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3d printed intake for N/A NA miatas

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Old 08-02-2017, 07:42 PM
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If anyone doesn't want to cut into their MAF wiring, I found a extension on amazon that should fit with 1.8 NA for $19.99.

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Toyota MAF Mass Air Flow Sensor Extension Harness - 24" Denso 5 wire pin | eBay

Originally found from miata.net:
https://forum.miata.net/vb/showthread.php?t=634036

I'm going to order from amazon since I have a prime membership, and will report back on fitment once I receive it!
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Old 08-03-2017, 02:29 PM
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Originally Posted by kollunz
If anyone doesn't want to cut into their MAF wiring, I found a extension on amazon that should fit with 1.8 NA for $19.99.

Originally found from miata.net:
https://forum.miata.net/vb/showthread.php?t=634036

I'm going to order from amazon since I have a prime membership, and will report back on fitment once I receive it!
We have the Plug connector and just got in the Receptacle connector. Going to be adding this shortly to our website. Watch out for that part with crimp quality, wire quality, etc. Nearly every time we test or QC parts like that from random sellers, they are made in China junk. We make ours here in the US with rigorous QC. Usually it is the terminals and the crimps that are the worst issue.
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Old 08-07-2017, 06:45 PM
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Originally Posted by scottns
I recently did this setup. Added a bit of growl at WOT which sounds nice too.

I just got all my parts in and tried to fit it. I have the exact same radiator as you, but I can't get the hood to close down! Did you modify your hood to clear the intake?

Edit: nvm, I got it close down. I have a radiator panel that I removed to get this to fit.

Last edited by kollunz; 08-07-2017 at 10:17 PM.
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Old 08-08-2017, 12:13 PM
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Originally Posted by freakaccident
I spent about $275 total.

I'm sure Alec will chime in about licensing.

I don't know what to say.
$80+35+15+15= $145 to make mine operational.
Originally Posted by Uncle Humjaba
I would recommend you recent builders tape the entire exterior of the thing with some sort of heat tape. Not only will this help it reflect the heat from that radiator, but it reduces the likelihood of a crack occurring, and if it does, your intake is still airtight. Mine cracked almost instantly and I ran it for another year or so held together with HVAC tape.
Darn good idea!
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Old 09-10-2017, 01:52 PM
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Interesting - tried downloading the file and uploading to 3d hubs and tinkercad both. Both indicated an error message when uploading the 1 piece file.
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Old 09-10-2017, 02:05 PM
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What was the error? What were you trying to do? Which file did you download?

If you downloaded the STL file it's not something you can open in a CAD program and edit, it's a file used to print the intake.
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Old 09-10-2017, 02:22 PM
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Originally Posted by aidandj
What was the error? What were you trying to do? Which file did you download?

If you downloaded the STL file it's not something you can open in a CAD program and edit, it's a file used to print the intake.
I re-downloaded and it worked. I was trying to load it to tinkercad, which is a STL tool for design.
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Old 09-10-2017, 09:04 PM
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Originally Posted by aidandj
What was the error? What were you trying to do? Which file did you download?

If you downloaded the STL file it's not something you can open in a CAD program and edit, it's a file used to print the intake.
There are most certainly mesh editors, but it's a terrible format to work with.

Last edited by hi_im_sean; 09-12-2017 at 02:53 PM.
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Old 09-12-2017, 12:33 PM
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Originally Posted by kollunz
I just got all my parts in and tried to fit it. I have the exact same radiator as you, but I can't get the hood to close down! Did you modify your hood to clear the intake?

Edit: nvm, I got it close down. I have a radiator panel that I removed to get this to fit.
I used a rubber mallet and some gentle taps on the underside of the hood where it meets the intake. I've had varies issues with rubbing in different spots in the hood and have adjusted the hoses, clamps, etc. many times to mitigate it.
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Old 11-08-2017, 11:48 PM
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Default did you get your intake - can you send some pics

dis

Originally Posted by freakaccident
For those that are wanting to do this and retain MAF and IACV check this out:
did you already get your 3D intake? I would like to see it and also ask you where i can go to get one made. Thanks.


3/4" Hose Through Hull Fitting - Straight Through Discharge
and
Through Hull Jet Ski Water Bypass Fitting Bilge 3/8 - Straight Thru eBay
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Old 11-10-2017, 11:11 AM
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Here's mine... And yeah, I should probably get a proper breather hose, maybe. Disregard the overabundance of collars back there too, that was a temporary thing lel.

