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Old 01-04-2010, 06:10 PM   #1
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Default VVT locking

In anticipation of fitting a MK2.5 VVT motor to my car (96 MK1), and being currently unable to control the VVT I need to lock it off.

I'm unsure as to how you lock the VVT off, can anyone let me know?

Also in what direction should I lock it off. I'm not too bothered about sacrificing low end torque as it will have an MP62 strapped to the side of it.

Cheers!
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Old 01-04-2010, 06:32 PM   #2
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do nothing. unplug the connector on top of the valve cover to the OCV.

it will lock itself at full retard and basically give you the "top end" powerband.
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Old 01-04-2010, 07:31 PM   #3
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Quote:
Originally Posted by y8s View Post
do nothing. unplug the connector on top of the valve cover to the OCV.

it will lock itself at full retard and basically give you the "top end" powerband.
Awesomeness, Likely the be the easiest part of the swop

Cheers!
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Old 01-05-2010, 12:29 AM   #4
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Just get an EMS that can control it and actually enjoy the feature.


But, leaving it disconnected wont kill you.
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Old 01-05-2010, 04:19 AM   #5
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Uhhh yeah okay spending money needlessly sounds a great idea!

MS will be able to control it in the future, I can wait.
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Old 01-05-2010, 07:45 AM   #6
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Originally Posted by miatamania View Post
Just get an EMS that can control it and actually enjoy the feature.


But, leaving it disconnected wont kill you.


Show me an ecu that successfully controls vvt in a na car besides hydra.
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Old 01-05-2010, 08:14 AM   #7
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Easy. Adaptronic.

Misses the point though, I'm not changing my EMS
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Old 01-05-2010, 12:57 PM   #8
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Originally Posted by longuyen88 View Post
Show me an ecu that successfully controls vvt in a na car besides hydra.
Haltech, and a good bit cheaper that the Hydra also. Once we are done with all the necessary testing I'll be happy to show you.


But seriously. I talked to the guys at DIY at PRI, it seems like the VVT stuff is coming a long way.
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Old 01-05-2010, 01:47 PM   #9
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Originally Posted by richyvrlimited View Post
Easy. Adaptronic.

Misses the point though, I'm not changing my EMS
I definitely think it's worth the hassle to get VVT running if you have a VVT head.

I thought one guy has tried it but I haven't heard anything as far as progress to getting the adaptronic and vvt to speak the same language on the NA car.

Interested in the haltech but it seems like miata guys don't run those units too often..
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Old 01-05-2010, 01:58 PM   #10
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Because there isn't a harness built for one yet basically.

If it can run the GT-R we ran, it'll happily run a miata. lol
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Old 01-05-2010, 02:31 PM   #11
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Quote:
Originally Posted by longuyen88 View Post
I definitely think it's worth the hassle to get VVT running if you have a VVT head.
It might well be if you've got money coming out of your ears but I haven't

Nor do I have the inclination at the minute to learn a new ECU. I'm very happy with my MSII setup. VVT control will come in time, and until then I'll live with the 'loss' of low down torque.

Beside I'd wager a VVT head locked down to full retard will still put down more torque than the current motor did/does at low revs
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Old 01-05-2010, 04:47 PM   #12
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Quote:
Originally Posted by richyvrlimited View Post
It might well be if you've got money coming out of your ears but I haven't

Nor do I have the inclination at the minute to learn a new ECU. I'm very happy with my MSII setup. VVT control will come in time, and until then I'll live with the 'loss' of low down torque.

Beside I'd wager a VVT head locked down to full retard will still put down more torque than the current motor did/does at low revs
I totally understand what you mean.... I am eagerly waiting to pull the trigger on a DIYPNP but I need a timetable for the VVT standalone unit.
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Old 01-05-2010, 06:55 PM   #13
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I wonder if the MS3 will be able to handle VVT. Anyone know or has this been discussed?
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Old 01-05-2010, 07:40 PM   #14
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plenty Megasquirt MSEXTRA and MS3EFI • View topic - Variable valve timing

Cliffs, it'll come, but every system is different so for a proper feedback system they'll be a wait. In the interim a PWM table will be offered.

ISTR there being talk of an optional board for MS/MSII being made, DIYAT have some involvement with it.
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