Infiniti FX (S51) 2009> 3.7 V6 315bhp remap figures
Thinking of remapping a Infiniti FX 3.7 V6 315bhp? The standard car makes 315bhp and 361Nm; with a Stage 1 remap from our Leicester workshop we expect around 335bhp and 383Nm, up to +20bhp and +22Nm.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 315 bhp | 335 bhp | +20 bhp |
| Torque | 361 Nm | 383 Nm | +22 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 315 bhp | 361 Nm | |
| Stage 1Maximum software-only performance | 335 bhp | 383 Nm | +20 bhp +22 Nm |
| Stage 1 EcoPerformance with economy in mind | 330 bhp | 381 Nm | +15 bhp +20 Nm |
| Eco mapEconomy first | 328 bhp | 380 Nm | +13 bhp +19 Nm |
Who is the Stage 1 map for?
- Drivers who want a sharper throttle and a small, honest gain from software alone.
- Owners who would rather keep the car standard in every other way.
- Anyone who wants the fullest software-only map for this engine, accepting that the gain is modest without a turbocharger.
What this means for your FX
Without a turbocharger the improvement comes from ignition, fuelling and throttle mapping rather than boost, so expect a smaller but still noticeable change in response.
Engine management is by a Hitachi MEC107-400 unit. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the Infiniti FX 3.7 V6 315bhp?
We expect 335bhp and 383Nm against 315bhp and 361Nm as standard: up to +20bhp and +22Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the Infiniti FX 3.7 V6 315bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 330bhp and 381Nm expected. The Eco map is economy first: 328bhp and 380Nm. Both still sit above the standard 315bhp and 361Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
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