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BMW E30 325i STAGE 1 ECU CHIP C27 E34 525i 325is 325iX

BMW E30 325i STAGE 1 ECU CHIP C27 E34 525i 325is 325iX
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Our Price:  £49.99(Inc. 20% VAT)Earn 49 Loyalty Points

Brand:  Turbonoz


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Stage 1 upgrade ECU chip for the BMW E30 325i & E34 525i fitted with the 2.5L 6cyl 12V M20B25 engine and 173 Bosch Motronic ECU

Suitable for the following vehicles:

  • 1987-1991 E30 325i / 325is / 325iX
  • 1987-1990 E34 525i
  • Bosch Motronic ECU Part Number: 0 261 200 173

This ECU upgrade chip features uprated fuel & timing maps and an increased rev limit in order to produce an additional 8-10bhp & 8-12lb/ft from an otherwise standard M20B25 engine.


  • Uprated fuel & timing maps
  • Increased rev limit to 6500 RPM
  • Suitable for standard & modified vehicles, as well as 2.7 & 2.8 engine conversions
  • Includes chip socket for safe installation in your ECU and to allow for future upgrades

It is ideal for completely standard unmodified vehicles, and will also work well with the following modifications:

  • Free flow air filter
  • Free flow exhaust
  • Super unleaded fuel (97 RON or higher)
  • Camshaft upgrade
  • 2.7 & 2.8 engine conversions

Please note that the above modifications are NOT required for this chip to work, they are simply recommendations for even further power gains to be made.

ECU Chip-Fitting Service Available - Please Contact For Details