From the look of it, its been done a couple times before. In Ninja's post Nismo and Tomei were both well over 300hp, and I think someone in that thread mentioned another person. However, this is an awesome build. Now the trick is to start doing it cheaper and easier. I think that Nismo and Tomei showed that new heads were pretty important, so I think the secret to mid 300hp may just be heads and a compression bump. Not exactly something everyone would be wild about, but I like the idea and I'm sure there are others out there that do as well.
As far as stages, I'd say go with:
Stage 1 - Intake ($150), headers($??), cat deletes (optional) ($??), exhaust($1000), and UTEC ($800) or similar. Won't give much power here, but probably will later on (Probably $2-3000)
Stage 2 - New heads ($2500) and cams ($1500), now we're starting to see some power (About $4000)
Stage 3 - High compression 12:1-15:1 built engine/ stroked engine($???). No idea what this would be putting down, probably 350 like Nismo and Tomei, but a stroker might be a nice power adder too. (Price is gonna be pretty high here
Just my $0.02, but stages 1 and 2 aren't rediculous, granted a supercharger for the same price will put out higher figures, but thats going to be a pretty solid engine at least I'd think. Labor might be higher for thie route as setting up the heads probably isn't as common or easy as setting up a supercharger or single turbo. I also have no idea what the power band would look like on this.
2010 True Red Miata Sport
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