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  1. Jostar

    stock internals?

    Save your money for an EMS, you will love it, my car drives like a dream, Then go single!!!
  2. Jostar

    stock internals?

    I run 14 psi on my twins daily, I crank it to 20 psi when i wanna have more fun! they haven't fail yet! My car made 322hp at 10 psi 365hp at 15 psi & 422hp at 20 psi, I do have a AEM ems though, my car was tuned by Sound performance in bloomingdale Illinois, so the twins aren't worthless as...