Doesnt look ike nothing is connected wrong on that bay. Though with this new setup, only the side of the wastegate is the one you will use. The top is for ebc's only. So you just connect that side wastegate one to your turbo, the nipple on the compressor cover or j-pipe. You would connect your manual boost controller in between these two.

Though first check what bar/psi spring you have first. If its a big blue lets say, its a 15psi spring, meaning that by just hooking the wastegate to your turbo/j-pipe you already have a limit of 15psi. So careful becuase if im not mistaken you double the psi with a mbc, meaning you would control 30psi which can be dangerous to a stock block.

Depends on what boost controller you use but a hallman is a differential so if you have a 15psi spring and add 2psi you will be running 17psi

CoriGst120 said:

Depends on what boost controller you use but a hallman is a differential so if you have a 15psi spring and add 2psi you will be running 17psi

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Yea I wasnt too sure on this since I have my j pipe connected to the wastegate. Havent needed a mbc yet.

are you trying to just use the wastegate on your car?
if youre internally gated it wont work on your car unless you get external gated 02 housing with the external wga flange and delete the flapper together with the stock actuator.

The MBC I have is the turboxs one, it's the exact same one as the one in the link. Will this double the psi just by connecting it?



This is a picture of the whole bay:



So basically, I'm grabbing the turbo, manifold, wastegate, intercooler and piping. I will be using my stock J pipe, do you guys think there will be any issue installing it? I'm pretty much just unbolting the mani and swapping it over to mine and then trying to figure out how to connect everything properly.

Also, how do I check the spring in that wastegate? I'm sorry, I've never had to do that before haha.

By installing a MBC (manual boost controller) you can manually control boost by turning the knob CW or CCW, hence the name. The wastegate has a spring inside that opens the wastegate piston at a specific boost pressure but, with a MBC hooked up, you can control when the wastegate opens. But the spring pressure rating is the LOWEST amount of boost you can run, the MBC can only raise boost from what the spring pressure is set to in the wastegate. There are (6) allen head bolts holding the top of it on and compressing the spring. With that being said, if you start loosening up those allen bolts that spring isn't going to stay compressed and it will launch that top piece into your face or nuts. I recommend putting it in a vise or having a buddy hold it down TIGHT while you unscrew the bolts.

The top port of the wastegate is typically un-used but that wastegate still isn't setup properly. The vacuum line coming off the side of it is going to a boost source, unfortunately your dads friend has it going to a boost source that's a mile away (looks to be going to the intake manifold) when it should be as close to the turbo as possible.

There are no stupid questions.

Idk if you all missed in the pic but doesn't look like a dump tube on the wastegate and looks like it's real close tight fit to get a dump to down there next to thee downpipe/o2 housing. I think that manifold won't last long and will crack soon. The turbo should be feed from the ofh and try post a pic of the turbo see if it's a knock off or not.

I used to have a turboxs mbc like the one in your picture.. Normally by turning the mbc one revolution will equal 1 psi (not too exact, i dont want to input misinformation) Make sure its closed all the way to start with then start turning it out to raise boost level to be safe.
As for the wastegate spring, You can loosen the allen bolts holding the "crown" on top of the wastegate and the spring will emerge once you remove the cap. Remember its under tension, pop it off slowly. The color of the spring will dictate the psi rating per Tial's listing.

You mention that you will be using this manifold and turbo in the pic. You will just use a coupler usually 90 degrees, from the turbo compressor housing to the intercooler piping going to the right side tank of the intercooler. I dont see how you will use your j pipe in this setup, since it is a downward facing turbo. Just trying to help make it efficient and short route idea.
If this turbo has an npt vacuum nipple fitting then you will route a vacuum line from there to the brass nipple on the mbc. The side nipple from the Tial wategate will go to the blue nipple on the mbc.
Lets say there is a 15psi spring in the wastegate, then that is your maximum with no mbc. By hooking up the mbc and turning the adjuster out then you increase up one by one (psi) as you turn it.. Please be careful not to turn the mbc all the way out and overboost. watch your boost gauge and boost up and tune as you go. 2 turns will take you to 17 for example past the supposed 15psi spring.Supporting mods like fuel and management is another story.
http://turboxs.com/shop/attachment.php?id_attachment=7 this is the manual for the new gen standard boost controller. open the pdf file and you will see hookup to the turbo pressure nipple and adjustment. I hope its the same counterclockwise to increase boost. Looks like it cant go higher than 12 psi above wastegate spring psi. Not sure about your previous gen version
Late night rant, i hope it is coherent and helps you out.

I didnt hit the submit reply and walked away from laptop
Guys you beat me to it, my response repeats what you said, hope it helps

Just wanna start off with a thank you because this information is truly helping me quite a bit.

If you would like I can try to go back and snap a picture of the turbo for you guys to look at as soon as this snow is gone and you can see what exactly it is I'm dealing with.

Also I looked and the yellow tube coming from the wastegate is actually going IN to the cabin...

And on a final note, what supporting mods do you guys think I may potentially need to run this setup?

Again, thanks a ton. I'm really starting to love the support of people on this website

Lots of knowledgeable people on this site, glad to help if i know what im talking about
Im not sure why the wastegate line is going to the in cabin, hopefully they were not using it as a boost source for the boost gauge, that should becoming from the intake manifold at least. That line should be hooked up to a positive pressure source such as a nipple on a j piped turbo or if you can drill and tap an npt fitting such as the one you saw in the turbo xs manual i linked above.

If you plan to run higher boost safely. I would recommend a bigger fuel pump like a walbro 190, or 255. with a rewire. Theres an faq on that. Fuel management such as super afc II, dsmlink, etc.
You are already getting the fmic, turbo, manifold, etc. An intake and exhaust would be nice and maybe bigger injectors like 550cc. Your profile does not show anything if you can add, it would help.


