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  1. 05-24-2011 10:56 PM #1
    bmarshall
    bmarshall is offline
    Senior Member Two Rings
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    melbourne australia

    Larger throttle body for 1.8T BT.

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    Is there a direct fit larger throttle body for the AEB 1.8T? Or does it require an adapter?
    96 A4 1.8TQ
    FRANKEN TURBO K03-073, 1 BAR CHIP, SUPERTECH VALVES, PORT N POLISH, JE PISTONS, SCAT RODS, 034 MANIFOLD & FMIC, FIDANZA FW & SOUTHBEND STG 3, BILSTEIN & H&R, 3IN EXHAUST, CUSTOM AIR BOX, APR DV, DBA SLOTTED, RED STUFF.
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  2. 05-24-2011 11:05 PM #2
    V4VanGelder
    V4VanGelder is offline
    Active Member Two Rings V4VanGelder's Avatar
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    Oct 26 2008
    AZ Member #
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    My Garage
    SC 2.8 Passat;3076R 1.8 Passat
    Location
    Queens, NY

    they all require an adapter plate. bigger throttle body= larger mounting flange
    99 B5 Passat 2.8 Supercharged & Widebodied - UNDER CONSTRUCTION
    01 B5 Passat 1.8T GT3076R - Daily Driven @ 25psi

    motor work done by ME.
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  3. 05-25-2011 01:53 AM #3
    Oceanside
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    My Garage
    2001 A4
    Location
    St Pete FL

    pretty straight forward with the plate
    AWM BAT A4 / AGP D42 .48 / Tapp 630 / IE Rods / LwFw+ S4 SB / APR Stealth / Garrett-Precision 450 / 2001 FWD Highway Menace
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  4. 05-25-2011 05:02 AM #4
    gmx
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    Veteran Member Four Rings gmx's Avatar
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    Mar 01 2008
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    My Garage
    '12 1M
    Location
    Sydney, AU

    If you want to get the most of it, you should bore the IM opening to match.
    00 A4 1.8TQ MT (AJL)
    12 1M

    18*8 RPF1 | Vogtland GT 575F/675R | H-Sport Sways | 320mm B8 Brakes, 300mm S4 rear |
    GT2871R Elim | QMS tuned AJL 627cc EV14 @ 4.3bar | 034 3" DP (8psi backpressure!) | Milltek | JHM SSK
    3090lbs
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  5. 05-25-2011 08:22 AM #5
    M-Hood
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    Feb 08 2011
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    70665
    My Garage
    B5 A4 2 liter HTA3586r
    Location
    Phoenix, Arizona area

    Larger TB isn't really needed for FT power. Now if your looking to make over 450whp then maybe.
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  6. 05-25-2011 08:27 AM #6
    99blueb5
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    My Garage
    01 S4, 99 A4
    Location
    Bellevue, WA

    yeah there was a huge test on different TB and the power increase and such on a BAT setup, ill see if i can find it, but results for cars making under 300hp was very minimal like around 7-10whp, all need adapter plates i would also hone the inlet a little for a smoother transistion.
    99 A4 1.8TQM:
    APR Stage 3 GT28rs kit, CM FX400 6puck, 3" downpipe, Nuespeed catback,Nuespeed short shift, Cxracing fmic, Forge007 DV, H&R coilovers, APR snub mount, gasket ported head, VDO guages, e codes, 6k's, Fiberimages CF hood/trunk, A8 BBK, IE Rods

    00 B5 S4
    Vast stage 3, Rs4 airbox, ko4's,borla cat back, neuspeed sways, statis coils, jhm fmic, SSAC Dp's
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  7. 05-25-2011 09:43 AM #7
    ZimbutheMonkey
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    Mar 27 2010
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    solar system

    The other issue that you may run into is that you'll need to get your tune adjusted to run the new throttle body. Like Mike said, unless you're running a GT30 or larger it's probably not worth it for the gains.

    That said, I'm looking at your sig and about the only thing that you don't have is a GT or larger turbo. Any reason that you're still running the FT?
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