Thread: 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) £1150.00+VAT

Exchange basis JBS05 (as long as the old unit is in useable condition) £850+VAT

JBS Tubular Collected manifold (not equal length) £450+VAT

Custom-Code Phase 3 mapping £550+VAT (reduced from £650)

Fitting of the manifold and turbo can be done for an extra £279.45+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

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

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)

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

where do I sign?

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

Mike