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Old 03-05-2008, 03:12 PM   #1
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Default Boosting 01+ cars

So i have a 02 w/ VVT and i'm looking at a FM2 kit sense mr. hydra is the only thing I've seen so far that lets me tune vvt. I really have no idea what my chooses are so any suggestions or info on 01+ car running 250whp bolt on systems?

and hustler keep your ball gags to yourself.
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Old 03-05-2008, 03:15 PM   #2
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and hustler keep your ball gags to yourself.
Nice first post.
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Old 03-05-2008, 04:16 PM   #3
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The VVT only operates on the intake cam. You can use any ECU you want and simply pin the cam halfway on it's range. The engine will run just like any non-VVT 1.8.

On a GT2860, you should make 250whp on 14-15psi with no help at all from VVT.

And concur... excellent first post. Make this guys a mod.
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Old 03-05-2008, 04:40 PM   #4
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it's my understanding that it was also timing related and at about 6k it goes from max advantaged timing to stock timing in prep of redline, because of this you lose at lest 15% power. if that no true let me know but if you saying it only works on the intake cam could i just buy a 99 head w/ none vvt cam gear and bolt it on with my 01+ ecu and have the car run like nothing is wrong and no error codes?
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Old 03-05-2008, 06:04 PM   #5
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it's my understanding that it was also timing related and at about 6k it goes from max advantaged timing to stock timing in prep of redline, because of this you lose at lest 15% power. if that no true let me know but if you saying it only works on the intake cam could i just buy a 99 head w/ none vvt cam gear and bolt it on with my 01+ ecu and have the car run like nothing is wrong and no error codes?
dont bother doing all that. just unplug the VVT connector on the front of the cam cover.

the VVT is continuously variable all across the rev range. Great if you can control it, but not the end of the world if you can't.

At worst, you lose a few hp/tq in the midrange (3000-4500 off-boost) but we all know that doesn't really matter because with the cam at full retard (which it is when you unplug it), it makes better power above 5k allegedly.

I say run whatever you want and unplug that SOB.

edit: in fact if you remind me for the dyno day, I'll do a with/without pair of runs and show you all the difference.
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Old 03-05-2008, 06:11 PM   #6
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dont bother doing all that. just unplug the VVT connector on the front of the cam cover.
That puts up a check engine light=( was at the dyno yesterday, wish i would have known and i would have tried it.
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Old 03-05-2008, 06:15 PM   #7
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check engine lights mean very little on boosted miatas with engine management.
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Old 03-05-2008, 06:20 PM   #8
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check engine lights mean very little on boosted miatas with engine management.
o i was going to unplug it tonight as an NA and try it, if i unplug or lock it 1/2 way can i advance my timing as if it was a 90-99 to 12-14* and get more power out of it?
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Old 03-05-2008, 07:00 PM   #9
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I recommend the Hydra even if you don't tune the VVT. It made a world of difference between the emanage and the hydra on my 03'.
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Old 03-05-2008, 07:28 PM   #10
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Think i may install my stage 2 clutch/flywheel next month like i planned and then pick up a fm voodoo 2 kit sense it's the FM2 with out the hydra and buy the hydra in 6 or 8 months
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Old 03-05-2008, 11:02 PM   #11
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o i was going to unplug it tonight as an NA and try it, if i unplug or lock it 1/2 way can i advance my timing as if it was a 90-99 to 12-14* and get more power out of it?
cam timing is not the same as spark timing -- so, no.

plus you can't lock it half way.
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Old 03-05-2008, 11:07 PM   #12
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^I'm sorry... I think I remember reading that you needed to buy an adjustable cam gear to do that.
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Old 03-06-2008, 02:10 PM   #13
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The Xede can run on VVT cars. However it cannot control the VVT. You do not have to unplug it either.

Controlling that can yield about a 5%-7% power increase if you use a standalone ECU.
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Old 08-21-2009, 08:17 PM   #14
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And concur... excellent first post. Make this guys a mod.
never did get that mod =D.

edded up with a mp62 from tdr and a Adaptronic that i'm playing with now.

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Old 08-21-2009, 09:49 PM   #15
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We have a similar problem, I have a 2004 vvt 1.8 engine, I'm thinkin about how to resolve the VVT question to use a HKS bolt on kit.

FM gives you a normal pulley and the engine looses the VVT, that is not really a must for a turbo engine, in fact it gives more torque at low revs and turbo makes it better.

Leaving it unplugged should be Hi revs mod, but if we leave it work?

The stock ECU will command it as usual, could it be good?

what is in terms on retard/advance the two positions differences?

bye
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Old 08-21-2009, 10:16 PM   #16
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you can unplug it and get a cel light or un plug it, get a vvt controller off a blown motor (or something like that) plug that in and strap it down, vvt is off and no cel. we did this as a test to see if it worked but you car is considerably slower the accelerate and the top end felt the same. i was looking for a way to make vvt stay advanced at all revs or for at lest more revs. the new ecu looks like it will let me do this.
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Old 08-21-2009, 10:35 PM   #17
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the engine looses the VVT, that is not really a must for a turbo engine, in fact it gives more torque at low revs and turbo makes it better.
There are good reasons why Mazda removed the V.V.T. for the Mazdaspeed Miata.
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Old 08-25-2009, 10:46 AM   #18
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Originally Posted by evank View Post
There are good reasons why Mazda removed the V.V.T. for the Mazdaspeed Miata.
But they "only" achieved 170 flywheel hp...

Some say that using the VVT will improve torque at midrange revs...

Bye
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Old 08-25-2009, 10:49 AM   #19
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But they "only" achieved 170 flywheel hp...

Some say that using the VVT will improve torque at midrange revs...

Bye
VVT removal isn't the reason for low power.
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Old 08-25-2009, 10:53 AM   #20
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Jeff,
I ******* told you to sell that shitbox blue car and buy an NA. If you had an NA your **** would be finished by now, but you're in love with your gay dude headlights and steering rack so whatever.
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