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1991-1993 BMW M5 E34 +38HP Xtreme EPROM Performance Chip


STAGE 3 Xtreme EPROM PERFORMANCE RACE CHIP Designed for the 1991-1993 BMW M5 E34 CHIP TUNING   Stage 3 Xtreme... read more




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2 reviews




Designed for the 1991-1993 BMW M5 E34



Stage 3 Xtreme Chip – Engineered specifically for Your Vehicle

This chip unleashes more power by re-programming the fuel mixture and timing parameters
of the engine management system. The rev-limit is lifted, giving your vehicle a broader power band.

Also Works with the 1990 M5 if it has the Stock Bosch Chip with code 1.267.356.412

Works with ECU code models:

Horsepower Gain:+38 HP
Torque:+36 Lbs/Ft
Raised rev limiter:7500 RPM
Top speed limiter removed

Requires Premium Octane Fuel

Compatible with both Manual and Automatic transmissions

Unlock your engine’s hidden potential! Typical gains include:

  • Faster Acceleration / 0-60 Times
  • Up to 3+ mpg increase
  • 38+ Horsepower increase
  • Better throttle response
  • Installs in minutes
  • Up to 35% added torque
  • Reduced emissions
  • Better 1/4 mile times
  • Prolongs engine life
  • Smoother idle
  • Better towing power & improved passing ability

Includes everything needed to install

  • 1  Stage 3 Xtreme EPROM Module, Custom programmed for YOUR vehicle
  • 1  Instruction / Install Sheet
  • 1  Antistatic Chip Case

Frequently Asked Questions


Do I need any special tools or automotive knowledge to install?

  • No! the Xtreme Chip  is 100% plug and play.
  • It is tuned for your specific vehicle make and model.
  • Beware of for cheap $10-50 mega horsepower products. They are fake and are a plastic box with a .10 cent resistor.


Does this product work with automatic and manual transmissions?

Yes – Both.


Does this product work with 2WD or 4WD

It works on both types if your car has options


Will this product void my warranty?

  • No it will not void your warranty, many dealers frown on performance upgrades.
  • However, the manufacturer cannot void your warranty for adding aftermarket parts.


How much horsepower will I gain?

  • Results vary depending on vehicle condition, fuel grade used, etc., but will be around 38+HP.
  • The chip  recalibrates the ignition and fuel based on the variables such as the fuel octane,
  • ambient air temp and other sensors in addition to driving style.


Can this harm my engine or vehicle electronics?

  • No. Our products have been dyno tested and proven to work with no negative effects on the vehicle.
  • We guarantee this!


How does this product work?

  • It plugs into your ECU module, replacing the stock chip. The chip modifies signals sent to
  • your vehicle’s ECU computer. It optimizes functions such as ignition timing, air fuel mixture, fuel maps
  • and produces more power and better gas mileage. The ECU of modern vehicles controls many variables
  • which ensure the best engine performance. It does this by reading values from a multitude of sensors
  • within the engine bay, interpreting the data using multidimensional performance maps (tables), and adjusting
  • the engine accordingly. It does this in real-time.

Additional information

3 oz

Reviews (2)

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  • My friends thought I added nitrous, what a boost! I now take the lead when we race – they want to look under the hood now!!

  • NICE mod – very satisfied