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Aftermarket Intake System?

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tsi1991awd

10+ Year Contributor
1,366
6
Sep 28, 2008
Puyallup, Washington
I have a 1991 Talon TSI AWD that I just bought...I was wondering if there is an aftermarket intake system that can be put on. I know it has the MAS so I'm not sure if there is an adapter for it or anything. The stock intake tubing is just getting kind of old and I don't know if it will eventually leak or air or something. But would an aftermarket intake system add any HP gain? Because I am not looking to add a lot of power or mod this engine a lot...I just need it for my DD and a bit of fun once in a while.
 
Thanks...which would be the best one to get? I'm not sure what all the tubes are for....but I'd assume I have to have all of them since I'm keeping all of the original equipment.
 
Thanks...which would be the best one to get? I'm not sure what all the tubes are for....but I'd assume I have to have all of them since I'm keeping all of the original equipment.

There are a few options here.

First of all, you want to get an intake pipe that has all of the nipples/pipes for everything goes there. You'll need to have a bov recirculation tube. You'll need 3 nipples on the back side of the intake pipe - a larger one for the charcoal canister, a smaller one for the valve cover breather, and another smaller one for the stock BCS. If you'd like, you can not get the nipple for the BCS and install an MBC. Or just whenever you get an MBC, you'll just put a vacuum cap over that nipple since it won't be used.

Now for the options. You can get one that has a 2 3/4" outlet for the turbo. This size (according to Dejon's website) "barely clears the 14b-16g waste gate actuator but will also work with the 20g." So if you decide to upgrade the stock 14b turbo to a 16g variety, the intake pipe will still work.

You can also get a larger size (3" or 4") and then get a silicone reducer coupler so you can use the larger pipe with the smaller turbo. Since you're not looking to upgrade much, I would say to not look into this though. I am currently running a Dejon 4" intake with a small 16g turbo using a 4" to 2.5" reducer coupler from FP.

Wow. Search much? No? Try it.

Please don't post useless stuff unless you have something to add to the thread. You could have even posted a link to another thread that would've helped out the OP.

dejons are junk. Id buy a cheap ebay intake before I'd buy a dejon.

Do you have any proof? I've been running a 4" Dejon intake without any problems for at least a year.
 
dejons are junk. Id buy a cheap ebay intake before I'd buy a dejon.
Looking through your flurry of posting in the last day or two with some decent content interspersed with garbage, I'm almost willing to bet you need to sell something.

If you are just trying to get your post count up, we can fix that from our end. ;)

If you are serious about an intake pipe used by a large number of the DSM crowd being "junk", put up some proof.
 
Dejon makes good quality products, and if I had the money to throw down I'd get one because they look tight too. But for money to performance I would get the injen style, minus the filter.
 
There are a few options here.

First of all, you want to get an intake pipe that has all of the nipples/pipes for everything goes there. You'll need to have a bov recirculation tube. You'll need 3 nipples on the back side of the intake pipe - a larger one for the charcoal canister, a smaller one for the valve cover breather, and another smaller one for the stock BCS. If you'd like, you can not get the nipple for the BCS and install an MBC. Or just whenever you get an MBC, you'll just put a vacuum cap over that nipple since it won't be used.

Now for the options. You can get one that has a 2 3/4" outlet for the turbo. This size (according to Dejon's website) "barely clears the 14b-16g waste gate actuator but will also work with the 20g." So if you decide to upgrade the stock 14b turbo to a 16g variety, the intake pipe will still work.

You can also get a larger size (3" or 4") and then get a silicone reducer coupler so you can use the larger pipe with the smaller turbo. Since you're not looking to upgrade much, I would say to not look into this though. I am currently running a Dejon 4" intake with a small 16g turbo using a 4" to 2.5" reducer coupler from FP.

Would it make any difference power wise if I went with a bigger diameter pipe? The 2 3/4 sounds alright with me, but if there's much of a difference I might like to go that route. Whatever is the best bang for the buck.

I'm not looking to upgrade the turbo at the moment...I will get there someday, but I've had my fair share of hotrodding within the past 3 years. I'm still learning about different turbo setups and whatnot...so I don't want to rush into anything or start doing upgrades to have my engine blow.

This is a 100% stock engine...still has the original exhaust and muffler, etc. What I wanted to do was buy a Greddy blow off valve but I couldn't find much info on how to set one up...I've seen the HKS to 1g BOV adapters but I haven't seen the any Greddy ones. And I don't know if its possible since the 1g uses a recirculating BOV.

As I said, I'm still learning about this car...maybe that is a downfall of mine. I buy a car before I know a lot about them. But I like to learn along the way and fix things myself...gives me a good feeling. Anywho, sorry for the long post and all the questions. You helped me quite a bit with your post. Thanks, and thanks to everyone that chimed in.
 
The bigger intake pipes are for larger turbos, and you will probably run into unnecessary fitment problems, being that you want to keep everything mostly stock. The 2 3/4" pipe will be fine for you.
 
With the small turbo you're running, getting a larger pipe would make no difference. Since you don't plan to upgrade it anytime soon, I'd just get the smaller one and done.

Almost all bov's can be recirculated. To put a Greddy onto your stock pipes, I believe it's as easy as drilling 2 new mounting holes and putting it on. Then you can install the recirculation tube and you're ready to go.
 
Thanks for clarifying pipe size.

Also, where does the recirculation tube go on the Greddy BOV? Would it just be simply taking the stock BOV off and mounting the Greddy up and just hooking it up just like the stock was?

And would there be a really noticable sound difference, or not much?
 
Depends on which bov you plan on getting. Usually you can tell where the recirculation tube goes. It's a big opening sticking out of the bov.

Here's how to install a Greddy bov onto a 1g flange:
Installing a Greddy Type S BOV in a DSM Eclipse/Talon/Laser

In the first picture you can see the big openings on the bov's. This is where the recirculation tube attaches to.

There might be a noticeable sound difference, although I've never heard the two side by side.
 
Thanks for that link...I may decide to do that sometime. SO there's 4 or 5 hoses that connect to the BOV then? And I have to T off some of the lines?
 
Oh...well that sounds easy enough...in the right up, it said something about running to the turbo and splicing vacuum lines and such. And it shows 4 or 5 lines hooked up to the BOV
 
I'm not exactly sure how the Type S works, but I bet you'll have a hard time trying to find one of those without spending a good amount of money. They've been discontinued and are a favorite of a lot of people.

But as I said earlier, most bov's will only utilize those two things running to them. Some will have a 3rd nipple, but it is usually left open.
 
OK, so if it has a third nipple, just leave it? Or cap it off?

Also, can you tell me what the adjustment screw is for?
 
If the bov has a 3rd nipple, just leave it open. But make sure you leave the right one open and connect the vacuum line to the correct one.

I'm not exactly sure that the adjustment screw is for as I never had a bov with an adjustment screw. But I believe it deals with the spring pressure inside and controls how the bov reacts when it "blows off." You can do a search and find out some info about this.
 
So is the Type S better than the Type RS? Because I can get either one...I know some people selling them. Used, but only for a couple hundred miles. So they should still be OK.

*I just realized it's only like 2 hoses connected...the big green one is running under the BOV and then around to the top of the other side. I was thinking it was 2 different hoses.
 
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