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-   -   96 trying to keep it street legal. (https://www.miataturbo.net/ecus-tuning-54/96-trying-keep-street-legal-97618/)

Kronikmstrb8r 07-27-2018 03:44 PM

96 trying to keep it street legal.
 
I want to turbo it real bad, currently building the engine for boost. Is getting a stand alone Ecu like a hydra of megasquirt the only real way to go? If so I would have to go back to stock once a year for state inspection. What about the FM voodoo box? Haven't found too much data on it but from what I understand it's maybe good for the power I want to make. About 200hp. Thanks

huesmann 07-27-2018 04:41 PM

Was gonna suggest historic tags, but wow—upon research, NC requires such vehicles to be 1981 or older!

concealer404 07-27-2018 04:44 PM

Which sounds better to you? Choose one.

A) One weekend of sadness for 363 days of happiness

B) 364 days of sadness for 1 day of happiness

Kronikmstrb8r 07-27-2018 04:48 PM


Originally Posted by huesmann (Post 1493739)
Was gonna suggest historic tags, but wow—upon research, NC requires such vehicles to be 1981 or older!

yeah... kinda a predicament

Kronikmstrb8r 07-27-2018 04:50 PM


Originally Posted by concealer404 (Post 1493740)
Which sounds better to you? Choose one.

A) One weekend of sadness for 363 days of happiness

B) 364 days of sadness for 1 day of happiness

Option A sounds good.

concealer404 07-27-2018 04:57 PM

Smart man. Sounds like you'll make the right decision.

Protip: The right decision never involves Hydra, though.

Kronikmstrb8r 07-27-2018 05:12 PM


Originally Posted by concealer404 (Post 1493746)
Smart man. Sounds like you'll make the right decision.

Protip: The right decision never involves Hydra, though.

Okie, thanks for that tip.

Stealth97 07-27-2018 05:54 PM

I used to swap maf and ECU every year...

Kronikmstrb8r 07-27-2018 06:04 PM


Originally Posted by Stealth97 (Post 1493755)
I used to swap maf and ECU every year...

so you just make adjustments to not throw codes? What are the steps to make sure it passes?

Ted75zcar 07-27-2018 11:41 PM

FM sells CARB legal turbo for all miatas.

Stealth97 07-29-2018 08:34 PM


Originally Posted by Kronikmstrb8r (Post 1493756)
so you just make adjustments to not throw codes? What are the steps to make sure it passes?

leave all factory sensors. Just swap in ECU, set timing and drive. I kept stock injectors to make it simple.

x_25 07-30-2018 09:02 AM


Originally Posted by Ted75zcar (Post 1493794)
FM sells CARB legal turbo for all miatas.

Those use the voodoo box. Which isn't toooooo bad if you soend the time to dial it in. But then you need another thing to adjust timing... And then you are stuck with stock/only slightly larger injectors and... Yeah...

Having worked with both, I would just do megasquirt, then swap injectors abd MAF/AFM on before the turbo and tie the waste gate open for inspection. Or can get some 280cc EV14 injectors or something and a RRFPR to bump fueling (still tuning with MS) if you want to avoid swaping injectors.

achervig 08-01-2018 10:53 PM

OP I've got a Voodoo II box I'll sell you for cheap, PM if interested. I used it on my 96 with the FM kit for a couple years when I lived in TN and had to do emissions, and it worked great for what it is. I made 174whp on stock injectors and it was dead reliable. The problem for me came when I decided I needed more power. Don't think I could have gotten to 200 at the wheels on the Voodoo box.

vitamin j 08-02-2018 12:09 PM

Looking up NC regs looks like you have three options:

​​1. Change to stock ECU to do emissions test, can leave turbo in place just open wastegate and drive slowly.

2. Sell the 96 and get a 95 or older Miata which will not have to pass any OBD checks.

3. Come to Colorado and get emissions tested here and then use that certificate in NC. Looks like that is allowed see "out-of-state emissions testing in North Carolina" on the NC DMV webpage. In CO, OBD function is not required to pass.

Bell Tuning & Performance 08-03-2018 11:33 AM

You can also use the Xede on a 1996 and not have to swap parts. Injectors can stay in, but you may need to adjust the tune a little leaner at idle.

That said, most of my customers will swap the MSPNP and injectors to the stock ECU/Injectors/MAF and go pass emissions. Then swap it back.
Stephanie


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