Ummm...they do not have pre-packaged tunes, but they can do dyno tunes easily which is where you will see real world gains (both Cobb & Uprev). The Nismo tune is not anything special from what we have seen yet, so they increased the rev limiter and threw on a slightly better exhaust system. The tune probably just opens up the system a bit more which any tune from Uprev/Cobb will do with ease.
The need for them to send anything off because it is a Nismo is completely unnecessary, the engines are the exact same, once you actually dig into a real tune there is no difference. They both support the same exhaust systems, HFC, headers, etc.
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