Considering an ECU remap for your BMW Z1 2.5i 170hp? A Stage 1 remap can take this All petrol engine from 170 BHP to 185 BHP and from 222 Nm to 240 Nm of torque (naturally aspirated). This engine scores 4/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW Z1 can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The BMW Z1 2.5i 170hp is a 2.5L naturally aspirated petrol engine producing 170 BHP and 222 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 185 BHP and 240 Nm — a gain of around 15 BHP (9%) and 18 Nm (8%).
This engine has limited remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
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All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
