Chrysler 300C SRT8 6.4 Hemi V8 475hp Remap

Name: Chrysler 300C SRT8 6.4 Hemi V8 475hp ECU Remap
Brand: Chrysler

Expected gains of +20 BHP and +18 Nm torque

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BHP+20 hp (4%)

Standard

475 hp

Tuned

495 hp

Torque+18 Nm (3%)

Standard

637 Nm

Tuned

655 Nm

Suitability

Limited (3/10)

Gains Profile

Limited headroom

Headroom

Low

Chrysler 300C SRT8 6.4 Hemi V8 475hp ECU Remapping

Considering an ECU remap for your Chrysler 300C SRT8 6.4 Hemi V8 475hp? A Stage 1 remap can take this 2011 -> petrol engine from 475 BHP to 495 BHP and from 637 Nm to 655 Nm of torque (naturally aspirated). This engine scores 3/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Chrysler 300C can achieve.

How this engine compares

4thof 9 Chrysler 300C engines by power gain
14%of the 9,842 engines we hold gain data for see a smaller power increase
7%of engines with torque data see a smaller torque increase

Comparisons are calculated from our own recorded Stage 1 figures.

Assessment

The Chrysler 300C SRT8 6.4 Hemi V8 475hp is a 6.4L naturally aspirated petrol engine producing 475 BHP and 637 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 495 BHP and 655 Nm — a gain of around 20 BHP (4%) and 18 Nm (3%).

This engine has low remap suitability, though the available headroom is limited, so gains are modest compared to higher-output variants. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.

Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. High tuned torque: check transmission torque capacity and service history.

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.

Considerations

!Naturally aspirated engine: gains are usually limited; results vary widely.

!High tuned torque: check transmission torque capacity and service history.

Other 300C 2011 -> Engines

Engine	BHP	Gain	Torque	Gain	Score
3.6 V6 292hp	292 → 310	+18	350 → 370	+20	Moderate (4/10)
5.7 Hemi V8 363hp	363 → 385	+22	534 → 555	+21	Limited (3/10)

Technical Specifications

Fuel Type: Petrol
Aspiration: Naturally Aspirated
Displacement: 6.4L
Capacity: 6417 CC
Type: Car
Engine Family: Chrysler 6.4L V8 NA Petrol

ECU & Transmission

Likely ECU Low confidence: Petrol ECU (varies by market/year)
Gearbox Low confidence: Transmission varies by trim and market; check manual/automatic type and torque rating. At this torque level, transmission and driveline servicing history becomes especially important.

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Confirm Your Vehicle

MakeChrysler

Model300C

Generation2011 ->

EngineSRT8 6.4 Hemi V8 475hp

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.

We recommend discussing your specific vehicle with a qualified remap professional before proceeding.