3 Intake Manifolds 2 Prices You decide - Miata Turbo Forum - Boost cars, acquire cats.

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View Poll Results: Which option do you want available?
Intake manifold without multiple throttles 10 25.00%
Intake manifold for AE throttles and you buy your own 3 7.50%
Intake manifold with B.E. throttles 28 70.00%
Multiple Choice Poll. Voters: 40. You may not vote on this poll

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Old 02-11-2009, 07:50 PM   #1
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Default 3 Intake Manifolds 2 Prices You decide

Intake manifold without independent throttles $619

Intake manifold with AE series throttle support and you buy your own throttles. $619

Intake manifold with Boundary Engineering Oval Throttles $759


All Carbon fiber plenums good to 400*F and 3 Bar

1 can be upgraded to 3 with the purchase of another flange with throttles.

We will only be making 2 molds for these. One for the 94-97 and one for the 99-up. Options 1 and 3 use the same plenum. Option 2 uses a different plenum.

Vote now, and tell me what you want. In 5 weeks they'll be here for the 94-97 and 99-up.

Last edited by TravisR; 02-11-2009 at 08:06 PM.
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Old 02-11-2009, 07:58 PM   #2
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Can you better describe these? I don't know what the differences are. So the first one has no throttle? Does it use a regular throttle body? No idea about 2. 3 I would guess has the individual throttles like your prototype?
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Old 02-11-2009, 08:04 PM   #3
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All the plenums have built into them provisions for a single throttle body system. If you dont use the provision (your using multiple throttles) you just get a pipe adapter where you can bolt up your pipe coupling. If you are using the single throttle option it will work with the stock throttle, but I've also got something coming out soon that will blow your mind with throttle bodies that supports airflow to 600 hp easy. Its not just bigger, its better.
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Old 02-11-2009, 08:14 PM   #4
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Default no 1.6l?

No 1.6l option? Oh well, I guess I'll just go with a custom one.



Xcessive Manufacturing



Xcessive Manufacturing

These should make a good beginning.
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Old 02-11-2009, 08:25 PM   #5
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No 1.6 CF intake? I'm pissed

Vash-
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Old 02-11-2009, 08:25 PM   #6
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Yea, looks like a good idea. I know you guys already have a couple of intake manifolds out, and I don't have the 1.6L head to pull off yet another bolt and port pattern. The setup for just one of the intake manifold flanges past the amount of hours it costs me is around 3k for the CNC coding and tooling. The molds are 5k a piece, its alot of money to go into a market that has alot of competition.

If I get 10 commited 1.6L guys I might entertain it. Jeeze, I didn't know there were that many hanging around.
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Old 02-11-2009, 08:31 PM   #7
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What kind of benefits are you expecting to see versus the oem manifold? Is something worthwhile for low boost applications?
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Old 02-11-2009, 08:33 PM   #8
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Who makes a 1.6l IM??? Begi makes a 1.8l one. Both 1.6 and 1.8 have a few ITB setups for them. I haven't found any IM for a 1.6, and I have LOOKED EVERYWHERE.
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Old 02-11-2009, 08:36 PM   #9
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So can you explain option 2 please? What's an AE throttle?
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Old 02-11-2009, 08:37 PM   #10
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Quote:
Originally Posted by patsmx5 View Post
So can you explain option 2 please? What's an AE throttle?
I got this one.

The ITB setup that came on the 4AGE AE86/AE101 cars.
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Old 02-11-2009, 08:46 PM   #11
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Quote:
Originally Posted by ray_sir_6 View Post
Who makes a 1.6l IM??? Begi makes a 1.8l one. Both 1.6 and 1.8 have a few ITB setups for them. I haven't found any IM for a 1.6, and I have LOOKED EVERYWHERE.
eBay Motors: Mazda MX-5 Miata 1.6l intake manifold B6 1992 up MX5 (item 350154912285 end time Feb-16-09 21:29:54 PST)
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Old 02-11-2009, 08:50 PM   #12
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Wow, you got it before I did SV eBay Motors: Mazda MX-5 Miata 1.6l intake manifold B6 1992 up MX5 (item 350154912285 end time Feb-16-09 21:29:54 PST)

Its going in there anyways!

