NC Miata with 2.5L base tune
Posted: February 15th, 2026, 3:41 pm
Hey Guys,
I recently bought a 2.5L 2006 NC Miata (otherwise bone stock) and went with Fab9's tune package with versatuner. I feel like the base tune file I got makes my car run slower and Bryan at Fab9 is impossible to get ahold of so I thought I'd tinker around with Versatuner.
My pretune AFR looked rich and now my Fab9 tune looks lean. It's basically running at around 14.7 all the time, even at WOT.
Anyone have a base 2.5L Miata tune I can use to start my tuning journey?
Jon
I recently bought a 2.5L 2006 NC Miata (otherwise bone stock) and went with Fab9's tune package with versatuner. I feel like the base tune file I got makes my car run slower and Bryan at Fab9 is impossible to get ahold of so I thought I'd tinker around with Versatuner.
My pretune AFR looked rich and now my Fab9 tune looks lean. It's basically running at around 14.7 all the time, even at WOT.
Anyone have a base 2.5L Miata tune I can use to start my tuning journey?
Jon