How can u even Compare a Single turbo VVti 2.5L 1JZ motor to a shitty Rb20 ??? 1 Has shitloads of torque and from such a low Rpm and the Other will make more Torque under water as a boat Anchor ! Ive driven plenty of Rb20's .... They Suck majorly ! Nothing under 3500rpm at all. And the 1JZ vvti is actually quite good on normal fuel from the factory anyways.
What type of Gas setup would you be using ? Gas Injection ? or Mixer ? Imo, i would drop the VVti 1JZ in and leave it on petrol. The Soarer guys reckon they get great fuel economy with those engines even in stock form.
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