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The MR2 redtops single vvti have a return style system. Like many carsN so its checked like normal.
Only the Altezza/Blacktop/Dual VVTI is a returnless system where fuel psi is controlled by the ecu varying voltage to the fuel pump (iirc). So you just check pressure as the guage reads, no vac hose to remove or block off.
Andrew
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