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Old 04-07-2010, 08:56 PM   #1
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Default What will control my vvt. WTF

Ok guys it has come to starting a noob thread. I apologize i really do. But after relentless searching and reading through the vvt thread, Hell i even Sent Brianiac a PM and got no response.

This is so Noob its sad. I need to Know What kind of management you 2001+ Guys are going with. Leaving out the mazdaspeed guys.

Ok so i have read that megasquirt can be installed parallel BUT i also read that it cannot. I get both sides and mostly older Threads so i do not know what to make of it. So if someone could answer that i would greatly appriciate it.

Two: Is it worth it? I have also read just as many threads where people just remove the vvt all together. Two Problems with this. One being that i would love to be able to easily switch back to stock. Two I do not want to mess with getting a different head for the car.

I have a supercharger currently and plan on turning up the boost, Or switching to Turbo. But as of right now all i have is a poopy powercard And Timing controller from jackson racing.These are bandaids I want a full set up.


ANSWER ME THESE QUESTIONS. and thank you if you can. Also if i can get someone to build me a mega squirt get me their info i am very interested. Even if i have to go back to NA to tune and start my turbo part collecting
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Old 04-07-2010, 09:10 PM   #2
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hydra or adaptronic
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Old 04-07-2010, 09:41 PM   #3
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Currently if you read the other thread about VVT there is an independent VVT controller being built by a member. It should work with any engine management and allow control over VVT. He says the first batch of boards should be done sometime in the next couple of months.

Next MS3 is supposed to support VVT in the future. Ken says it will be sometime this summer at the soonest.

The already complete options are Hydra, adaptronic, or AEM.
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Old 04-08-2010, 12:03 AM   #4
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pretty much any ECU can be run in parallel.

there are simple ways to do it that will allow the stock ECU to do all the hard work and the parallel ecu to do only fuel and spark.

there are more advanced ways to do it that trick the stock ECU into handling VVT properly as well.

there are even more complicated ways to do it that can make the ECU OBDII compliant and not throw a code*. dont bother with this. it's not really worth it.

* for a while

plus you WANT VVT. Trust me. look at my post count. I wouldn't lie about this.

indeed the hydra and adaptronic both control VVT. I have first hand experience with the older hydra system and it works as advertised. I have not yet had the adaptronic running the VVT, but rather went with the third option above and had the stock ECU controlling it via various crazy methods.
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Old 04-08-2010, 03:39 AM   #5
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well i planned on being flamed for this post. But none the less you guys were not too harsh on me. I am thankfull for that.

I did see the vvt controller mentioned but also were some sarcastic remarks made to where it was hard to understand over the internet if it true or not. Did not read too much into though.

And all i am looking for is a setup to control fuel and spark. Do not want my bandaids if i plan to take the journey to more power. Before i decide to do that i would rather have the management figured out.

So far adaptronic and hydra.

Could i have a normal megasquirt built in specific for a parallel setup and it still be cost effective. ( as in does not cost as much as the other two options.)Of course i would rather pay someone to build it for me. I think this would be over my head for a first time build to megasquirt.

All the information is greatly appriciated. Thank you
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Old 04-08-2010, 04:23 AM   #6
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Does anyone ACTUALLY control VVT using the Adaptronic? I know Hydra does it, I have my AEM doing it, but I've never actually heard anyone doing it with the Adaptronic.
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Old 04-08-2010, 04:38 AM   #7
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Default another couple of options

are the AEM FIC (Fuel/Ignition Controller) and the XEDE piggybacks. These will only control fuel/spark, everything else will be done by the stock ECU.

Either will give you much more control than the powercard. They have the advantage of maintaining OBD-II emissions compliance (since the stock ecu is still there) if that matters.
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Old 04-08-2010, 10:24 AM   #8
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Quote:
Originally Posted by turbotyla View Post
I did see the vvt controller mentioned but also were some sarcastic remarks made to where it was hard to understand over the internet if it true or not. Did not read too much into though.
True, yes. In volume production and commercially available, not yet.
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Old 04-08-2010, 07:10 PM   #9
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I here new yes.

