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.

Nice first post.

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.

:rly:

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.

That puts up a check engine light=( was at the dyno yesterday, wish i would have known and i would have tried it.

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?

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'.

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

cam timing is not the same as spark timing -- so, no.

plus you can't lock it half way.

^I'm sorry... I think I remember reading that you needed to buy an adjustable cam gear to do that.

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.
Stephanie

never did get that mod =D.

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

http://img154.imageshack.us/img154/1159/necroyj5.gif

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

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.

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

VVT removal isn't the reason for low power.
http://www.teaminfra.com/files/3/gif...cafuckyeah.jpg

Jeff,
I fucking told you to sell that shitbox blue car and buy an NA. If you had an NA your shit would be finished by now, but you're in love with your gay dude headlights and steering rack so whatever.

A couple of things:

- the VVT cam has a different profile from other Miata intake cams. Much shorter duration. Locking it at a particular point will not be the same as using a 1999-00 cam.

- there are definite gains to be had from controlling the VVT, especially in spool. Why didn't Mazda use it on the MSM? Who knows. Could be that it was simply too much work to get the ECU certified for emissions on such a short-run model.

/thread revival

im researching alot before i post, i thought this thread would answer my question, close but no
first off is anyone CURRENTLY running or HAVE ran a VVT engine w/ Piggyback setup? [xede, voodoo box, etc]
i have a few questions and am lost
all i want is 200whp
Atlanta= low altitude and 93octane FTMFW!
i hear much more than 200hp on piggyback will result in BOOM??
i still don't fully understand VVT or engines for that matter
but i don't want BOOM, nor be close to it, nor want to buy an FM2, nor Hydra, and pass emissions!
*this is NOT a DD or race car
just occasionally for fucking with douchebags in mustangs and various ricers on the freeway

you can run more than 200 rwhp on an 01+ and not go boom. just dont abuse it. I'm running about 250 rwhp. and have been for a while. I dont drag the car and I dont go nuts. Stick to 7 or 8 psi on something like a 2860 with a conservative tune and it'll be fine for a long time.

My stock ecu does the VVT in my piggyback setup.

but there's no reason you can't have the adaptronic do it. I believe Prospero just got his setup to work right.

or unplug the VVT and leave it at full retard. you'll lose some low end but it'll work great at high rpm.

Jeff tracks his car hard, there is no "don't abuse it" in the equation.

i was thinking Xede,
guess I need to read the adaptronic thread

^^

Hi,

i just turbo'ed my 2004 vvt (cam) 1.8.
I noticed that the pressure rise up a lot above 5-5500 rpm.

When i was testing i thought having regulated at 6 psi because until 4500 rpm it was stable, but approaching 5500 rpm it went up to 12 psi!!!

Now i regulated it best for maximum 6 psi until 7000 rpm and is good (non intercooled yet) and from 2500-3000 rpm you get 5-6 psi continuous until rev limiter

Hope this can help a bit.

Obviously is with vvt activated.

bye

i have no clue what in the hell you just said

My kit uses a piggyback called f con mini. The kit is from HKS produced for 1.8 engine. Actually i have approx 180 hp but with intercooler and 8 si boost i coluld reach 200hp...

I have many, many, cars running in excess of 250 whp on stock motors, with an Xede. Some daily drivers, some DDs with autocross use. Some track cars. My car (when not testing other stuff) runs 11-12 psi and 240-250 whp. It is a daily driver. You can easily do 200 whp+ on a piggyback or Interceptor style tuning device. That said, you must tune it properly and have good AFR's under boost. As long as you have GOOD fuel and timing control, 250 whp is easy as pie.

With a piggyback or Interceptor style tuning device, the stock ECU still controls the VVT.
Stephanie

thank you ma'am, guess I'll be picking up a turbo kit and xede when my tax refunds come in 2010! sweet

My 99 will rape you at hallett :giggle:

ran 211whp @ 10psi for 1.5 years with powercards running richer then i would like, ragged on it hard in every gear. tracked it 10 times and never had a problem tell i decided the car was to nice to gut so i got a ugly car to gut and part swap and got the right year this time.

What did you pick up?

base 99 with torson

That's a contradiction

so who is going to the dyno next? what is the verdict? unplug or plug? i know y8s said unplug.

Having VVT and not controlling it is a shame.

The AEM, Hydra, and Adaptronic can control it.

as can the stock ECU with a little help. I'm not even sure it requires the AFM to function properly.

no the contradiction was when i called mazda for a ven check and they told me it was a base with everything on the le other then leather and bose.