2.5i - 170ch Tuning
BMW Z1 — Detailed power and torque gains by stage.
Gains by stage(4)
Power
170 hp
Torque
221 Nm
essence
Power
170→186ch
+16 ch
+9%
Torque
221→243Nm
+22 Nm
+10%
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Everything about 2.5i - 170ch tuning
Tuning the 2.5i - 170ch found in the BMW Z1 is one of the most popular performance upgrades. This engine offers excellent potential for power and torque gains.
On ChiptuneMAP, find verified gain data for each stage, compare tuner prices and find the ideal professional for your project.
Gains summary by stage
On the BMW Z1 2.5i - 170ch, tuning delivers up to +30 hp and +49 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 170 → 186 hp | 221 → 243 Nm | — |
| Stage 2 | 170 → 200 hp | 221 → 270 Nm | — |
| E85 Flexfuel | 170 → 170 hp | 221 → 221 Nm | — |
| E85+ | 170 → 186 hp | 221 → 243 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 2.5i - 170ch?
Tuning the 2.5i - 170ch (BMW Z1) delivers significant power and torque gains depending on the chosen stage. Stage 1, with no hardware modifications, offers the best gain-to-reliability ratio.
Is tuning reliable on the 2.5i - 170ch?
Yes, the 2.5i - 170ch is known for its reliability when tuned, especially at Stage 1. It's essential to use a certified tuner with maps tailored to your engine.
How much does BMW Z1 tuning cost?
Prices vary by stage and tuner. Check our directory to compare rates from professionals near you.
Should I get a tuning box or an ECU remap?
ECU remapping (modifying the engine control unit map) delivers better results and integration than a plug-in tuning box. It's customized for each engine.
How do I find a tuner for my BMW Z1?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.