The manifolds are designed for the guys making somewhere south of 400 whp and on a not massively modded head. If you have alot of mods to your head, and your flowing incredible amounts of air at high rpm then you can benifit from larger runners.

Generally the torque shift will be up by 500 rpms, and extend and enhance your power band to 8000 rpm. As soon as the turbo spools you'll see a power increase over stock.
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Old 02-11-2009, 08:57 PM   #13
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I might would be interested in the first one. I'd like to see the finished product tested first though before I jumped. IE-dyno results of before/after showing torque enhanced in the upper RPMs. Not that I could afford one till this summer anyway. Hopefully by then it will be tested and we'll know how well it works.

I do have extensive headwork though, so how would it work on these? What kind of runner length, diameter, and plenum volume does the new IM have?
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Old 02-11-2009, 09:12 PM   #14
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Your asking for the secret sauce Pat.

The head work is only going to really effect you if your pushing the limits I was talking about. The runners flow far far more then head at even pressure drop. Once you get to about 280-300 CFM of head flow the intake manifold becomes a limit again. With an optimized manifold for 500 plus horsepower you can probably net another 3-5 percent over the current design.

With this design you should easily get 15 percent at 8000 RPM, at atleast 10 percent at 7000, at peak torque 7-8 percent at eqaul boost.

This isn't a commitment I just want to know what direction you guys would prefer.

Last edited by TravisR; 02-11-2009 at 09:27 PM.
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Old 02-11-2009, 09:30 PM   #15
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Hmmm. Well, how about this: Is the plenum volume greater than 1.8L? Comparable to stock? Anything? Also, any flow numbers on a stock 99' head? I'm sure I added 50cfm or so to stock at peak lift. Dunno it that would put me to 280 or not. Guess I'll have to wait till there's some flow data or real world before/after dyno results.
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Old 02-11-2009, 09:35 PM   #16
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Much larger then the 1.8L plenum that is for sure. The numbers will be here soon enough.
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Old 02-11-2009, 10:44 PM   #17
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Quote:
Originally Posted by TravisR View Post
Wow, you got it before I did SV eBay Motors: Mazda MX-5 Miata 1.6l intake manifold B6 1992 up MX5 (item 350154912285 end time Feb-16-09 21:29:54 PST)

Its going in there anyways!

The manifolds are designed for the guys making somewhere south of 400 whp and on a not massively modded head. If you have alot of mods to your head, and your flowing incredible amounts of air at high rpm then you can benifit from larger runners.

Generally the torque shift will be up by 500 rpms, and extend and enhance your power band to 8000 rpm. As soon as the turbo spools you'll see a power increase over stock.
Let me rephrase my question:

A GOOD IM for a 1.6l? Ebay crap is just, well, crap.
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Old 02-12-2009, 01:14 AM   #18
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Quote:
Originally Posted by ray_sir_6 View Post
Let me rephrase my question:

A GOOD IM for a 1.6l? Ebay crap is just, well, crap.
+1

Seller is in Bangkok and has "nos" in his name...
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Old 02-12-2009, 02:01 AM   #19
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Would you 1.6 owners quit bitchin? BEGi is making manis for you. If you all pony up I'm sure Travis will too. You're just not first in line this time, deal with it.
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Old 02-12-2009, 02:08 AM   #20
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Quote:
Originally Posted by MazDilla View Post
Would you 1.6 owners quit bitchin? BEGi is making manis for you. If you all pony up I'm sure Travis will too. You're just not first in line this time, deal with it.
Actually, it was on the home page when I looked.

BEGi - - Front Page News - 1.6L_IntakeManifold

Still not done, but they are at least working on it. I'm wondering why there are no velocity stacks in the Begi one.

But for the 1.8l guys:

Intake Manifolds - BEGi

Already have them for the 1.8l, and have had them for a little while.
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