whats a good material to get (and where) to make a fine screen to protect from anything maybe breaking off the filter and getting sucked it. I was thinking about using my old MAF for its screen temporarily until i made one. Its gonna be like it is now in the picture with just the rubber coupler until i can find some piping that fits...

Also I wanted to add (since this is my first experience with boost), my gauge is reading around 9-10 In Hg on the Vacuum side which in Idle after I start it up.....is that normal or should it be at or closer to 0?

my det idles at about -25
that pic tells me ur blow through maf so just put a really short piece of piping in that coupler on the turbo and put a cone filter on there

Oh ok so its nothing wrong........yeah I just gotta find some piping bent that way at the right size cause my old CAI piping is to thick

my setup uses a pipe made at a muffler shop for the intake...lol
you can kinda see it in this pic of the original setup...
the stock lower radiator hose was getting smashed by the intake tube so found the long flexable one to replace it.....and mine goes under the piping with the bov on it.
and my maf is drawthrough so i have a recirc hose
and the other line is the pcv

Yeah, I gotta find the pipe so I figure if I find one with the right curve I should be ok running it under this current radiator hose without smashing it much. I also gotta look into maybe one of those half size filter like you got cause right now I have one of those full size cones from Advanced Auto but again with the pipe I can just put it maybe where the battery was since it was moved to the trunk I got all that space. My BOV is like right on top of the intercooler behind the bumper and the hose runs from it all the way back to the intake manifold.......

I assume the BOV can be in a variety of places mostly anywhere before the intake manifold? Or does it have to be before the MAF?

My MAF is after the turbo in the intercooler piping, as you can see in my picture and i see in yours is right after the filter before the turbo? Instead of moving mine around, and before I can find something to make a screen out of, i was just gonna use my MAF from my old 200SX SE (with the GA16DE) for the screen it has to prevent anything that makes it through the filter (or parts of the filter itself) from being sucked into the turbo inlet. If I can find a pipe with a little hose connecter coming out the size I was gonna attach it to the valve cover breather spot which I have one of those small breather cone filters from advanced on there currently since there's really no where to run a hose to.....does all that sound like something who knew what they were doing would do? lol!

.....i just noticed in my picture if you look under my MAF you can see the old one from the GA16DE on the ground there...i was seeing if i could try and get it to fit in that blue rubber coupler on the turbo inlet, no dice, i'm def gonna need to run a pipe up to an open area lol

....oh and after running the car a little I actually noticed the vacuum level is actually almost about -20 not -10, so its actually closer to yours -25.....i dont have my boost gauge mounted up high enough to keep a close eye on it while i'm driving yet, but when I accelerate the needle levels up to 0 maybe a tad bit over and when I bought the car I was told it was set at 10 pounds, so my question is shouldn't when I get up into the RPMS and the turbo is kicking in and building up pressure shouldn't it go up to 10 psi, or how does that work?

On a different note, i also recently (well my brother and I) got one of the cleanest 300ZX Twin Turbos i think i've ever seen (that wasn't restored or at a show) and I noticed its stock boost gauge reads like aorund -10, -13 on the vacuum so i guess mines fine, i just wanted to be sure that was normal.....i love my SE-R but this 300ZX is like butter smooth...my dad also has a pretty mint condition '90 Corvette that i loved driving, but this thing is not only better on the handling and shifting, but would blow the doors off that thing

your setup being blowthrough you want the bov before the maf(hasn't been measured yet so can atmosphere)....you also only need the one little port for the pcv to enter the intake before the turbo....i need two because my bov is recirculated(it's been measured by the maf)

read these if you havent...
http://www.sr20-forum.com/information-library/34413-crank-case-ventilation-fully-explained-naturally-aspirated-edition.html
http://www.sr20-forum.com/information-library/44727-crank-case-ventilation-fully-explained-turbocharged-edition.html


a pipe run up to where the battery use to be is a great idea
might even be able to find one in the for sale section

a little off trck from your question but what ecu are you running to tune for blowthrough?

Thanks for the info and i'll check those links out thanks....I hope i can find the right pipe cause I dont wana have to try and mess around with having something made, or do something like use air duct piping or something that i've seen in pictures of other turboed cars, looks cheap lol....



Well I bought this a few weeks ago, I didn't help in the swap at all, but heres the info, maybe you can help me understand it better.....ECU is OBD I, Calum Realtime ECU, but he gave me the ODB II ecu as well....i have that little USB cable coming from behind the center console, i guess you hook that up to a computer and can tune the ECU, but i know NOTHING about that or how to use it. One thing i'd like to fix (and i was aware of this before buying it) but when starting up (cold starts only) the ECU is trying to figure out the fuel regulation and the idle just about dies (stalled the car once, but I sit there and rev it back up when it gets to the point of almost stalling again) about 4 or 5 times until it levels out and is fine....i'm not sure if there might be a way to tune it to deliver more fuel so those initial fluctuations don't happen on a cold start...kinda sucks having to sit there for like a minute on a cold start, not a big deal tho. I really need a knowledgeable person to help teach me (cause i want to learn most of all) and i want to save myself money by doing it myself, cause I love working on my cars but again, this is my daily driver so i cant afford the down time