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2G Dejon Intake Install for New Owner: Tips?

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Allamricn

15+ Year Contributor
53
0
Jan 30, 2008
Aurora, Illinois
I've decided to get the Dejon intake to replace the stock intake w/ MAS. I have read a lot about getting the right one, where the three hoses go, etc. But what I didn't really see is whether or not someone who's not TOTALLY car-inclined can perform this install. It seems fairly straightforward but I wanted to make sure there aren't any tips, things to watch out for, etc from those of you with more experience at installation.

I really want to learn to do alot of the mods myself, or at least the ones I feel comfortable with and I really appreciate the wealth of knowledge, but I'm just looking for some pre-guidance with the Dejon install (ESPECIALLY the connection from tube to Turbo)

Thanks!
 
I've decided to get the Dejon intake to replace the stock intake w/ MAS. I have read a lot about getting the right one, where the three hoses go, etc. But what I didn't really see is whether or not someone who's not TOTALLY car-inclined can perform this install. It seems fairly straightforward but I wanted to make sure there aren't any tips, things to watch out for, etc from those of you with more experience at installation.

I really want to learn to do alot of the mods myself, or at least the ones I feel comfortable with and I really appreciate the wealth of knowledge, but I'm just looking for some pre-guidance with the Dejon install (ESPECIALLY the connection from tube to Turbo)

Thanks!

I honestly don't think Dejon should sell those intake pipes to folks with 2.125" compressor inlets. They'll give you a small section of hose that gets sandwiched between the compressor inlet and the 3" coupler that connects to the outlet of the intake pipe, but it's a completely lame hack IMO. The stupid thing will get cockeyed and block more flow than the stock intake pipe. And you can't see that it's cockeyed until the next time you take it off. And by then, it's sort of taken a screwed up shape that you can't fix easily.

Just make sure you get the small section of hose properly aligned before you clamp down on the compressor inlet.

If you do routine boost leak tests, you get to fight that stupid coupler every single time you button the intake back together. Might not be a bad idea to RTV the small coupler inside of the 3" coupler just so it will stay put.

It's a very nice intake pipe, but it is *not* the right size for a 2.125" OD compressor inlet.
 
I honestly don't think Dejon should sell those intake pipes to folks with 2.125" compressor inlets. They'll give you a small section of hose that gets sandwiched between the compressor inlet and the 3" coupler that connects to the outlet of the intake pipe, but it's a completely lame hack IMO. The stupid thing will get cockeyed and block more flow than the stock intake pipe. And you can't see that it's cockeyed until the next time you take it off. And by then, it's sort of taken a screwed up shape that you can't fix easily.

Just make sure you get the small section of hose properly aligned before you clamp down on the compressor inlet.

If you do routine boost leak tests, you get to fight that stupid coupler every single time you button the intake back together. Might not be a bad idea to RTV the small coupler inside of the 3" coupler just so it will stay put.

It's a very nice intake pipe, but it is *not* the right size for a 2.125" OD compressor inlet.

I purchased the 2.75 model for the 14b as opposed to the 3" model. I can honestly say that I don't understand (yet) what you are referring to other than understanding that I must align it properly before finalizing the couplings.

As for any other tips, I was wondering whether its best to attach the turbo end first or have the MAS assembly end completed first. I don't have the manuf. instructions yet as I just ordered it, which I assume will have step by steps, but for those of you that have followed some instructions, sometimes what's written isn't always the best and easiest way.

Thanks again guys, I am so excited to finally start working soon on my very own DSM 2g.
 
I have a K&N filter, but this is what I do.

Remove the coolant overflow bottle (pull staight up on it) and lay it over on the shock tower or somewhere out of the way.
Connect the coupler to the end of the intake pipe and tighten it.
Connect the MAS to the intake pipe (MAS unplugged).
Connect the vaccuum lines to the intake pipe.
Install the intake pipe onto the compressor inlet.
Make sure the intake pipe is rotated correctly on the turbo so that it will mate up to the air filter. Then tighten down the clamp on the turbo end.
Mate the MAS to the K&N air filter.
Get the end of the K&N onto the bracket (get the stud through the hole in the bracket).
Adjust the filter and MAS to get the coupler in the right spot. There is a lip that the K&N rubber coupler shouldn't overlap, so you have to mess with it a bit to get things right.
Tighten the filter/MAS clamp.
Put the washers and nut on the K&N bracket/stud and torque it down.
Put the recirc tube on the intake pipe and tighten the clamp.
Plug the MAS back in.
 
Well, I plan on hopefully installing the HKS BOV at the same time, already have my C-ring pliers ready to go, and so I hope that it goes well enough for a short 1hr+ install (if that long)

Thanks for the help.
 
