Chrysler 300c 2006-2010 6.1 SRT-8 425bhp Stage 1 Eco remap figures
The Stage 1 Eco map for the Chrysler 300c 6.1 SRT-8 425bhp (2006-2010): 459bhp and 624Nm expected from a standard 425bhp and 569Nm, up to +34bhp and +55Nm. It keeps most of the Stage 1 gain (Stage 1 is 470bhp and 629Nm) and is tuned with economy in mind: the choice if you want the performance and care what each tank costs.
Choose your map
Stage 1 Eco remap figures
Stage 1 Eco is performance with economy in mind. It keeps most of the Stage 1 gain, so the car still pulls well, but the map is shaped for efficient, relaxed driving rather than flat-out output. It is above the standard figures. We don't quote mpg, because economy depends on the car and how it is driven.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 425 bhp | 459 bhp | +34 bhp |
| Torque | 569 Nm | 624 Nm | +55 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 425 bhp | 569 Nm | |
| Stage 1Maximum software-only performance | 470 bhp | 629 Nm | +45 bhp +60 Nm |
| Stage 1 EcoPerformance with economy in mind | 459 bhp | 624 Nm | +34 bhp +55 Nm |
| Eco mapEconomy first | 455 bhp | 621 Nm | +30 bhp +52 Nm |
Who is the Stage 1 Eco map for?
- Naturally aspirated owners who want a little more response and a more efficient, relaxed drive. Every map we list stays above standard.
- Drivers who want the small gain on offer without chasing peak output.
- Anyone who would otherwise take the full Stage 1 map but wants it tuned with economy in mind.
How Stage 1 Eco compares with Stage 1
Full Stage 1 on this Chrysler 300c is expected to give 470bhp and 629Nm (+45bhp, +60Nm). The Stage 1 Eco keeps about 76% of that power gain and 92% of the torque gain, so you get 459bhp and 624Nm: 11bhp less and 5Nm less than Stage 1, with the map shaped for efficient, relaxed driving, so it suits you if you want the pull and care about running costs. Both sit above the standard 425bhp and 569Nm.
What this means for your 300c
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.
This car is listed with a Motorola NCG5 engine control 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 Eco questions
How much power does the Stage 1 Eco map give the Chrysler 300c 6.1 SRT-8 425bhp?
We expect 459bhp and 624Nm against 425bhp and 569Nm as standard: up to +34bhp and +55Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
How does Stage 1 Eco differ from Stage 1 on this engine?
Full Stage 1 is expected to give 470bhp and 629Nm. Stage 1 Eco gives 11bhp less and 5Nm less, in exchange for a map shaped with economy in mind. It still sits above the standard figures.
Is Stage 1 Eco or the Eco map better for me?
Choose Stage 1 Eco if you want the performance (459bhp and 624Nm) and still care about running costs. Choose the Eco map (455bhp and 621Nm) if economy matters more than pace.
Will the Stage 1 Eco map save fuel?
It is tuned with economy in mind while keeping most of the Stage 1 performance. We do not quote mpg figures, because economy depends on the car, its condition and how it is driven.
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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All petrol 300c variants · 300c 2005-2010 overview · All Chrysler figures