Hello everyone. A few days ago I purchased my first Miata NC. I love the car so far but it definitely needs some induction and exhaust noise.
I want to install a cold air intake WITHOUT a tune. I’m not looking for power, I want the CAI for the sound it makes and because it looks nice in the engine bay.
So the question is, will this decrease my mpg? Will it mess with the mass airflow sensor? Will it cause any problems?
Would love to hear about your experiences. Thanks!
Indeed an unusual request.
The NC has a CAI as standard and it’s a good one. Most tuners leave them in place unless they are fitting ITBs. BBR even use the original intake on their turbo conversions, it’s that good.The one I heard of that actually betters the original is the Skuzzle one but I don’t think that’s made anymore.
If all you’re after is a bit of noise in the cabin then the later models have the induction noise ported straight into the cabin. Lots of people take these off to make the engine quieter but I don’t see a reason you couldn’t retro fit one. It won’t help the under bonnet bling though. For that I would change the washer bottle and header tank for metal ones, that’ll bling it up a bit.
I have the Skuzzle intake on mine and it helps power after a remap, but you can’t hear any induction roar, is it’s in the grill…Still Available
They do indeed and I believe it was always made by Ramair even when Skuzzle was about. 
(As it was just down the road from where Skuzzle used to be).
IMHO (and with full disclosure I don’t own this) If you are after a performance upgrade don’t bother… you wont notice much (if anything)
I have a K&N filter with the OEM intake box. But I also have a BBR full exhaust system and remap that adds 27 bhp over the stock - If the question is does the K&N it provide any performance? My answer it maybe but it will be marginal compared to what the remap, the exhaust manifold, the high flow catalyst and the rest of the exhaust system.
If you want to hear induction noise, take the OEM filter off and fit a cone filter leave the mass flow sensor and the remaining of the induction system alone. Dont expect much in terms of performance upgrade.
Probably even slight (if maybe unnoticable) power decrease due to heat soak.
stock NC with a cone filter, a back box (and I believe 225 /45/r17 ps5) and rx8 callipers up front (cant remember whether he used the rx8 hub and disk as well.
Anyhow I don’t think James has had it even remapped and he was keeping up with a 911 GT3
(edit just remembered his original diff shat it self so he fitted a 4.1 ratio diff - so has slightly more acceleration and less top speed)
Sounds good doesn’t it?
dunno why you cant see it but its the Anglesey one
MX5 NC following 911 GT3 (992) on Anglesey GP - 19th Feb 2023
1:58 in
https://www.youtube.com/@jp__fox/videos
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