Monster MotorsportChris Nott
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  1. #1
    JBS Alec
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    JBS 05 Stage One and Stage One Plus Results Are In.

    Here we have a 2001 Audi S3 approximately 50,000 miles with the following modifications:

    Green Cotton Panel Filter
    Forge TIP
    Milltek Cat-Back System
    Custom-Code Phase One

    Every other component is standard.



    The car has now been fitted with the hybrid JBS 05 turbo, 4 bar fuel pressure regulator and Custom-Code Phase Three.

    Please note standard downpipe, cats, manifold and intercoolers!

    For the stage one, we decided to run a maximum boost of 1.8bar spike, tailing to a constant 1.4bar to the redline. Please see VAG COM log below.

    Engine Speed Load Cmd Pressure Press @ Intercool
    TIME
    STAMP /min % mbar mbar
    24.64 1920 106.8 1840 1330
    24.95 1920 109 1860 1340
    25.24 1960 111.3 1870 1350
    25.55 2000 112.8 1900 1370
    25.85 2040 115.8 1950 1390
    26.16 2080 118.8 1990 1420
    26.45 2120 121.8 2020 1440
    26.76 2160 125.6 2040 1470
    27.06 2200 130.1 2040 1490
    27.37 2280 134.6 2060 1550
    27.67 2360 141.4 2080 1610
    27.97 2440 149.6 2100 1680
    28.26 2520 160.2 2130 1780
    28.57 2600 175.2 2150 1930
    28.87 2720 191.7 2160 2110
    29.18 2840 191.7 2180 2350
    29.48 3040 191.7 2220 2540
    29.78 3280 191.7 2290 2540
    30.07 3440 191.7 2380 2540
    30.38 3720 191.7 2390 2540
    30.69 3960 191.7 2400 2540
    30.99 4240 191.7 2390 2540
    31.29 4440 191.7 2390 2540
    31.59 4680 191.7 2380 2540
    31.89 4880 191.7 2360 2540
    32.19 5040 191.7 2370 2510
    32.49 5240 191.7 2360 2460
    32.8 5400 191.7 2380 2480
    33.1 5520 191.7 2390 2460
    33.4 5680 191.7 2410 2440
    33.7 5800 191.7 2400 2420
    34 5920 191.7 2330 2440
    34.31 6000 191.7 2290 2390
    34.61 6080 191.7 2240 2380
    34.91 6200 191.7 2210 2470
    35.21 6280 184.2 2170 2500
    35.52 6360 181.2 2150 2450
    35.82 6440 171.4 2110 2540
    36.12 6520 166.2 2100 2510
    36.42 6560 151.1 2080 2420

    As you can see, the turbo is quite capable of holding over 1.4bar at the redline and is fully controlled via the N75 valve. The offset you see between actual and requested is due to the 10psi wastegate actuator. A few tricks were needed in the Custom-Code Phase Three mapping to achieve this. We fuelled it at around 0.79 on spike tailing to 0.81 at redline. Maximum EGT recorded was 700˚C, this means no glowing manifolds or turbine housings!

    The results speak for themselves.



    As you can see from the dyno and logs, we now have near factory spool and a massive increase in both BHP and torque. Not to mention up to 1.5bar at 6.5k plus.

    We then decided to see just how far we could push this turbo on the standard manifold, downpipe and cats. The limiting factor became a combination of these three components. We managed to hold just over 1.5bar at 7k with a maximum EGT of 850˚C which is as high as we would ever want to go, but just shows what is possible. We were also very near to total saturation of the MAF element at 240g/s. We also increased ignition timing by approximately 8˚ below spool which can be clearly seen on the dyno graph in the form of extra torque low down.

    Please see the dyno graph below.



    We firmly believe that with just a high flow down pipe and de-cat a totally reliable 300-310BHP as well as 330-340lb ft is readily available. With the addition of our JBS Tubular Collected High Flow Manifold, up to 340BHP and 360lb ft will be on tap. We have now officially put this turbo into production and we are taking orders on our first batch of 10 as of now.

    Specification and prices below.

    Modified compressor housing inlet
    C.N.C re-profiled compressor cover for high flow
    350bhp capable “billet” custom compressor wheel
    Modified seal plate
    360 degree performance thrust bearing
    Hybrid K04 large trim left hand thread turbine wheel
    Lightening and balancing of turbine wheel for faster ‘spool up’
    Modified turbine housing
    Up-rated twin turbine seals
    Cryogenically treated components
    10psi wategate actuator set up with the option to upgrade

    BRAND NEW JBS05 turbo unit (not exchange) Ł1150.00+VAT

    Exchange basis JBS05 (as long as the old unit is in useable condition) Ł850+VAT

    JBS Tubular Collected manifold (not equal length) Ł450+VAT

    Custom-Code Phase 3 mapping Ł550+VAT (reduced from Ł650)

    Fitting of the manifold and turbo can be done for an extra Ł279.45+VAT - This includes labour, gaskets, oil, oil filter and coolant.

    Customers who already have a Custom-Code remap will receive a 33% discount on their phase three price. The JBS 05 hardware and software package is also available from Custom-Code agents.

    Many thanks for all the interest in the development of this product.

    Regards,

    The JBS Auto Designs Team

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  3. #2
    Aky
    Aky's Avatar
    Aky

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    Very tempting. Maybe after christmas when I've had chance to save some pennies for a FMIC and exhaust.

  4. #3
    jcb
    6th Gear

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    that looks like a 300bhp conversion for £3.5k +/- a few pennies.

    think I would be more comfortable with a GT2871 running 300 well within its capabilities with scope for higher flow than a K0x hybrid with restricted flow at higher revs.

    not meaning to be negative it just seems a lot for the turbo alone when GT28xx and IHI VF34's are both well under a grand (inc VAT)

  5. #4
    JBS Alec
    Guest
    Fair point but this hybrid is well capable of the outputs it is being tuned to. Plus this will go straight in between a stock manifold and down pipe. No messing about

    Alec

  6. #5
    voorhees's Avatar
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    where do I sign?

  7. #6
    JBS Sales's Avatar
    2nd Gear

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    Give me a call on 01246 455005 and lets get it sorted :D

    Mike


    Tel/Fax 01246 455 005

 

 

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