99 miata 1.8l turbo kit
#3
The Miata aftermarket is going through some transitions at the moment, but within a few months, you should be able to buy an FM turbo, a BEGi turbo (possibly avail. now), a Racing Mazda turbo (you may be able to buy these already) and possibly a BRP turbo kit (several have them already, but they're currently not advertised on the site.
#4
Additional upgrades depend on power output. At 170 rwhp you'll probably need nothing on a 99 miata. After 170 rwhp, clutch and PP need to be upgraded. Over 200 rwhp, and you might need to upgrade the cooling system. Over 240 rwhp and a 99 car will most probably need internal engine upgrades. (Connecting rods seem to be the weak link on the 99-01 cars.) Also above 240 rwhp, the 5 speed tranmissions sometimes fail. Apparently, the 6 speed is a bit more durable, from what I've heard. Drive with mechanical empathy and the 5 speed should be fine.
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Andifer
Miata parts for sale/trade
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09-23-2015 05:43 PM