A pic would help us see the turbo, ah been to colorado springs, denver , snow in the spring im happy with some sun in texas at the moment...sorry man whenever you can to get a better look

Ah gotcha! Mytalon already has an aftermarket exhaust and a turboxs bov but that's all I've got. Also... I know this is a stupid question but what exactly bolts on to the dump of that waste gate? Does it just go to atmosphere? Also the car has a boost gauge and a SAFC that I plan on using as well
And I must say I'm jealous of that sun being from California, Colorado just doesn't cut it weather wise!

I cannot tell by the pic but normally a tube would be coming from the wastegate to dump to atmosphere. or if you get an o2 housing that will route the tube dumping back into o2 housing. You can imagine its gonna be loud open dump

Looks like you have a head start on modifications. The safc will help tune and hopefully you have fuel covered

ehc14 said:

So basically, I'm grabbing the turbo, manifold, wastegate, intercooler and piping. I will be using my stock J pipe, do you guys think there will be any issue installing it? I'm pretty much just unbolting the mani and swapping it over to mine and then trying to figure out how to connect everything properly.

Also, how do I check the spring in that wastegate? I'm sorry, I've never had to do that before haha.

Click to expand...

I'm not sure what turbo that is but it looks like a downward firing one, where you will not need a 'J-pipe'. Looks like the bolt holes on the outlet side of the wastegate are empty, so he probably never had a dump tube hooked up to it. Usually there is a dump tube somewhat like this so the exhaust can at least exit closer to the ground and not heat up/burn up your engine bay:



That wastegate placement looks a bit awkward though. If you got real ambitious you could cut the pipe going to the wastegate shorter and re-weld the flange on at a better angle. If you want it to not be so loud you can get a pipe made like ^ that, but have it welded into your down pipe so the exhaust that comes out of the wastegate is directed back through the exhaust system/mufflers.


As gofer said there is a spring in the wastegate, and if you unbolt the top of it they are usually color coded so you will be able to tell what spring is in it. Like he said be careful, those things will knock your teeth out.

As far as the yellow hose running in the cabin, there isn't some sort of in-cabin boost controller is there?

Okay so you guys have cleared some things up and also made me have a few more questions!
If I just get a pipe coming off of the wastegate, will it be good enough? Will it pass emissions? Also... you said it's a "downward firing" turbo, what exactly does that mean? What is the difference between that one and mine? And if I don't have a J pipe, wheres the intake/filter/MAF? I'm sorry if these are really stupid questions...

Downward firing means the compressor housing on that turbo has the outlet pointing down where boost will feed into the intercooler piping.
If you notice on a 16g turbo for example without a j-pipe, the compressor housing outlet stops at the top of the turbo and the j pipe connects to it running downward firing to allow coupler attachment to intercooler piping.
I'am assuming the turbo is about 3" on the compressor where you see the turbine. Stock intake wont fit. You can find an intake pipe that routes to it with a coupler.. Your Maf and filter towards the passenger headlight will bolt up with an adaptor to the intake pipe.
No sure on emissions in your state but it is dumping open exhaust. You can route a pipe as you saw above from wastegate and see if you can get it welded to the downpipe or get a recirculate o2 housing with the pipe routing back to o2 housing that will bolt to that wastegate. Although the placement of the wastegate off the manifold is a bit awkward.
Hopefully this makes sense, i think once you get back to that parts car, you can visualize how you want to route all this.

Oh okay, that's starting to make a bit more sense.
So I know it's probably a bad habit, but would getting my car smogged with the stock turbo/manifold etc be a good deal and THEN put on the aftermarket parts, and just change it once a year? Only if I can't get the wastegate to connect to the downpipe/o2 housing?
And will I need to invest in an aftermarket intake pipe for this turbo? If so, where should I look?

Also, would it be wise to invest in some ARP head studs? Or will those not be necessary until I plan on running much higher boost?

Quite a bit of hassle to pass smog by swapping turbo setups every year, but if its hard to pass emissions in your state then i guess you have no choice.
Checkout punishment racing for o2 housing with dump reroute options that could fit that turbo. Make sure you match the turbine exhaust housing on the turbo.

As for an intake, dejon powerhouse, STM, and other great vendors that support dsmtuners should have intakes

For a 7-bolt, head studs are pretty much required to make anything above stock horsepower.

Gotcha, thanks guys! I will post back with pictures of the turbo when the snow clears as well as more pictures with different angles of the wastegate and that whole setup so you can check it out. Thanks tons for the help

OP did not read all the post but there are a few options... You can tap a nipple in the compressor cover, or intercooler piping for a boost source... Run a hose from that to the mbc, and the other side of the mbc to the side port of the waste gate

Emissions related: it "shouldn't" make a difference in having an open dump when they run tests, and you could probably pipe the wastegate good enough under the car that they'd never notice it was open.

And I say these based on the fact they only do a 1500rpm and 3000rpm check here and the wastegate wont open without hitting full boost. Unless they decide to do a dyno pull with your car all hooked up, then id find a new shop to test at

Is tapping nipples in a pretty simple process?
And that does make sense actually, my car starts really spooling around 2800 with the t25 but with this bigger turbo/etc I shouldn't have an issue. Glad you pointed that out! I still may look into getting the wastegate connected to the downpipe though just for good measure

Check out this link :

http://www.dsmtuners.com/forums/art...boost-source-16g-turbo-compressor-outlet.html
Similar process but on your turbo, the dril point will be positioned a little more downward.. i tried to find another how to but no dice.. The tap will correspond to the npt fitting nipple size you want.

Ahhh okay, perfect. It's starting to warm up a bit here so let me see if I can get down to get some pictures of that turbo for you to look at this weekend. Thanks so far for the advice :smilie: