| $400 or so. You can get the Zemulator for $600 from Ash. The AFC is not the best way to tune a car. The Zem lets you manipulate the fuel and timing maps seperately. The AFC manipulates fuel and the ECU changes the timing automatically. You don't actually have any way to manipulate timing. Skip the HKS valves and get injectors instead. You don't need the valves unless you get huge turbos. Decide how much power you want and get the appropriate size injectors. You say Ultimate Z downpipes and cat pipes, go with the original, Specialty Z downpipes and cat pipes. They are much higher quality. That is all I feel like typing right now.

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