It puts the head on the block.

Awesome! Coils should be easy-peasy, both the NB1 & NB2 use wasted spark, do they not? TIA for updates!Oh, most definitely. More torquees with the rotrex will be:party:This is good news, I guess they just moved it from the front to the back? Too easy! I was stressing this after reading about it on m.net (probably my first mistake)

My situation is slightly different as I need to maintain my stock ecu for emissions compliance. Smog techs out here aren't going to know what all that stock looking VVT crap is on the engine. The VVTuner can easily be mounted up under the dash and the wiring should be the same with the stock ECU or with my DIYPNP, unless I've totally missed something. The rotrex, injectors, MS and COPs can be easily swapped for stock parts for my biennial emissions testing, but the head is a little more of a pain in the ass.

Ok so I'm switching my injector harness from my 2000 motor to my 2001 motor to install in my 2000 car.....get that?

I'm going to run the 2000 coil pack for the time being (just bought it for $250 from mazda). So whats this black thing on the back of the 2001 head?
https://www.miataturbo.net/attachmen...ine=1332699077

I will eventually be hooking up the4 VVT with the standalone kit for $200 so I want to know if this is needed???


Another question....are the injectors the same? They are different colors?
Thanks

Capacitor for RFI supression. Its not 100% needed, ECU won't even know.

Its gone.
Thanks!

So how about the injectors? They the same?

Or others searching this later..... the fitted plastic fuel line under the intake manifold is different too but the 2000 one will swap on as long as you loose the mounting thingie near the oil filter and make your own.

Injectors are different...

http://miataturbo.wikidot.com/fuel-injectors
99-00 (red) 260cc - #195500-3310
01-05 (purple) 265cc - #195500-4060

...But I honestly wouldn't worry about it at this point :party:

Are you going to try to fire it up with the stock 99/00 ECU? I'm seriously curious if this will work on a US spec car.

That was the plan...use stock ECU. Think that is a big enough difference in injector to matter?

According to Brain, its not 260cc vs 265cc...



Year Make/Model Engine Size/Color Part #
87-88 Toyota MR2 4AGE NA 213cc – Beige Top #23250-16080
89-91 B2220 Truck 224cc - Yellow Top? #23250-74040?
99-00 Mazda Miata 240cc - Thin Red Body #195500-4430
Toyota 4AGE 250cc – Green Top
Toyota 4AGE 250cc – Violet Top
94-97 Mazda Miata 265cc - Tan Top #195500-2180
01-06 Mazda Miata 265cc - Thin Lt. Prple #195500-4060
Toyota 3SGE 295cc – Green Top
89-92 Toyota Supra 7MGE NA 305cc – LT Green Top #23250-70080
93-95 Toyota Supra 3.0L 312cc - Maroon Top #23250-46030
Toyota 3SGE 315cc – Pink Top
90-92 MX6/626/Probe Turbo 326cc - Gray Top #195500-2150
89-91 B2600 Truck 326cc - Gray Top #195500-2150
Mazda 323 GTX TURBO 360cc - Black Top #195500-2130
Celica/MR2 3SGE NA 370cc - Green Top #23250-74160
Mazda RX8 420cc - Yellow Body #195500-4450
89-92 Mazda RX-7 NA 440cc - Blue Top #195500-5740
89-91 RX-7 NA 460cc - Red Top #195500-2010
89-91 RX-7 TURBO 550cc - purple top #195500-2020


Looks like I'll be pulling them out and swapping them tmw...yea

Honestly, I think the stock ECU can handle the variance. Don't people run Supra 305's with the stock ECU?

And just for the sake of argument, (lol) IIRC when WitchHunter cleaned and flowed my NB1 reds, they did 258cc across the board @ 3bar. I'll see if i can find the flowchart tonight.

Edit: Well, I just found this on the WitchHunter site
https://www.miataturbo.net/attachmen...ine=1332775346
So I guess that answers that.

If you are using the 99/00 ECU I'd use the 99/00 injectors, but that's just me. Are you going to use the 99/00 VICS intake or the 01/05 VTCS manifold? I've always wanted to run a VVT head with VICS + VVTuner. It seems like it would be the best of all worlds.

I had not considered using the 99-00 intake. Think there would be any benefit?

VTCS was for emissions compliance or some such, it blocks the runners. It looks like this:
https://www.miataturbo.net/attachmen...ine=1332780997

VICS actually had a performance benefit by changing the plenum volume. It looks like this:
https://www.miataturbo.net/attachmen...ine=1332780997

http://www.mazdaspeedy.com/2010/03/v...fold-pics.html
^^ Good info with diagrams and pics

http://forum.miata.net/vb/showthread.php?t=428283

Keith: VTCS holds no performance benefit at all. It's a restriction in the intake if anything. Think of it as a choke and you've pretty much got it figured out.

JasonC SBB: I have a VICS mani on a VVT head. The VICS setpoint adjustment behaves the same way as the 99 head - adds torque in the midrange, ideal switchover ~5600 RPM.

http://forum.miata.net/vb/showthread.php?t=301535
^^ That's Jason's question about the same. Good commentary here from MT bros.

https://www.miataturbo.net/megasquirt-18/standard-vics-vtcs-behaviour-52479/
^^ More commentary on the operation of the VTCS system.

You are already wired for VICS with the stock 99/00 ECU, its proven to add torque in the midrange, why not use it?

Moar torques = winning https://www.miataturbo.net/diy-turbo-discussion-14/dyno-effect-vics-99-00-turbo-20742/

I've got a complete VVT head in the garage and I've been giving some though to installing it, but I need to maintain my stock ECU for CA emissions. I seriously doubt a smog tech would notice all the VVT crap on top of the head, and the VVTuner could easily live under the dash. I'm SO in for win and awesome on this.

EDIT:

Just found this related post by Jason w/dyno results from a non-boosted FM 2.0 stroker: https://www.miataturbo.net/engine-performance-56/im-dyno-comparo-vics-vs-vtcs-vs-flat-top-eudm-62200/

FM looks like they did some pretty good comparison stuffs, but this is a turbo car: http://forum.miata.net/vb/showthread.php?t=453219

Here it is in all its glory a VVT + VICS 1.8L Wit new FM1 Clutch.


https://www.miataturbo.net/attachmen...ine=1332884120

It appears to be missing a car :giggle:

Glad you with for the VICS, can't wait for results on this!

My VVT head will probably visit the machine shop in a few weeks for a bit of a refresh and a skim. I don't have a 10:1 bottom end so I'm hoping to make up a little compression that way.

...and all the injector isolators are cracked so I'm waiting on them to come in. Prob put it in tmw. Everything fighting me on this simple swap.

Its always the small stuff that kicks your ass, keep the faith! :party:

Sweetness! Looks good.

I may have to research how to put a vics intake on and keep my ecu happy about the missing vtcs.

Just leave the VTCS solenoid plugged in and you won't throw a code.


I'm currently running with VICS and VVTS to the V. It's pretty sweet.

Its in and running well. Here is how to fit 99 coils to a 2001-05 motor. Simple.

https://www.miataturbo.net/attachmen...ine=1333180148

Time to order the VVTuner.

I was just talking with bryce yesterday about the 01 motor that he has in his car till the built one gets back. Now I am really interested. I'd love to pick your brain about what you did.


now I really want your block when you get the built motor back Bryce!!!