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Thread: RS4 Fuel Valve?

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    mjr901's Avatar
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    RS4 Fuel Valve?

    just wondering whether it's something worth doing for stage 2+? does it make a big difference? I've got everything I need for this stage but I've known people to run these uprated fuel valves aswell.

    Do people run others like R8 ones etc? or do I just stick to the original or indeed use the RS4 valve?
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    100% do it. Valve is £40 from Audi and takes an hour to fit.

    Recommended to me by Revo

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    mjr901's Avatar
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    is it just the RS4 one thats used?
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    Does this make the car use more fuel?

    Chris
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    mjr901's Avatar
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    Quote Originally Posted by loudchris53 View Post
    Does this make the car use more fuel?

    Chris
    I cant see it using less tbh so if it aids power i should think, yep, more fuel. but is it worth it.... guess ill just do it anyway!
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    lol, i suppose! bet it makes a big performance difference though

    Chris
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    it holds fuel pressure up, a worth upgrade for that money.
    i'm doing mine as soon as i get time..
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    Definately do it. Doesn't make a massive difference but gets rid of the known power dip at 5k rpm.
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    Has anyone got a guide to fit this? Looks like a right ***** of a job?
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    Just done some more research on this and 99% of people say its an arse of a job. best to let the garage do it for an hours labour.

    backdraft have done quite a few apparently.
    2012 Ibis Black Edition S-tronic S3, 3 Door, Shark Stage 2, MTC Intake Kit, Powerflex Fast Road Dogbone Mount, Full Non Res Milltek Exhaust, Forge Development Intercooler + DV system,
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    the part itself looks well easy just to screw in.

    i think it's access where people struggle.

    people have to bend spanners etc to do it, some even take off the manifold!
    2012 Ibis Black Edition S-tronic S3, 3 Door, Shark Stage 2, MTC Intake Kit, Powerflex Fast Road Dogbone Mount, Full Non Res Milltek Exhaust, Forge Development Intercooler + DV system,
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    Has anyone got a pic of a rs4 valve next to a standard s3 one ?

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    You won't be able to see the difference from memory. It's just the size of the nozzle on the inside. Bank on an hours labour to fit for someone that knows what they are doing.
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    they look identical its the cracking pressure thats different i think its something like 130 bar for standard and 136 bar for the RS4 one.


    I bent some spanners to save taking the manifold off
    8P S3

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    would a long socket get to it if you put the 90 degree angle piece you get in these halfords advanced sets?
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    Hi guys a bent spanner is the best way in ,ohh err misses..this is how statllers done mine..

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    Next will be....- HPFPupgrade Stage 2 kit (155bar hpfp + 155bar return valve). 10 times better than APR HPFP

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    Quote Originally Posted by s3kel View Post
    Next will be....- HPFPupgrade Stage 2 kit (155bar hpfp + 155bar return valve). 10 times better than APR HPFP
    tell me more...... linky?
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    Quote Originally Posted by s3ollie View Post

    they look identical its the cracking pressure thats different i think its something like 130 bar for standard and 136 bar for the RS4 one.


    I bent some spanners to save taking the manifold off
    You wanna lend them out mate?
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    Hi silky you not near statllers ask craig for a spare one..lol
    VAGOC.co.uk | VAGOC.co.uk link to stage 2 Hpfp
    S3 dan was using a revision autotech stage 2 Hpfp...

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    Is this more for an uprated S3 or will a remapped 2.0 TFSI benefit?

  23. #22
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    RS4 Fuel Valve?

    Quote Originally Posted by downtothebone View Post
    Is this more for an uprated S3 or will a remapped 2.0 TFSI benefit?
    Quite likely that until you get to 360ish bhp that it will make little difference but the best way is to log fuel rail pressures and see if there are any significant dips which would make the RS4 regulator worthwhile.

 

 

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