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  1. #1
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    which injectors?

    hi i have a 96 a41.8t aeb with a amd remap cat bypass samco hoses and milltech exaust pushing 201bhp i just aquired a ko4 15 and was wondering what size fuel injectors would be needed to get the most out of this unit?
    and will the ecu need remapping and would you recomend amd now that they have moved to big boys toys any help would be greatly appeciated thanks.mike

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  3. #2
    robbie5's Avatar
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    If you're adding a new turbo you'll need your car remapped, not sure about injectors – Siena would know that answer.

    Take your car to MRC they're the dogs B***ox. www.mrctuning.co.uk
    S4 AVANT(325BHP & 370lb/ft)
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    RS4 (standard at the moment)

  4. #3
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    I didnt think we needed injectors with the K04-15 as we have a 4 bar FRP fitted

  5. #4
    macca's Avatar
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    i thought we had 3bar? i'm probably wrong,. best way is to get a custom map with the work done, you are probably just within the limit of the stock injectors. they will be able to tell you when mapping the car if the injector pule lengths are too long and require a greater flow. you maybe able to get away with an adjustable fuel pressure regulator and up the pressure slightly more.
    1998 A4 1.8T Sport - For Saturdays
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    Mods- Forge Dump Valve, The Engine Shop Power Plus based Engine (Low Comp. Forged pistons, Arrow H-Section Rods, Newman fast road cams, polished & ported head), 19" wheels, B&M Short Shifter, Greddy Turbo Timer, RS4 Grill, Weitec GTN coilovers, HKS modified air filter, Autobahn88 FMIC, ChippedUK custom map. Some Turbo mods ongoing.

  6. #5
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    Mine is deffo a 4 bar, look on the side it will say.Its the VW family that seem to get the 3 bar???

  7. #6
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    cheers boys looks like mrc are way to go then

  8. #7
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    Quote Originally Posted by mike1234
    cheers boys looks like mrc are way to go then
    Doug is your man he's the owner
    S4 AVANT(325BHP & 370lb/ft)
    MRC remap > Miltek Cat Back > 19" split rims > RS4 grill > RS4 silver rails > Silver mirrors > Full Cream leather Recaros > B6 steering wheel > RS4 gear knob > Eibach springs > K&N filter

    RS4 (standard at the moment)

  9. #8
    jcb
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    go with 440cc injectors, but to be honest the map you get will determine the FPR or injector size.
    Custom or not, they are based on prescribed compnents.

    I would always go for bigger injectors than a higher rated FPR though

 

 

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