Audi RS2 550hp+, nitrous boost, VEMS motronic55, on Ethanol

This is a friend's car that is currently stock and will start upgrading for 550hp+

Just before start upgrading the engine we will install a VEMS motronic55.

Engine upgrade

Engine code: ADU 003151
- Forged pistons (Iapel)
- Forged Scat Rods
- Stage III head modifications
  - enlarged and polished intake and exhaust runners
  - reshaped valve guide bosses
  - upgraded valve train (spring, inox spring retainers and valves)
- Reworked camshafts
- Adjustable Camshaft Sprocket (will start tuning with +6 exhaust for quicker turbo spool)
- 9.3:1 compression ratio (original I guess)
  - actual compression is around 8.8:1 if measured
- Oil cooler: Earls 42500
TurboCharger
- Garrett ballbearing GT 3076 A/R 0.82
- Dahlback Racing exhaust manifold
- Intercooler: HKS from a Toyota Supra
- 3" aluminum intake
- original wastegate
- 4" Downpipe
Ignition
- standard Audi RS2 coils
  - most likely so old that they will fail. 034motorsport coils are good upgrade (Kalske)
Fuel: Ethanol only
Fuel Delivery
- 5 Bosch injectors
- 2 Bosch fuel pumps at 3.0 bar (can handle 16 bar each)
Nitrous system
- First stage: +75hp to help turbine spool from 3000rpm to 5500rpm
- Second stage: +150hp

revs up to 8.000rpm and cutting at 8.300rpm
- ? Is the stock trigger system with VEMS capable for such high revs?Anyone with experience? //pnanassy
  - Haven't had any problem so far with such revs (Kalske)
550 to 600hp (+150hp from nitrous system)
- I would say that if cam timing is right you will very close to these figures even without nitrous. I got 475hp with GT2871R from same engine (Kalske)

It will be the PlugAndPlayMotronic (VEMS motronic55)

Can I have iButton security with VEMS motronic55? I don't see "1-wire interface" like in GenBoard/VerThree as an option when ordering.

And what about: