It’s Alive!

That right guys, the MX-5 is alive!

I received an SMS 1 hour before I finished work today, it was from Anth, ” the car is almost ready to go”, so excited the remaining hour felt like forever.

Anyway, 4 o’clock finally arrived, and I was out the door, and on the way to Dahtone Racing.

So, I haven’t seen the car in a few days, and I was pleasantly surprised to see how the progress went.

Anth said to me, “we’ll start the car tonight” my eyes literally glowed, the amount of excitement I had was unbelievable.

We had a few hiccups to before that perfect crank of the key, it started!, but was running in limp mode “Oh shit!” I thought, what could it be?

Turns out somethings going on with the Piggyback, it seems to respond on the reds, but when the engine is running it doesn’t respond. So for now we bypassed it to see how it ran … Perfect!

The sound emitted from the exhaust was amazing, it’s extremely loud, yet beautifully crisp thanks to that incredible RS*R muffler. The N power headers really beef up the tone of the car too.

Anthony wanted to make sure the gearbox wasn’t a “dud”, so he went through all the gears and it all went smoothly.

There are a few little bits and pieces left, which will all be completed tomorrow. I can’t wait!



This is how the engine bay currently looks, if I do end up getting the Bomex bumper, I will probably make a duct for the Flow Stack to the passenger side inlet.

Till Tomorrow guys!

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Jaycar Digital Fuel Adjuster installation

Well yesterday i had some time to work on the car. I had this DFA in the micra (long story) but i figured i didn’t want it to go to waste, so i decided that it would go in the MX-5.

Installation is pretty simple, the DFA runs off the AFM signal and manipulates it. Finding this wire proved to be a challenge, but we’ll get to that soon.

To start off, part of the cage, the passenger side sill, carpet and metal piece protecting the ECU all needed to be removed.


This gives you access to the ECU, and the wiring to it. Now the fun part … trying to find the right wire to feed the DFA from. I searched high and low for a suitable wiring diagram, which unfortunately i could not find, So I compromised with the NeoMiata wiring diagram found http://neomiata.com/garage/index.php.

Now, the information i got from the Neo Miata diagram was that the AFM signal wire is light green with a black stripe, this is correct however the other colours around this are all incorrect.

So out came the multi meter and we checked all the light green/black wires. It ended up being on the plug circled below.

Next up, I spliced the wire and attached the Jaycar DFA to it like so (Red wire is input, white wire is output).

Next I needed to find a suitable source of power and ground, the easiest to get to was the starter button, so that’s where I tapped both power and ground from.


Out came the soldering iron and we bonded to wires together. Then it was time to find a suitable place for the Jaycar DFA. At the beginning of the install, I thought about putting it next to the factory ECU, but then it’s not easily accessible, then I had a look behind the glove box, made a mount and presto … result below.

Perfect, doesn’t interfere with the glovebox, it’s not seen and it is easily assesable to “lock” the piggy back, and to insert/remove the cable for the hand controller.

Bits And Pieces On Standby …

Tomorrow, work commences on the MX-5, today I did some running around in getting some vital parts for the conversion.

I finally got my hands on this nice piece of kit, the ORC racing clutch/flywheel combo.

It’s a used piece that came out of Zi’s (the JDMYard) MX-5, the new owner wrote it off on at the Royal national park … but thats another story all together.


Plenty of meat left on it, and should hold up quite well, similar to the old clutch I had, it is also a 6 puck sprung setup.

Thinking long and hard about what gear knob I wanted, a mate of mine (Xhonda_boy) offered me his old one … which I adored I didn’t pass the opportunity to take it.

Its a bit battered, but it’s still good, it’s still good!


Trust Grex gear knob … it feels great, and offers a very smooth shift.

Still need to take this piece out of the Micra, a Jaycar DFA … I’ll be using this to lean out the fuel and hopefully gain a bit more power out of the MX-5.

And finally, I figured, we need to take of the headers to rip the gearbox out, and I have a new exhaust system, I might as well finish it off with some decent headers. Now the Npower headers aren’t ideal … they are like a OBXR/Raceland equivalent, but I am sure they will squeeze out that bit more power then my standard headers. Considering that the outlet Diameter is 2.5 inch, it matches the rest of my setup perfectly!


Still trying to track down a few more parts … I am currently after an NB tailshaft so if anyone has any idea where I could find one, holla at me.