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APR Stage II Software for the B8 A4/A5 & Q5 Released!
Posted by: Arin@APR (2668) on 2010-07-21 15:43:29 | Advertiser

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APR is soon to release 2 All New B8 A4 Full Exhaust RSC Systems and 2
RSC Catbacks as well as a Downpipe for the 2.0T as found in the B8 A4.
The new RSC exhaust systems are another new application of Reflective
Sound Cancellation Technology which offers a straight through exhaust
design with no drone. By utilizing a straight though design, APR is able
to maximize power gains when coupled with APR's Stage 2 ECU Upgrade
without uncomfortable levels of exhaust drone while cruising.

During our development we discovered the exhaust systems flowed so well
modifications to the software were absolutely required when using the
new RSC systems. Spool time was significantly decreased and would result
in a rather large overshoot of requested load levels which would cause
the throttle to close. This can only be eliminated by properly
recalibrating the engine software to match the hardware changes and
APR's Stage 2 ECU Upgrade is born.

The benefits of APR's Stage 2 ECU Upgrade with APR's RSC Dual Exit Full
Exhaust System are as follows:

1. Turbocharger Boost Onset Reduced by Over 400 rpm's!

2. Peak Torque is Increased by Over 100 lb ft when Compared to Stock
Exhaust and Programming and by Over 70 lb ft when Compared to APR's
Stage 1 ECU Upgrade and Stock Exhaust!

3. Peak Horsepower is Increased by Over 50hp when Compared to Stock
Exhaust and Programming and by 29hp when Compared to APR's Stage 1
ECU Upgrade and Stock Exhaust!

We tested both our Dual Exit and Single Exit RSC Exhaust Systems and
found the Dual Exit RSC System to deliver slightly more horsepower in
the higher rpm's as expected.

Now for the numbers as measured by APR!

Stock - 212 HP & 260 TQ

Stage 1 91 Octane - 229 HP & 323 TQ
Stage 2 91 Octane - 239 HP & 353 TQ

Stage 1 93 Octane - 234 HP & 333 TQ
Stage 2 93 Octane - 242 HP & 362 TQ

Stage 1 100 Octane - 268 HP & 338 TQ
Stage 1 100 Octane - 270 HP & 380 TQ


The most impressive aspect of APR's Stage 1 and 2 ECU Upgrades are the
gains they make over stock at different RPM's:


Stage 1 91 Octane - 35 HP @ 5500 RPM & 64 TQ @ 2250 RPM
Stage 2 91 Octane - 43 HP @ 2650 RPM & 86 TQ @ 2650 RPM

Stage 1 93 Octane - 40 HP @ 5500 RPM & 74 TQ @ 2250 RPM
Stage 2 93 Octane - 46 HP @ 2550 RPM & 95 TQ @ 2550 RPM

Stage 1 100 Octane - 62 HP @ 5500 RPM & 78 TQ @ 2500 RPM
Stage 2 100 Octane - 64 HP @ 5550 RPM & 114 TQ @ 2650 RPM


And now for the dyno graphs for 91, 93 & 100.










As I mentioned earlier the dual exit system actually edged out above the
single exit system up top just a bit.





And for the sake of comparison, he's stage 1 vs stage 2:





APR Stage II Software is available now for many ECU's and we are adding
new ECU's daily.

Check this thread for ECU availability!

Programs:
Stock
Stage 2+ 91 Octane V1.0
Stage 2+ 93 Octane V1.0
Stage 2+ 100 Octane V1.0
Valet

Options:
FCE/TBA
Security
Anti-Theft

2010 Codes:
North American 8K2907115AA S0001 Stage2+ V1.0 Testpipes Ready
North American 8K2907115AA S0003 Stage2+ V1.0 Testpipes Ready
North American 8K2907115AA S0005 Stage2+ V1.0 Testpipes Ready

Non 2010 Codes
North American 8K2907115D S0002 Ready
North American 8K2907115M S0001 Ready
North American 8K2907115N S0001 Ready

Euro:
ROW 8K2907115J S0003 & 4 Not Ready
ROW 8K2907115P S0002, 5, 7 & 8 Not Ready
ROW 8K2907115Q S0003, 4 & 6 Not Ready
ROW 8R0907115A S0002, 6 Not Ready
ROW 8R0907115D S0002 Not Ready


APR's Stage 2 ECU Upgrade is a free update for existing APR Stage 1 ECU
Upgrade Owners!

APR Dealer Locator

Go APR
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