350 (3.5i) - 258ch Tuning
Mercedes Viano — Detailed power and torque gains by stage.
Gains by stage(4)
Power
258 hp
Torque
340 Nm
essence
Power
258→280ch
+22 ch
+9%
Torque
340→370Nm
+30 Nm
+9%
OriginalTuned
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Everything about 350 (3.5i) - 258ch tuning
Tuning the 350 (3.5i) - 258ch found in the Mercedes Viano 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 Mercedes Viano 350 (3.5i) - 258ch, tuning delivers up to +52 hp and +70 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 258 → 280 hp | 340 → 370 Nm | — |
| Stage 2 | 258 → 310 hp | 340 → 410 Nm | — |
| E85 Flexfuel | 258 → 258 hp | 340 → 340 Nm | — |
| E85+ | 258 → 280 hp | 340 → 370 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 350 (3.5i) - 258ch?
Tuning the 350 (3.5i) - 258ch (Mercedes Viano) 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 350 (3.5i) - 258ch?
Yes, the 350 (3.5i) - 258ch 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 Mercedes Viano 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 Mercedes Viano?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.