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Old 11-13-2017, 01:31 AM
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I wasn't clear if this fit with air conditioning. Did it only fit with the smaller filter? My AC broke so I'm debating between fixing it or going full track car, and this might tip the scales to removing it.
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Old 11-13-2017, 12:38 PM
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Originally Posted by moocow
I wasn't clear if this fit with air conditioning. Did it only fit with the smaller filter? My AC broke so I'm debating between fixing it or going full track car, and this might tip the scales to removing it.
I have AC in my car and everything fits although the filter is tight behind the grill. Makes it hard to tighten the filter clamp but it's doable from underneath with the lower tray removed.
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Old 11-14-2017, 10:29 PM
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My air filter fell off somewhere between Indianapolis and Gingerman Raceway in Southhaven Michigan. I had a Chumpcar race there in the Mustang but drove the Miata and met the team. I opened the hood in the paddock to show someone the intake and the damn filter was gone. I grabbed a sock filter out of the race trailer and zip tied it on there to get home.

The design needs a ridge to prevent the filter from falling off. It is nearly impossible to get up in there to tighten it down.
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Old 11-14-2017, 10:33 PM
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Originally Posted by freakaccident
My air filter fell off somewhere between Indianapolis and Gingerman Raceway in Southhaven Michigan. I had a Chumpcar race there in the Mustang but drove the Miata and met the team. I opened the hood in the paddock to show someone the intake and the damn filter was gone. I grabbed a sock filter out of the race trailer and zip tied it on there to get home.

The design needs a ridge to prevent the filter from falling off. It is nearly impossible to get up in there to tighten it down.
This happened to me during a 60 mile drive. Luckily, the filter pod was still wedged in between my bumper and radiator. I haven't tracked since installing this intake, but I'm really worried about the pod filter popping out again.
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Old 11-14-2017, 11:22 PM
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I dont know how much space you have with an aftermarket rad, but OEM you can wiggle the filter on there pretty decently and then place the collar so you can tighten with a small ratchet. Never had it fall off in over a year and a half. Tracked over 12hrs.
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Old 11-17-2017, 01:28 AM
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Here’s mine:



ordered through makexyz. I think infill was 15% or something slightly above the default. used the silicone intakes hose adapter, i think a reducer from 1/2” to 3/8 npt then the right angle adapter for the IAC hose. Used leftover 2.5” piping between the 2.75” couplers so i need to get the correct size.
unfortunately i got too excited and threw it on without acetone vapor treatment or anything of the like. Over time it has losts its shape and pancaked further, reducing air flow and ive had to make small edits to my tune accordingly. it has deformed especially due to the shape of the hood right above the intake and obviously the hot temperatures. Also it keeps shrinking where i clamp the filter (and the silicone coupler) so my filter keeps falling off too. I lost one already, the second one ive had ziptied to the chassis so that i dont lose it when it falls off. I’ve gotten used to reaching up in there with a short 1/4”drive flex head ratchet and a deep 8mm, you just install the filter/clamp in a location that works for you.

when i first installed it tho, the car ran noticeably better especially after dialing in the tune further. It allowed my VE cells to be more consistent and linear and my AFR’s were more linear as well, in comparison to a DIY racing beat style intake. It felt better low end in response and more consistent up top. But performance has minimally been diminishing as it shrinks, i can tell.

plan is to get another one made A$AP but im having trouble sourcing someone who will make it and vapor polish it. I dont really want to do it myself, the printer OP used never got back to me on several attempts. so if anyone has a lead on vapor polishing or heat treating it im open to suggestions. Otherwise i might tackle it myself, i want to get a new one on by the end of the year.

Pic of it now, in comparison to when it was freshly installed in the above pic.
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Old 11-20-2017, 05:50 AM
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I really wish a company would make these in abundance for public consumption, instead of all the running around stuff.
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Old 01-17-2018, 11:58 AM
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Such a good idea, keep at it guys.
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Old 01-17-2018, 12:41 PM
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I bought a large coreXY printer at xmas and I'm working on converting it to print straight polycarbonate. Even with a thin wall (1.2mm) polycarbonate ought to be strong enough for end use. Also the TG is 150c which is as better than most room temp cure epoxy resins. Being able to have a strong enough part with thin walls will also make doing the 2016 redesign feasible so they will flow better than the existing 3d printed versions.

Once I have it printing the intakes in PC reliably i'll just crank them out about one a day.
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