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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > My Custom DCI, not sure it's done right. HELP!



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      09-07-2014, 04:14 AM   #1
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Red face My Custom DCI, not sure it's done right. HELP!

Sup Peoples,

I recently got the idea (and time) to install a dual cone intake kit in my 335i, like the type BMS sells for over $100 to non-Californians.
I went on Amazon and found 2 cone filters with a 2 1/2 inch inlet, I also bought couplers. The couplers were the wrong size, my fault. After a frustrating trip to Home Depot, followed by a frustrating trip to AutoZone, I bought aluminum exhaust couplers. I know PVC couplers are better, but the 'Depoes really couldn't help me at all.
After the install, I didn't notice any difference. Nor sound, nor power. My butt-Dyno was not impressed.
All the DIYs on DCIs on E90post never stated the inside/outside diameter of the inlet hose, which sort of made the process a guessing game. The keyboard-pounders at AutoZone probably hated seeing me come in every 2 hours with a return/exchange, and the feeling was mutual.
If anyone can give me any idea on which couplers to buy and where, you would be given the highest of fives by me.
That's how I show my appreciation.
Any other tips on the how to improve the process would be mad cool too.
I GOT PICS.
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      09-07-2014, 07:58 AM   #2
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Good job doing this by yourself. Do you have a tune? I don't think it would be beneficial with stock tune.
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      09-07-2014, 08:12 AM   #3
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It doesn't look much different than BMS DCI. I just installed the DCI yesterday from BMS, and have BMS cowl filters. I can tell you the sound is night and day for me, the intake is very loud and my stock diverter valves were much louder as well (HKS BOV ordered and on the way). It sounds amazing, and like a completely different car, but a lot of it could be my cowl removal too.
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      09-07-2014, 08:49 AM   #4
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You are not going to see any hp gains from this mod. Also, with all the running around you had to do, it probably would have been worth the $100 to get the BMS ones, no?
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      09-07-2014, 09:02 AM   #5
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Quote:
Originally Posted by '___' View Post
You are not going to see any hp gains from this mod. Also, with all the running around you had to do, it probably would have been worth the $100 to get the BMS ones, no?
Problem is BMS no longer ships these to Cali.

I ran these with my JB4 for months, then switched back to stock airbox for a while thinking their wasn't any difference. However when I went back to the DCI I feel like in the upper RPM range I had gained a little more power or atleast easier breathing for the engine. BTW I'm full bolt-on minus meth so that could be why. DCI alone though are definitely not that noticeable.

I've also read that removing the cowl really opens up the sound of everything under the hood.
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      09-07-2014, 09:11 AM   #6
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I had a SSTT I bought on ebay. It wasn't till it arrived that it had a note saying it might throw a SES light, but it would go away. It never did. I took it off because I was tired of being asked about the light.
I was looking into JB+ if anyone has one.

Also, Burger won't send a dci kit to California, I tried.
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      09-07-2014, 09:15 AM   #7
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http://www.vr-speed.com/vrsf-perform...-e92-e60.html?

VRSF makes an identical unit, S&B filters and all, just their badge on it. With the running around, cutting, time spent doing all of this, I don't think you saved yourself much money

Good job on doing it yourself, but i'm just not a fan of those metal capped cheapo filters. Every time I see them on a car they're all rusted, etc.
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      09-07-2014, 09:16 AM   #8
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Quote:
Originally Posted by Asian Sensatian View Post
It doesn't look much different than BMS DCI. I just installed the DCI yesterday from BMS, and have BMS cowl filters. I can tell you the sound is night and day for me, the intake is very loud and my stock diverter valves were much louder as well (HKS BOV ordered and on the way). It sounds amazing, and like a completely different car, but a lot of it could be my cowl removal too.
What was the size of the air filter inlet and the couplers?
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      09-07-2014, 09:18 AM   #9
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I'd be more weary of the filtering capability of a cheap no-name Autozone filter.

We also sell a DCI kit that use the same high quality S&B filters BMS uses for about $95, not sure what your time is worth to you but the $95 is worth more than the two hours spent alone.
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      09-07-2014, 09:18 AM   #10
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Quote:
Originally Posted by Debacle of Mass Eruption. View Post
I had a SSTT I bought on ebay.
What is this??
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      09-07-2014, 09:21 AM   #11
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Quote:
Originally Posted by 335NJ View Post
http://www.vr-speed.com/vrsf-perform...-e92-e60.html?

