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Thread: regal phase 3.5

  
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    GSI-ANDY's Avatar
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    regal phase 3.5

    i'm planning on getting the full regal phase 3.5 and just wondering would i still be able to my standard cat or would i have to upgade to a sports cat? cheers andy

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    Jonesy's Avatar
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    as far as I know mate, you don't *have* to in the fact that you cant have phase 3.5, but they recommend you do to get optimum power from that map.
    Regal Phase 3.5,VXR Turbo,VXR AFM,VXR Injectors,Courtenay FMIC,Dbilias Flowmaster,Regal Precat,Miltek exhaust,Lightened Flywheel,Uprated Clutch,Denso Plugs,Veccy Pipe,Eibachs,308mm Discs

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    Still using OE cat on mine and was told it's not worth changing it
    Astra Gsi Turbo... With a few choice mods

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    i also have standard cat on
    drivin hard! an smellin clutch!

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    You could if you wish keep the standard exhaust, but the thing to remember is that turbos thrive off having no back pressure, unlike N/A engines, so any restriction (cat, small bore standard exhaust) will mean either the turbo will have too work harder to achieve the given level or simply won't be able too.

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    GSI-ANDY's Avatar
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    what kind of bhp are you both running with the standard cats on?

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    Quote Originally Posted by GSI-ANDY View Post
    what kind of bhp are you both running with the standard cats on?
    290 Bhp at the mo
    Astra Gsi Turbo... With a few choice mods

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    You have both cats on yours bally?

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    Quote Originally Posted by mattcoupturbo View Post
    You have both cats on yours bally?
    No matt only main cat.
    Astra Gsi Turbo... With a few choice mods

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    Was going to say how the hell you managed that power with front cat on.

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