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    Lexus LS400 Shift Points

    I Have A 1992 Lexus LS400 With 102,500 Miles, And Sometimes Under Full Acceleration, It Randomly Decides To Shift At 5800 RPM Under Kickdown. This Is On Flat Land Mind You. Anybody Know Why?
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    Single Exhaust Piping After Stock Y Pipe For 1UZ

    Hello, first time user but does anyone know what size piping I should use for a single exhaust on a stock 1UZ? I know the general answer is 2.5 Inches but I want to keep the engine quiet. So I was thinking to get some OEM Mufflers to weld on but I know that could hurt airflow and power ratings...


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