I bought the Versatuner after installing the Roadstersport Street header on my NC. Due to a shipping error it took a little while to receive the cable, but once I got it the process was pretty simple. I was completely new to the idea of tuning, but the guys at Fab 9 were really helpful.
My butt dyno isn’t that well calibrated, but I think I do feel a little more oomph after this installation, particularly in the mid-range, like when hitting it to pass someone. The retune also bumped the rev limiter up from 7200 to 7500rpm. Overall a good result.

Definitely one of if not the best purchase I’ve made for my NC. Tested out the tune on a fully stock NC and the difference was night and day. The car just as many other reviews you’ve seen just feels so much for alive. Being the second owner I didn’t get to experience the very beginnings of my car but with only 46k on the clock the NC is just striving for more power which this tune gives. The customer service is also just outstanding. I was blown away with the responsiveness and especially just being able to answer my questions concisely and in an educating manner. 10/10 buy if you won’t regret it.

I called FAB9 with some questions about what I wanted out of my 07 Miata for the track. The customer service I received was sincerely second to none. Truly Excellent service. I purchased the versatuner based on that call and it is perfect for what I am doing with the car. My Miata is now fully awake. More power and faster response. I was not prepared for the sound to change. It sounds fantastic. I get regular compliments on how the car sounds now. Best way I can explain the engine performance now is that it is Eager. It Wants to rev and run hard. Asks for it.
Great product.

I installed the tune on my '06 NC1 GT 6MT with a GWR Street Catted header and GWR RSII back box and boy did it make a difference. there is a noticeable bump in torque at low and mid range RPMs and a slight but noticeable bump in power up top as well. Aside from the obvious throttle response and power improvements though, the car generally seems to run better. Smoother idle, faster throttle blips and less of tendency to buck at low speeds in traffic. It's a relatively small difference but certainly a welcome one not only for driveability but also for piece of mind, the whole car just feels better put together now.

I would recommend this tune to everyone who owns an NC Miata even as a stock daily driver, especially since the tune is so easy to install. The Versatune software is very professional looking and easy to use, I had no problems plugging my car into this piece of software after loading it up for the first time. I mention this because I suspect there are a lot of people new to tuning cars that would be afraid to use something like this, much like I was. Just load up the software and follow the very clear instructions, it's easy!

Fab9 support was also excellent. Bryan was absolutely on the ball getting the tune to me. It didn't even take half an hour after I sent my base map to Bryan for him to get the tune back to me. I was blown away especially since I sent the email to him at 4:00 on a Friday (sorry Bryan).

If you're on the fence about buying this, just do it. It's worth every penny of the $379 I spent and it will be for you too. Fab9 will have my business in the future especially if I go for a 2.5 swap.

This tune really shows its worth in 1st and 2nd. You now have torque. Brings a smile to my face chirping the tires. Throttle response is also greatly improved. While you won't notice much of a difference on the speedometer, overall drive-ability is greatly improved. Dollar for dollar, the best value in performance.

The torque comes in sooner, and pulls much better than stock. I like the higher rev limiter as well.

What absolutely blows me away is the much improved throttle response!!!

The increase in torque and horsepower is also clearly noticeable.

I would recommend installing a tune. Lowest cost and easiest to install performance gains that exists for the NC.

The tune is great, gained power across the rev band. Sounds great too. Had an issue with emails and recieving the tune but it was resolved right away after I gave them a call.

Crackle/pop fully stock NC EXP--
I purchased this kit for the crackle and pop, but because my vehicle is bolt on from the ground up, around 3rd gear i can hear a some what silent burble noise, but no pop noise so i will have to upgrade my exhaust for the noise its there just not noticeable from a couple feet away.

0-60 power EXP--
i instantly noticed the difference when i went from 1st to 2nd, the car throttle response feels a lot responsive, you can feel it in your stomach, the car was fun before but now man this is alot more action added.

Conclusion--
For fully stock cars the pop noise is there but barely can hear it, for the power is definitely there and you will be able to tell instantly, more over the program has prepared your car for future upgrades so you can now get the fullness out of them.

I must say that I had my expectations a little high going into this purchase. I got it back in November so I’ve had some time with it to really come to the conclusion that it was good. My NC is an auto that I keep in paddle mode almost always, stock headers, straight midpipe, racing beat exhaust. When I first tuned it I must say, throttle response is without a doubt better now. Power however feels relatively the same (can’t beat an 09 civic in a race still). Turning off decel made it burble in lower rpms but I lost the pops I used to have, when I would let off and tap the gas between 2-3k it would pop pretty loud. So in that area I was let down in hopes for more pops like the tuner says. With the automatic before the tune there is a limiter at 2k if your foot is on the brake, after the tune the limiter was gone and on a “closed road” it did an enjoyable burnout. Overall I am pleased with the pep of the car, it’s got the pep that the smile makes you think of. However, it doesn’t have the power to go with that pep. I’m considering getting stage 2 cams sold on this sight for it here soon after my headers too see how the quoted “217” whp will feel in the Miata. I definitely would recommend this for anyone putting power into their NC because you can get the full version of the software and be able to tune it yourself or have a pro that you like, near you, tune it.