Well, I plan on hopefully installing the HKS BOV at the same time, already have my C-ring pliers ready to go, and so I hope that it goes well enough for a short 1hr+ install (if that long)

Thanks for the help.

What do you need c-ring pliers for? I don't know much about the HKS BOV, so maybe there's something on there you need them for.
 
What do you need c-ring pliers for? I don't know much about the HKS BOV, so maybe there's something on there you need them for.

There is a c-ring that clamps the BOV to the flange.

I'm running into issues with the recirculation nozzle being smaller than the stock BOV intake hose being a bigger inside diameter than the nozzle.
 
What do you need c-ring pliers for? I don't know much about the HKS BOV, so maybe there's something on there you need them for.

If you have never tried, you owe it to yourself to buy an ebay knockoff ssq JUST so you can try and get that stupid thing into the flange. Biggest PITA ever. As awesome as the bov is, its just too much of a pain, even with the snapring pliers.
 
If you have never tried, you owe it to yourself to buy an ebay knockoff ssq JUST so you can try and get that stupid thing into the flange. Biggest PITA ever. As awesome as the bov is, its just too much of a pain, even with the snapring pliers.

ROFL I just want to find the right hose to fit on the valve nozzle to the intake! I have enough problems without a knockoff ROFL
 
Kenamond was absolutely correct.

The coupler for the 14b narrowly and I mean it took me an hour just to get it on properly. In my opinion, I think Dejon should offer a 3" to 2" ID silicone coupler to make this work correctly.

Haven't driven it yet, but started it and it sounded fine, checked all my rings for tightness, etc.

I just don't get it why they would make it so difficult to get the coupler on.
 
I had one. I didn't like how it mated up to my FP BigT28. I sold it and bought an Injen intake used that works perfectly. I didn't use that stock c clip and I used needle nose pilers to take it off and discarded it. I replaced it with a stainless steel clamp. I can't stand those crappy c lamps.
 
Kenamond was absolutely correct.

I just don't get it why they would make it so difficult to get the coupler on.

I had the same issues, not so much with getting it on the inlet, but with it staying on. After a few months, the little inside ring started to get gooey and misshapen, and would not stay tight and/or properly aligned for long. I got a silicone reducer from these guys and all is good now :thumb:
 
Gradually working itself off. The Dejon doesn't have any kind of system for mechanically physically holding the intake on other than the screw/band clamps. No lip at the end. I didn't like that. I've never had to mess with my Injen intake.
 
I had the same issues, not so much with getting it on the inlet, but with it staying on. After a few months, the little inside ring started to get gooey and misshapen, and would not stay tight and/or properly aligned for long. I got a silicone reducer from these guys and all is good now :thumb:

I ordered a 3 ID to 2 ID silicone reducer from Extreme PSI today and will likely try it this week when it comes on.
 
OK, so I just bought the intake itself, k&n filter with adapter for the maf off a dsm guy. I tried to install it and it sags on the the filter side. Is there a bracket I need or something like that? Also, the intake seemed a little short, as in the maf is closer to the center of the car than it was with the oem intake.

I figured I'd bump this thread, instead of making a new one.
 
If you have never tried, you owe it to yourself to buy an ebay knockoff ssq JUST so you can try and get that stupid thing into the flange. Biggest PITA ever. As awesome as the bov is, its just too much of a pain, even with the snapring pliers.

Just put my HKS SSQV on my car. That snap ring was a PITA. I got the black one and scratched it all up just trying to get that ring it no matter how much I tried to pad the BOV. I couldn't find a pair of c-ring plier big enough, so I eventually just bought a cheap pair of needle nose pliers and took the bench grinder to them to make the tips smaller. That at least made it so I could compress it enough to get it into the flange. From there, my snap ring pliers were big enough.

OK, so I just bought the intake itself, k&n filter with adapter for the maf off a dsm guy. I tried to install it and it sags on the the filter side. Is there a bracket I need or something like that? Also, the intake seemed a little short, as in the maf is closer to the center of the car than it was with the oem intake.

I figured I'd bump this thread, instead of making a new one.

I have the eBay knock off. It does move the MAS closer to the center of the car. You can run a slightly larger filter that way. Plus, less material.
 
Hers's some pics.

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So how do people keep them from sagging down and leaning on the oem air box area?
 
My just sits there. The one edge of the air filter does lean on the edge. I'm looking at making a box that seals to the hood to make it suck in cold air instead of some hot underhood air. It will hold the it up a little bit.

EDIT: Here's some pictures I just took. Just for you.

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Looks a like yours and I only paid $48.
 

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Ok, thank you soooo much. It makes since now.



So it can move around under acceleration and such? Has it ever come un-done?

Also, what did you use for the recirculate pipe?
 
Make sure you use the donut that is inside the stock intake cause you usually need that for it to stay clamped on.
 
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