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  1. #1
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    What do i need to do to get around 250bhp A3 1.8T AGU

    Im currently at around 200bhp and im wanting to try and get to around 250 mark which i think will be plenty on a fwd car with no LSD. What sort of figures am i looking at on a k03s. I would love to go hybrid but i just don't have the pennys

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  3. #2
    Odt

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    I'm interested in the answer to this one as I'm after similar from my agu, would love to have a nice sleeper
    1.8t Ming blue a3 sport

  4. #3
    MUSH's Avatar
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    You could settle for a little less at 230bhp ish and have an easy upgrade to the k03s. Although its the same (phical fitment) its a whole world better, pulls much stronger and breathes a lot better.

    Or for a bit more hassle and another step up you could go for a k04 conversion, even better and will net you 260-270 bhp. Its a bit more work but worth it in my opinion. I had a k04 converted 1.8t in my mk2 and it was rapid.

    You got the power bug Si? lol
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  5. #4
    jay1601's Avatar
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    good exhaust (with high flow/de-cat)
    silicone TIP
    K03S
    FMIC
    custom map

    should see 240bhp+

    i'm going for 250 in my AGU aswell
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  6. #5
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    Cheers lads. im not wanting to go lower than 250 realy so k04 conversion might be on the rise lol.

  7. #6
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    Quote Originally Posted by MUSH View Post
    You could settle for a little less at 230bhp ish and have an easy upgrade to the k03s. Although its the same (phical fitment) its a whole world better, pulls much stronger and breathes a lot better.

    Or for a bit more hassle and another step up you could go for a k04 conversion, even better and will net you 260-270 bhp. Its a bit more work but worth it in my opinion. I had a k04 converted 1.8t in my mk2 and it was rapid.

    You got the power bug Si? lol
    Lol nick well i sold my 200bhp punto for somthing a bit more family like but ive had enough of that lot now and wanting to sort some descent power out for inters next year, So you could say "ive got the bug back" lol

  8. #7
    MUSH's Avatar
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    Quote Originally Posted by AGU-TURBO View Post
    So you could say "ive got the bug back" lol
    Haha might aswell order that GT30 now then bud.....
    Audi S3 1.9 GT30....




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  9. #8
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    lol im not rich like you lot

  10. #9
    superkarl's Avatar
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    Ko3s only really gets to 235 reliably.
    Ko3 hybrid is prob 'easiest' I would have thought.

  11. #10
    MUSH's Avatar
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    Quote Originally Posted by AGU-TURBO View Post
    lol im not rich like you lot
    Its all a myth mate...
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  12. #11
    RIP S3dave

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    Quote Originally Posted by jay1601 View Post
    good exhaust (with high flow/de-cat)
    silicone TIP
    K03S
    FMIC
    custom map

    should see 240bhp+

    i'm going for 250 in my AGU aswell
    optomistic figures indeed.
    k03s wont manage that
    very few make past 230bhp
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  13. #12
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    so realy my best option is k04

  14. #13
    Dane's Avatar
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    I'd go k03 hybrid

  15. #14
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    I havn't got 800 od pound to spend on a turbo mate or i would

  16. #15
    Reverse Gear

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    what does k03 and k04 mean to an american audi owner? lol

  17. #16
    Prawn's Avatar
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    Have you actually been in a 230bhp a3?

    Before setting yourself a target power, I'd get a ride in a few cars first. You'll be surprised at how quick a 230bhp a3 is. It's quicker than a stage 1 s3 at 250bhp or so.....

    What's your reason behind wanting 250bhp? I hate to say it, but if you can't afford to buy a hybrid, then a stage 2 ko3s is your only option!
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    Prawns TFSI Turbo'd 1.8T Track Car

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  18. #17
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    Quote Originally Posted by Prawn View Post
    Have you actually been in a 230bhp a3?

    Before setting yourself a target power, I'd get a ride in a few cars first. You'll be surprised at how quick a 230bhp a3 is. It's quicker than a stage 1 s3 at 250bhp or so.....

