Infiniti EX 3.7 V6 320 hp — Stage 1 file (+10 hp)

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Chip tuning for Infiniti EX 3.7 V6 320 hp ECU

Infiniti EX (2008) 3.7 V6 320 hp — premium petrol engine of the passenger segment of the Renault-Nissan-Mitsubishi Alliance group (Япония, 1933). Stage 1 chip tuning raises power from 320 to 330 hp (+10 hp, +3%) and torque from 362 to 380 Nm (+18 Nm). ECU — Hitachi BEDxxx/MECxxx. Flashing method: OBD or Bench depending on the unit's protection. The 2008 generation — old-era petrol ECUs (ME7/ME9/MED9/Simos) with easily readable memory.

Infiniti shares platforms and engines with Nissan's premium segment. Infiniti is part of the Renault-Nissan-Mitsubishi Alliance via Nissan. Infiniti is Nissan's premium sub-brand, launched in 1989 for North America. Nismo is Nissan's performance division, the equivalent of AMG/M. The GT-R is Nissan's flagship supercar with a BiTurbo V6. Nissan's petrol range covers mainstream turbocharged and naturally aspirated engines.

The Nissan community in the JDM segment is the world's largest for the GT-R. The GT-R community is an industry of its own with ready-made Stage files. High-output Nissan models deliver a solid gain with Stage 1.

Frequently asked questions

How much horsepower does Stage 1 add for the Infiniti EX 3.7 V6 320 hp?

The Stage 1 gain for the Infiniti EX 3.7 V6 320 hp is 10 hp (+3%) over the stock 320 hp, for a total of 330 hp. Torque rises from 362 to 380 Nm (+18 Nm).

What is Stage 1 chip tuning for the Infiniti EX?

Stage 1 on the Infiniti EX 3.7 V6 320 hp is a software ECU calibration with no hardware changes. The key maps (boost/ignition/lambda/torque) are adjusted while factory tolerances are preserved. The gain is +10 hp with no hardware changes.

What does Stage 1 give on the powerful Infiniti EX 3.7 V6 320 hp?

The high-output Infiniti EX 3.7 V6 320 hp has a conservative factory calibration aimed at the mass market. Stage 1 unlocks the engine's real potential while turbo and injector life are preserved.

How does Stage 2 differ from Stage 1 on the Infiniti EX 3.7 V6 320 hp?

Stage 2 on the Infiniti EX 3.7 V6 320 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.

What control unit does the Infiniti EX 3.7 V6 320 hp run?

The control unit of the Infiniti EX 3.7 V6 320 hp is the Hitachi BEDxxx/MECxxx. Before flashing, the engineer identifies the exact revision and selects the write method.

Does Stage 1 void the warranty on the Infiniti EX?

Stage 1 on the Infiniti EX voids the factory warranty on the engine and transmission — this is standard for all manufacturers. CHIPOK provides its own warranty on the quality of the remap.

How quickly is chip tuning of the Infiniti EX 3.7 V6 320 hp done?

The full remap cycle for the Infiniti EX — from reading to writing the final file — takes 30-90 minutes depending on the ECU access method. The file is prepared at CHIPOK in 5-30 minutes.

Can you return to stock after Stage 1 on the Infiniti EX?

The original Infiniti EX ECU is always saved before flashing. Rolling back to the factory firmware is done with the same programmer in 25-30 minutes.

How much does Stage 1 cost for the Infiniti EX 3.7 V6 320 hp?

The cost of Stage 1 for the Infiniti EX 3.7 V6 320 hp is calculated in the calculator on this page — you select the options (DPF off, EGR off, AdBlue off, DTC off, etc.) and the price is capped by the package Max Price. Payment is by credits (1 cr = 1 €), with no subscriptions.

Last updated: 31.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno