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  1. Capt.gt4

    Should i buy g4+ for my st205?

    Hi. Have a 1994 gt4 celica. 24 year old sensors, ecu, etc...Would the g4+ plug in be a good choice? Mostly stock. Would like more power obviously. Do i need to replace knock sensor, replace narrow with wide band? And will the link still run the wta intercooler? Thanks. Any suggestions grateful for.