VRSF makes an identical unit, S&B filters and all, just their badge on it. With the running around, cutting, time spent doing all of this, I don't think you saved yourself much money

Good job on doing it yourself, but i'm just not a fan of those metal capped cheapo filters. Every time I see them on a car they're all rusted, etc.
The filters were $10 each, the couplers were $4 each. What I had problems with was the sizes and dimensions. Also the help from the Home Derpers made things difficult.
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      09-07-2014, 09:23 AM   #12
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Originally Posted by pioneercrazed View Post
What is this??
Split second turbo timer. Old school JB+
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      09-07-2014, 09:25 AM   #13
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Quote:
Originally Posted by Tiago@VRSF View Post
I'd be more weary of the filtering capability of a cheap no-name Autozone filter.

We also sell a DCI kit that use the same high quality S&B filters BMS uses for about $95, not sure what your time is worth to you but the $95 is worth more than the two hours spent alone.
What does the full kit Include? Can it be shipped to California?
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      09-07-2014, 09:28 AM   #14
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Quote:
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What does the full kit Include? Can it be shipped to California?
My buddy bought the VRSF DCI for his 135i and it's a nice kit. Basically it's just filters, tube's, 2 clamps if I remember correctly. Pretty much the same as my BMS setup.
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      09-07-2014, 09:29 AM   #15
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Quote:
Originally Posted by Debacle of Mass Eruption. View Post
What does the full kit Include? Can it be shipped to California?
Everything required to remove your old intake and install this one. We ship anywhere in the world
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      09-07-2014, 09:32 AM   #16
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Quote:
Originally Posted by Tiago@VRSF
Quote:
Originally Posted by Debacle of Mass Eruption. View Post
What does the full kit Include? Can it be shipped to California?
Everything required to remove your old intake and install this one. We ship anywhere in the world
how fast do you ship to 94303?
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      09-07-2014, 09:32 AM   #17
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      09-07-2014, 07:02 PM   #18
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Quote:
Originally Posted by Debacle of Mass Eruption. View Post
The employees I encountered at home Depot know very little about PVC piping, they didn't even know what a coupler was. They employees at Autozone asked me my make and model when I went in there for a coupler. They didn't know what this was for nor was it something they needed to know.
The personal insult a pretty b!tch thing to do.
I personally work on muscle cars and work at a machine shop that makes components for Tesla. I know a little about cars. The 335i is my commuter, European cars are kinda new to me. If you wanna help, cool. If you wanna be a c*nt, go soak a tampon.
It doesn't really seem like that. I personally wouldn't drive around with those filters on my car. The filters used on the BMS or VRSF DCI aren't very expensive and are proven. You drive a BMW not a Civic so the mods will be more expensive and aren't meant to be hacked together like you did. Good luck with your future modding though.
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      09-08-2014, 02:27 AM   #19
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yup

Quote:
Originally Posted by 10splaya22 View Post
It doesn't really seem like that. I personally wouldn't drive around with those filters on my car. The filters used on the BMS or VRSF DCI aren't very expensive and are proven. You drive a BMW not a Civic so the mods will be more expensive and aren't meant to be hacked together like you did. Good luck with your future modding though.
Thanks for the valid input. Looking at it now, I was over-simplifying the mod, which turned out to further complicate things for me. I'm still using my muscle car mentality. I am leaning towards VRSF or a BMS kit if I can find a local seller.
It does look a little mickey mouse too, all I need now is a spoiler and a fartbox
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      09-08-2014, 09:36 AM   #20
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Those auto zone filters are crap. Either go with the VRSF ones, or CP-E, etc. They're worth the extra monies.

Also, how can you work at a machine shop and refer to figuring out the inside/outside diameter of an inlet hose as a "guessing game?" What exactly do you do there? This thread is befuddling, to say the least.
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      09-08-2014, 09:44 PM   #21
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Quote:
Originally Posted by Tiago@VRSF View Post
Everything required to remove your old intake and install this one. We ship anywhere in the world
I got VRSF Dual cone, it works great!!!
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      09-08-2014, 09:53 PM   #22
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I did this myself but the PVC couplers ended up deforming due to heat. No matter how tight I made the clamps, the couplers would eventually go out of round and become loose. I ended up with BMS DCI, I suspect you will too if you used PVC. Keep an eye on it, like every time you park it for a while. Might fall off. I like the DIY mantra tho.

Edit, totally missed the aluminum part. Well, fair warning to anyone else who might try PVC.
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