Audi RS4 B5 2.7 V6 BiTURBO

AUDI (8D) 1999-2001 ENGINE CODES – ASJ | AZR
STOCK POWER – 380PS STOCK TORQUE – 440NM
AUDI RS4 B5 2.7L V6 BITURBO being tuned on the dyno

The original B5 Audi RS 4 Avant quattro (Typ 8D) was introduced by Audi in late 1999 as the successor to the Porsche / Quattro GmbH joint venture-developed Audi RS2 Avant. Like its predecessor, the RS 4 was available only as an Avant.

The RS4 could accelerate from 0 to 100 km/h (62 mph) in 4.9 seconds, and achieve a maximum speed of 250 km/h (155 mph) (electronically restricted)

The engine was developed from the 2.7 litre 90° V6 ‘biturbo’ used in the B5 S4. The engine was developed and manufactured in the UK by Cosworth Technology. It featured aluminium alloy ALSi7Mg cylinder heads, cast by Cosworth, with enlarged intake ports and smaller exhaust ports, two parallel BorgWarner K04-series turbochargers, two larger side-mounted intercoolers, dished piston crowns, stronger connecting rods, larger intake ducting, an enlarged exhaust system, and a re-calibrated engine management system. The engine was controlled by a Bosch Motronic ME 7.1 electronic engine control unit, using a Bosch ‘E-Gas electronic drive by wire throttle. It had multipoint sequential fuel injection, a mass airflow sensor, and six individual ignition coils. The engine oil was cooled by oil to water and oil to air coolers.

STAGE 1 : +20-60PS +210-240nm

You should see around 400-440ps & 650-680nm

We would require a non refundable deposit of £150 to secure your booking and for your car to be with us for a couple of hours to carry out the work.

Please make sure your car arrives with at least half a tank of fuel and is always run on the best fuel either Tesco 99 Momentum or Shell Vpower

Please be aware that old coilpacks can fail when running more power, causing a misfire, please make sure you have newest revision coilpacks before booking in, or let us know and we can add these to the estimate and replace on the day.

Please make sure you check your MAF, DV’s, F hose, throttle body hose, EGT codes as these are the usual parts to fail/ have issues

Please make sure that you mention all work you’re wanting to be carried out before booking in so that we can schedule this into the diary accordingly.

Mentioning work when you drop your car off means that we will run into delays as it was not scheduled in the diary.

STAGE 2 : +100-120PS +260nm

You should see around 480-500ps & 700nm

We would require a non refundable deposit of £2,000 to secure parts and booking, and for your car to be dropped off and left with us for 2-4 working days to carry out the work.

Please make sure your car arrives with at least half a tank of fuel and is always run on the bets fuel, either Tesco 99 Momentum or Shell Vpower.

Please be aware that old coilpacks can fail when running more power, causing a misfire, please make sure you have newest revision coilpacks before booking in, or let us know and we can add these to the estimate and replace on the day.

Please make sure you check your MAF, DV’s, F hose, throttle body hose, EGT codes as these are the usual parts to fail/have issues

If your car is being left with us, please do not collect/ or plan to collect your car unless told so, we do not want to rush the work we are carrying out on your car, we will let you know as soon as your car is finished,w e have completed our final checks and we are happy with your car.

Please make sure that you mention all work you’re wanting to be carried out before booking in so that we can schedule this into the diary accordingly.

Mentioning work when you drop your car off means that we will run into delays as it was not scheduled in the diary.

STAGE 3 : +120-320PS +340-410nm

Based on turbo choice you could see from 500-700ps 780-850nm

Due to the age of this platform and limited parts availability any Stage 3 work would need to be discussed first.

MRC B5 RS4 STG3 TTE780 Dyno Plot

Frequently Asked Questions

Please check the below questions to see if it answers your query before ringing the office

Bookings

We require non refundable deposits for all bookings made, if you’re more than half an hour late, try to rearrange within 48 hours or do not show we will keep the deposit, if you are wanting to re book then another deposit will need to be taken.

We also ask that all invoices are paid by BACS before collection.

Engine related FAQ

All tuned Vehicles should be ran on Audi long-life 5W40 oil.

All 2.0L 2.5L and 4L engines should be ran on NGK race plugs once tuned.

Please let us know if service work needs to be added to your estimate

Service Intervals:

  • Oil and filter change once a year or every 10k
  • Major engine service every 2 years or every 20k
  • Transmission (gearbox, haldex, diffs, transfer box) should be done every 3-4 years, every 35k
    • Depending on how the car is driven, if the car is driven hard/ abused etc then these intervals should be cut in half.

Fuel

Please make sure your car arrives with at least half a tank of fuel and is always run on the best fuel, either Tesco 99 Momentum or Shell Vpower

Coilpacks

Please be aware that old coilpacks can fail when running more power, causing a misfire, please make sure you have newest revision coilpacks before booking in, or let us know and we can add these to the estimate and replace on the day.

Labour rates

Our standard labour rate is charged at £109+vat unlress the vehicle is tuned by ourselves and we are supplying and fitting all parts then it is discounted to £92.50+Vat

B5_2.7L Twin turbo Bi Turbo engine diagram