    What's your reason behind wanting 250bhp? I hate to say it, but if you can't afford to buy a hybrid, then a stage 2 ko3s is your only option!
    Yeh ive been in plenty around those figures well not a3's but golf's. im power hungry mate lol just don't have the dosh to fuel it properly. i think im going to go k04 now.

  19. #18
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    So here is my shopping list. have i missed anything?

    k04 turbo,
    s3/tt manifold
    custom down pipe
    oil & water feed & return
    s3/tt injectors
    s3/tt fuel rail
    4 FPR
    s3/tt TIP

  20. #19
    Prawn's Avatar
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    Your list is way off :P

    You don't need an S3 fuel rail at all.

    You can't use S3 injectors as they're a different fitment on the AGU sadly. You'll need something like Genesis 380's from USRT (google it)

    You don't need a 4 bar FPR, it can be mapped perfectly on a stock 3 bar, and will put less loading on your fuel pump.

    If you're done high mileage your pump will struggle, so you'll need an S3 fuel pump. Easiest solution is an LCR pump as it'll drop straight into your tank.

    S3 boost hoses will be of no use to you at all. if you're on a stock SMIC that'll need replacing with an FMIC, and you can't fit the S3 twin cooler setup, as the inlet manifold is facing the wrong way on the AGU setup, so you'll need to get an FMIC sorted, or if you've already got one, mount the ko4, then work out what you'll need to plumb it into your existing FMIC pipes.

    You also need a 3'' maf housing, although the S3 one will mount the sensor at 90 degrees to the airflow using the AGU sensor, so what you need is a mk3 golf VR6 MAF housing

    Then a decent custom map
    Also, probably worth noting that an S3 downpipe splits into 2 parts for the twin Cats on an S3, so even if you get the S3 twin cats, you'll need a way of mounting the 'Slip joint' A3 cat back to the flanged S3 cats. Easiest solution here is an LCR 3'' downpipe / decat, although I think that's still flanged and would need modifying.

    Good luck!
    -------------------------------------------------------------------------------------------------

    Prawns TFSI Turbo'd 1.8T Track Car

    But I know nothing so ignore me.

  21. #20
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    ok cheers mate what i meant by boost hoses don't no why i put that but what i meant was turbo inlet pipe (tip). i also thought that i needed a 4bar fpr and i think the housing different between the 3bar and 4 bar i could be wrong though. So anyway ive been thinking, My best bet is to get the k04 setup on and then have a custom down pipe and exhaust made. Intercooler side i have a large fmic which i will make the piping up for to go round to the k04. I also have a walbro 255 fuel pump which should be ok for the job

  22. #21
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    are the k04 turbo's the same on the corsa/astra vxr as the s3/tt

  23. #22
    MUSH's Avatar
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    You can fit the S3 injectors, you just need to change your injector seats in your manifold. Theyre only plastic screw in inserts so are a 5 min job. Ive done this before.

    Yep 3 bar fpr is do able, even better if youve got a walbro.

    The neatest option is to use the S3/TT inlet/boost pipe, youd need a transition gasket or port the inlet runners to match the head.

    Pretty sure ive got a few vr maf tubes kicking around if you need one Si.

    Best bet is to source everything together, otherwise if you buy seperately the costs go through the roof. K04 conversions pop up on the forums/egay quite regularly.

    Biggest pain would be the downpipe/exhaust but aftermarket lcr or conversion pipes are available
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  24. #23
    AGU-TURBO's Avatar
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    Cheers nick yeh i think you'r right about holding off for a while and try a source everything together. i had the inserts out when i powder coated the manifold, they were only penny's from audi so if i can just change the seats for s3 one's and use them the s3 injectors thats the way ill go then.

  25. #24
    MUSH's Avatar
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    Si theres a k04 kit on e38 now in the exhaust section, might be worth a look?
    Audi S3 1.9 GT30....




