99-00 Intake Manifold Porting Anyone? - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 01-21-2008, 09:06 AM   #41
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Originally Posted by soflarick View Post
Dunno about that one, better ask Corky.

From the reading I did, it seems that turbo'd engines like the VICS working, and SC'd engines can deal without it. Corky would probably be the best source of info on the subject. I couldn't tell much difference between the VICS working or not on my MP62'd engine.

If the butterflies are intact, then the VICS would still be controllable. The solenoid controls the opening and closing of the butterflies.

I wish you could have done some dyno testing before and after. The data would have been a goldmine.

my 99 intake is untouched and on my car still. this was a spair intake i had. so i can still test it before and after and i might.
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Old 01-22-2008, 12:16 PM   #42
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I would really appreciate the before/after results. As I mentioned, I did some smoothing and odds and ends, but left the resonance chamber intact. I could always pull the upper off and port it out, but would rather leave it alone for now.

BTW, I dropped off the parts for you at Fedex. You'll get an email once Fedex processes it. I threw a couple extra items in there for you as I didn't need them.
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Old 01-22-2008, 08:54 PM   #43
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Originally Posted by soflarick View Post
From the reading I did, it seems that turbo'd engines like the VICS working, and SC'd engines can deal without it. Corky would probably be the best source of info on the subject.
While building my car, Corky welded the butterflies shut. His reasoning was that we needed the longer runners for low- and mid-range torque and that the FI would more than make up for the "lack" of short runners.

We'll test his theory soon enough as the car is slated for initial dyno tuning later this week. (First benchmark at 7psi. More to follow...)

- L
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Old 01-22-2008, 09:55 PM   #44
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Originally Posted by l_bader View Post
We'll test his theory soon enough as the car is slated for initial dyno tuning later this week. (First benchmark at 7psi. More to follow...)

- L
So you have two manifolds also (welded and OEM functional), and will swap them out to see if disactivating the VICS in the closed position makes a positive difference?

I'd rather see how Paul's gutted/polished/shorter-than-OEM-runner plentium (sp?) makes a difference over the OEM setup.
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Old 01-23-2008, 06:30 PM   #45
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Originally Posted by TurboTim View Post
So you have two manifolds also (welded and OEM functional), and will swap them out to see if disactivating the VICS in the closed position makes a positive difference?

I'd rather see how Paul's gutted/polished/shorter-than-OEM-runner plentium (sp?) makes a difference over the OEM setup.
Tim -

Sorry about the confusion.

No, I only have one manifold. I was referring to seeing how well a turbo responds to a disabled VICS...

I too am interested in seeing the results of Paul's efforts.

- L
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Old 01-24-2008, 01:03 AM   #46
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this is how well a turbo responds to a disabled VICS after 1 morning of tuning while driving to the dyno

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Old 01-24-2008, 08:27 PM   #47
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Looks darn good to me, still with a 2560? Did you lift right at 6800 or did it start to lost hp at that point? Is a turbo tq graph typically like that, or was the turbo possibly running out of steam after 5500?
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Old 01-24-2008, 09:01 PM   #48
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i think that was a lift around 6800.

no idea of typical torque curve but here's me vs. everyone else there that day



if it's not obvious the lower 3 cars are NA.
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Old 02-10-2008, 10:11 AM   #49
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i guess now i'll have to do before and after dyno testing http://www.mazda-speed.com/forum2/in...c,12624.0.html
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Old 02-11-2008, 09:57 AM   #50
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hahaha
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Old 02-13-2008, 08:57 PM   #51
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just got me a spare manifold what do you guys think should i do it????? is it worth?????? i am eager to do it
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Old 02-14-2008, 02:18 AM   #52
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i haven't finished and tested mine yet. it's a ton of work and easy to **** up
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Old 02-14-2008, 11:31 AM   #53
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i haven't finished and tested mine yet. it's a ton of work and easy to **** up
+1. All I did was grind out the flash and smooth out the rough texture with 80 grit, and it took 4-eva
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Old 02-14-2008, 12:55 PM   #54
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i would really like to see how good or bad it would work. are you guys going to get rid of the flaps on the runners or keep them? i guess i can find higher priority work to do for now till someone gets the OK. love to hear more about it when it is done.
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Old 02-14-2008, 01:01 PM   #55
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yeah Paul is keeping the flappers. The manifold is basically going to be stock. You can see in the pics that the flappers are still there. Yep.
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Old 02-14-2008, 01:07 PM   #56
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I have an 01 manifold I'm considering running instead of the 99 manifold. No VICS FTW?
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Old 02-14-2008, 02:15 PM   #57
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I have the bestest idea. Leave the car stock and enjoy driving it instead of trying to find something to "fix".
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Old 02-14-2008, 02:20 PM   #58
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no ****
Tim FTW
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Old 02-14-2008, 04:29 PM   #59
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Originally Posted by TurboTim View Post
I have the bestest idea. Leave the car stock and enjoy driving it instead of trying to find something to "fix".
kind of late for that lol ******* **** up is a bit more fun ... sometimes i vuess i will just wait a bit to see results
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Old 02-25-2011, 12:19 AM   #60
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Originally Posted by cjernigan View Post
Saw this a long time ago, just never looked into it. Anyone done this or know anyone that has done it?

So trackdog racing is the company that did this 1999 manifold porting out right? That looks very clean and I would love to just ship my manifold and have them port it out. Do you guys think they would be willing to do it for me? I need to get this done soon because I'm rebuilding my motor next month. Is there anyone in SoCal would can do this for me? I'll pay you guys.
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