Will be running XEDE soon I hope.

Sorry if I haven't read up more on 2001+ boosted cars.

If the stock ECU is allowed to control the VVT like it always did before what are the potential downsides when being turbo'd?

Twice a day I get to feel the rush of power at 3000rpm or so while the car is still warming up on my way to and from work. Does pushing pounds of positive air and having the VVT give crazy spikes or drops in power (even when warmed up) at 2 RPM points (low/high)does it make drivability a bit finicky?


Cleaned up like a nice guy respecting a legit request - but still wondering about leaving the stock ECU to handle VVT with turbo and drivability?

Last edited by Landrew; 04-08-2010 at 09:51 PM.
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Old 04-08-2010, 09:20 PM   #10
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Quote:
Originally Posted by Landrew View Post
ps - who has the highest post count that has never owned a turbo Miata.
His name is Hustler, but he has a turbo now. And if you talk **** to him he will skullfuck your mother.
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Old 04-08-2010, 09:24 PM   #11
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done

Last edited by Landrew; 04-08-2010 at 09:47 PM.
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Old 04-08-2010, 09:46 PM   #12
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^^^^ I want this thread to be helpfull so please dont junk it up with stupid ****.
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Old 04-09-2010, 12:52 AM   #13
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Quote:
Originally Posted by Landrew View Post
Twice a day I get to feel the rush of power at 3000rpm or so while the car is still warming up
That is not the VVT. That is the VTCS. It gets worse with the turbo. There is a green check valve for it under the throttle body. Pull that hose and plug both ends.

VVT has almost no effect on drivability. It has a huge effect on low end power and top end power.

The stock ECU's method for controlling the VVT is probably as good as anyone without a full 40 hour work week on the dyno is going to get. When I log it versus my estimated ideal map, it seems to do the right thing at the right time.
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Old 04-09-2010, 02:57 AM   #14
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so y8s what you are saying is that the factory vvt settings ( or control) are great even with boost.


So should i look at a piggy back setup that will control my fuel and spark and leave my factory ecu in place to do the rest.

Could i get a megasquirt built for this specific purpose ?
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Old 04-09-2010, 03:44 AM   #15
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oops, nevermind.
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Old 04-09-2010, 10:56 AM   #16
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Quote:
Originally Posted by turbotyla View Post
so y8s what you are saying is that the factory vvt settings ( or control) are great even with boost.
More what I'm saying is that RPM plays most of the role in determining the VVT settings.
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Old 04-09-2010, 12:20 PM   #17
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Quote:
Originally Posted by y8s View Post
That is not the VVT. That is the VTCS. It gets worse with the turbo. There is a green check valve for it under the throttle body. Pull that hose and plug both ends.

VVT has almost no effect on drivability. It has a huge effect on low end power and top end power.

The stock ECU's method for controlling the VVT is probably as good as anyone without a full 40 hour work week on the dyno is going to get. When I log it versus my estimated ideal map, it seems to do the right thing at the right time.
Thanks for clarifying VTCS and VVT.

Would I see any benefit to disabling VTCS with a normally aspirated engine? Does is help cold starts, cold off idle power ?
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Old 04-09-2010, 02:05 PM   #18
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As far as Megasquirts are concerned, there are at least 4 NBs here in Greece that run full standalone: One N/A (mine), two turbo'ed and one supercharged.

Jim
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Old 04-09-2010, 02:58 PM   #19
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Quote:
Originally Posted by Reverant View Post
As far as Megasquirts are concerned, there are at least 4 NBs here in Greece that run full standalone: One N/A (mine), two turbo'ed and one supercharged.

Jim
Are you using the MS to control VVT in any way?
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Old 04-09-2010, 05:31 PM   #20
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Quote:
Originally Posted by Savington View Post
Does anyone ACTUALLY control VVT using the Adaptronic? I know Hydra does it, I have my AEM doing it, but I've never actually heard anyone doing it with the Adaptronic.
Me!

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