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  26. #25
    A3tell's Avatar
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    might be a good idea to upgrade your rods too!! you dont want to do all that work and have a rod be thrown out the side of your block!!

  27. #26
    Prawn's Avatar
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    depends how much labour he can do himself really, New rods cost more than a new AGU block
    -------------------------------------------------------------------------------------------------

    Prawns TFSI Turbo'd 1.8T Track Car

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  28. #27
    MUSH's Avatar
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    Certainly wouldnt consider rods for a k04 conversion. With a decent map, theyre simply not required.
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  29. #28
    Prawn's Avatar
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    You say that.....

    Welly bent a rod with just a revo stage 1 map and an FMIC.

    Several other people have bent rods on stage 1 and 2 KO4 setups.

    a ko4 on an AGU is always going to be 'stage 2' spec, due to the way it's custom mapped.

    a ko4 at 26psi, spooling at 3500rpm producing 270 bhp but 320lbft, will put a lot more stress on an engine than say a GT28, spooling at 4k rpm but peaking 22psi, and making 330bhp/300lbft.....
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  30. #29
    "Stick a V8 in it!"

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    If your on a budget, get some SAAB Red injectors, they're 345cc or so and will drop streight into an AGU fuel rail.

    Minimal effort that way, and the injectors are usually available on ebay for not much money.

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  31. #30
    "Stick a V8 in it!"

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    Also, i've noticed Frankenturbo comes with a downpipe elbow that mates the K04 up to a standard K03 downpipe. Might be worth looking at having the elbow made, and keeping you existing K03 exhaust parts (assuming ofcourse you currently have upgraded downpipe/exhaust)

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  32. #31
    MUSH's Avatar
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    Quote Originally Posted by Prawn View Post
    You say that.....

    Welly bent a rod with just a revo stage 1 map and an FMIC.

    Several other people have bent rods on stage 1 and 2 KO4 setups.

    a ko4 on an AGU is always going to be 'stage 2' spec, due to the way it's custom mapped.

    a ko4 at 26psi, spooling at 3500rpm producing 270 bhp but 320lbft, will put a lot more stress on an engine than say a GT28, spooling at 4k rpm but peaking 22psi, and making 330bhp/300lbft.....
    To be fair though bud getting 320lb/ft from a k04 setup is a bit optimistic. My k04 was creaping on them levels but again were at the stage were mapping is crucial. Every s1/s2 k04 setup ive heard of thats went pop has had either generic/bad maps. They are safe, and can be pushed hard.

    My k04 1.8t was custom mapped from a reputable bloke who knows his stuff, and thats what i think was essential to the health of my setup.
    Audi S3 1.9 GT30....




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  33. #32
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    Cheers lads some great info there,
    Im not changing the rods as you can pick a block up cheap enough,
    Thanks nick i will email the lad now. Regarding injestors Andrew@A.L.D is sorting me his s3 one's out so that's 1 thing off the list lol

  34. #33
    Inertiauk's Avatar
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    AGU - I will have S3 injectors for sale soon from my APY, I will also have a broken K04, I dont know how badly until my mechanic gets started on my Hybrid upgrade, but it may be worth getting rebuilt.

    /edit, just spotted you sorted the injectors, what did you give for them please? (so I can price mine to sell them)
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  35. #34
    AGU-TURBO's Avatar
    Audi a3 1.8t AGU

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    Quote Originally Posted by Inertiauk View Post
    AGU - I will have S3 injectors for sale soon from my APY, I will also have a broken K04, I dont know how badly until my mechanic gets started on my Hybrid upgrade, but it may be worth getting rebuilt.

    /edit, just spotted you sorted the injectors, what did you give for them please? (so I can price mine to sell them)
    PM Sent..........

    Let me no about the k04 as i might be interested. Cheers Sy

  36. #35
    Inertiauk's Avatar
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    Quote Originally Posted by AGU-TURBO View Post
    PM Sent..........

    Let me no about the k04 as i might be interested. Cheers Sy
    Will do.
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