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  1. #1
    Bradderz_1988's Avatar
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    Tech info needed fitting forge splitter on my 1.8TQS ??

    Have heard that when installing this bov you have to install the opposite way to the oem recirc valve ie bottom of split r to recirc and recirc to turbo pipe is this correct and how do I set the valve to suit my engine its completely factory at the mo running at 180bhp wel it was when it came of the line proberbly lost a few horses now as it's nearly 12 year old
    1999 Audi A4 1.8T Quattro Sport - Volcano Black

    Mods - Frankenturbo F4 Kit - THS Decat - Milltek - ECS Crank Pulley - 034 Snub + Bracket/Gbox Mounts - 1Z/S2 Clutch + Flywheel - 007p - ICM + EVAP Delete - S4 B6 345mm Brakes - 300mm Rear Brakes - Goodridge Hoses - LCR Splitter -S4 Bumbers + Skirts/Mouldings - OEM Xenons - Apikol Diff mounts - Polytek'd Rear Diff Mount
    To do - F21 Upgrade - 3" Maf/Saab red Injectors
    WANTED : Cheap 02/52 Passat 1.8T AWT Manual

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  3. #2
    Bradderz_1988's Avatar
    Dont replace it, Upgrade it !!

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    Any 1 ???
    1999 Audi A4 1.8T Quattro Sport - Volcano Black

    Mods - Frankenturbo F4 Kit - THS Decat - Milltek - ECS Crank Pulley - 034 Snub + Bracket/Gbox Mounts - 1Z/S2 Clutch + Flywheel - 007p - ICM + EVAP Delete - S4 B6 345mm Brakes - 300mm Rear Brakes - Goodridge Hoses - LCR Splitter -S4 Bumbers + Skirts/Mouldings - OEM Xenons - Apikol Diff mounts - Polytek'd Rear Diff Mount
    To do - F21 Upgrade - 3" Maf/Saab red Injectors
    WANTED : Cheap 02/52 Passat 1.8T AWT Manual

  4. #3
    "Stick a V8 in it!"

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    dont.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  5. #4
    Broken Byzan's Avatar
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    What kind of tech info do you want?

    My opinion is don't.

    The engine management doesn't like the things and even if you did fit it, i can guarantee you would be dissapointed with the quacking sound

  6. #5
    Bradderz_1988's Avatar
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    Quote Originally Posted by Byzan A4 View Post
    What kind of tech info do you want?

    My opinion is don't.

    The engine management doesn't like the things and even if you did fit it, i can guarantee you would be dissapointed with the quacking sound
    I would just like to no the best/correct way to fit the splitter ?? Do I just take off the oem Bosch recirc and put the forge valve in it's place ??
    1999 Audi A4 1.8T Quattro Sport - Volcano Black

    Mods - Frankenturbo F4 Kit - THS Decat - Milltek - ECS Crank Pulley - 034 Snub + Bracket/Gbox Mounts - 1Z/S2 Clutch + Flywheel - 007p - ICM + EVAP Delete - S4 B6 345mm Brakes - 300mm Rear Brakes - Goodridge Hoses - LCR Splitter -S4 Bumbers + Skirts/Mouldings - OEM Xenons - Apikol Diff mounts - Polytek'd Rear Diff Mount
    To do - F21 Upgrade - 3" Maf/Saab red Injectors
    WANTED : Cheap 02/52 Passat 1.8T AWT Manual

  7. #6
    Broken Byzan's Avatar
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    Yep, that's about the size of it.

  8. #7
    Oranoco's Avatar
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    I reversed it on my A4. Made more sense to me for the operation of the recirc valve

    Life begins at 140mph
    Sell my Audi??? Kiss my rings!
    www.passionford.com

  9. #8
    Bradderz_1988's Avatar
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    I reversed it on my A4. Made more sense to me for the operation of the recirc valve
    I think I got the jist of how it works f***ing VAG setup is baffling my head not used to these and also first turbo car I've had lol guna replace oem valve with plastic elbow then the simlar looking thing on intake is guna be removed and fit split r there coz it made more sense in the end for some strange reason maybe it was just me lol why not just be suited for t-piece and normal blow off instead of recirc valve, oh well hope I get it fitted some time soon off road at mo tax has ran out and me v5 ain't come and no new keeper slip so in the parents shogun sport till it arrives god it feels slow lol
    1999 Audi A4 1.8T Quattro Sport - Volcano Black

    Mods - Frankenturbo F4 Kit - THS Decat - Milltek - ECS Crank Pulley - 034 Snub + Bracket/Gbox Mounts - 1Z/S2 Clutch + Flywheel - 007p - ICM + EVAP Delete - S4 B6 345mm Brakes - 300mm Rear Brakes - Goodridge Hoses - LCR Splitter -S4 Bumbers + Skirts/Mouldings - OEM Xenons - Apikol Diff mounts - Polytek'd Rear Diff Mount
    To do - F21 Upgrade - 3" Maf/Saab red Injectors
    WANTED : Cheap 02/52 Passat 1.8T AWT Manual

  10. #9
    "Stick a V8 in it!"

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    Its done like that because the engine management system cannot cope with a blow off valve. Why would they design it to do something its not supposed to do?

    The MAF sensor measures the quantity of air thats entering the turbo, and uses that value to calculate how much fuel to inject. When you fit a BOV, including your splitter, every time it dumps a quantity of air thats already been measured by the MAF sensor gets dumped and never reaches the engine. The problem is the engine management system has no way of knowing this air is no longer present, and injects the fuel anyway.

    This has the result that every time the valve dumps (ie a gearchange or lifting off etc) you get a momentary rich mixture, which causes flat spots, stalling and generally crappy running. It can also affect the fuel trims which control the overall engines fuelling, as the ECU will try to compensate for the richness by backing off the fuelling.

    Simply fitting a cone filter with the OEM valve will give you a bit of a dump noise, but at the same time will keep the ECU perfectly happy.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  11. #10
    flat out

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    worth being careful with fitting a cone filter.
    i did and left it too close to the turbo and it melted the gauze.

  12. #11
    Oranoco's Avatar
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    Bigger issue with cone filters is the oil on them contaminating the MAF wire causing problems. I put up with it but clean the MAF sensor every couple of months to keep it running right

    Life begins at 140mph
    Sell my Audi??? Kiss my rings!
    www.passionford.com

  13. #12
    Bradderz_1988's Avatar
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    Quote Originally Posted by Oranoco View Post
    I reversed it on my A4. Made more sense to me for the operation of the recirc valve
    U got a picture of your valve installed ??
    1999 Audi A4 1.8T Quattro Sport - Volcano Black

    Mods - Frankenturbo F4 Kit - THS Decat - Milltek - ECS Crank Pulley - 034 Snub + Bracket/Gbox Mounts - 1Z/S2 Clutch + Flywheel - 007p - ICM + EVAP Delete - S4 B6 345mm Brakes - 300mm Rear Brakes - Goodridge Hoses - LCR Splitter -S4 Bumbers + Skirts/Mouldings - OEM Xenons - Apikol Diff mounts - Polytek'd Rear Diff Mount
    To do - F21 Upgrade - 3" Maf/Saab red Injectors
    WANTED : Cheap 02/52 Passat 1.8T AWT Manual

  14. #13
    Oranoco's Avatar
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    Not to hand, can try and get one for you but it's tighter than a nuns knickers in there

    Life begins at 140mph
    Sell my Audi??? Kiss my rings!
    www.passionford.com

 

 

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