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Disconected n75 valve

Discussion in 'A3/S3 Forum (8L Chassis)' started by matt blowen, Jul 29, 2013.

  1. matt blowen
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    matt blowen Member

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    [Jul 29, 2013]
    Hi i have disconected my n75 valve just to see if there was much differance in boost! I didnt notice any change would this mean theres something wrong with actuator or n75? No faults found on vcds. When engine is cold and i tap the throttle the revs sit just under 2000rpm could this be linked in anyway? Cheers
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jul 29, 2013]
    Assuming you have electrically disconnected the N75 then there will be at least one fault code (N75 open circuit)

    Do you have a boost gauge? if so, what boost are you seeing? what model/year of car is it?

    What makes you think you have a problem that you need to disconnect the N75 in the first place?

    <tuffty/>
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  4. matt blowen
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    matt blowen Member

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    [Jul 29, 2013]
    Yes i just unplugged the n75, havent fitted a boost gauge yet, its v reg 1.8t seems ro rub **** when cold, idleing up n down and seems slow
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  5. Scullies
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    Scullies Well-Known Member

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    [Jul 29, 2013]
    Scanned for faults after unplugging N75?
    tried unplugging the MAF?
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  6. Prawn
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    Prawn My other car is a MINI!!!!

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    [Jul 29, 2013]
    N75 disconnected on a stock 150bhp car won't really make any noticeable difference. Stock boost is barely above actuator pressure.
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  7. matt blowen
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    matt blowen Member

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    [Jul 29, 2013]
    when I disconnect the maf it runs smoother, I had the n75 fault code because I had unplugged it, plugged it back in then cleared all codes. should I try and clean the maf to impove my poor idle?
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  8. Vex182
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    Vex182 Guess what I drive...

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    [Jul 29, 2013]
    Give the MAF a clean but be prepared to replace it, need doing from time to time to get the best from the car.
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  9. matt blowen
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    matt blowen Member

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    [Jul 29, 2013]
    ok ill give a clean is there anything else i should clean while im at like the tb?
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