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Bypassing the exhaust preheater...

Discussion in 'Gen 3 Prius Accessories and Modifications' started by Georgina Rudkus, May 30, 2023.

  1. Georgina Rudkus

    Georgina Rudkus Senior Member

    Joined:
    Sep 15, 2018
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    Location:
    Taylors, SC
    Vehicle:
    2012 Prius v wagon
    Model:
    Two
    Exploring YouTube, I encountered this video on how to bypass the exhaust preheater on the Lexus CT200h, which is an equivalent to the Gen 3 Prius and the Prius v. This would come in handy, if the exhaust preheater leaks or if it is damaged by a catalytic converter thief. It would be handy also for the Gen 4 commonly known for exhaust preheater leaks.



    The heater hose from the heater core basically is diverted to the exhaust preheater before it goes to the engine connected at the egr cooler.

    I found that Magnaflow now makes a non-California Gen 3 Prius complete with the resonator without the engine preheater,

    https://www.magnaflow.com/products/52453-magnaflow-2010-2015-toyota-prius-oem-grade-federal-epa-compliant-direct-fit-catalytic-converter

    I doubt that they will do the same for California, because the preheater is still needed for C.A.R.B. compliance.
     
    #1 Georgina Rudkus, May 30, 2023
    Last edited: May 30, 2023
    StarCaller likes this.
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