Chrysler 300cc 5.7 V8 340
ECU Tuning in Midwales
Chrysler 300cc 5.7 V8 340 in Midwales. Standard and remapped figures for this exact engine.

- Fully dyno tested remaps
- 30 day money back guarantee
- Lifetime software warranty
- UK-wide local network
Remap stats
Chrysler 300cc 5.7 V8 340: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+27 bhp · +8%- Standard340 bhp
- Remapped367 bhp
Torque
+253 Nm · +90%- Standard282 Nm
- Remapped535 Nm
Tuning figures are indicative estimates, not guaranteed results. Actual results depend on the condition of the vehicle.
Prices from £130
Fully dyno tested | 30 day money back guarantee | Lifetime software warranty
ECU tuning for the Chrysler 300cc 5.7 V8 340 in Midwales takes it from 340 to 367 bhp and from 282 to 535 Nm in our stage 1 figures: +27 bhp (8%) and +253 Nm (90%).
The figures above are estimates for a standard, well-maintained Chrysler 300cc petrol; they are not a guarantee of any particular result.
Chrysler 300cc 5.7 V8 340 remap figures
- Fuel: Petrol
- Standard power: 340 bhp, remapped: 367 bhp (+27 bhp, +8%)
- Standard torque: 282 Nm, remapped: 535 Nm (+253 Nm, +90%)
- Service: stage 1 ECU remap, fully dyno tested
What a remap does for a petrol Chrysler 300cc
On a petrol car the ECU controls fuelling, spark timing and any turbo boost. A remap re-calibrates those maps within safe limits, so the car responds more eagerly and pulls harder through the rev range.
Book engine remapping for your Chrysler 300cc in Midwales
Remap Experts Midwales is part of the UK-wide Remap Experts network. We regularly work with drivers in Llanidloes, Welshpool, Newtown, Machynlleth and Llandrindod Wells and nearby areas of Wales.
Each remap is dyno tested before it is signed off, and is protected by a 30 day money back guarantee and a lifetime software warranty. Ask for a quote online or by phone.
If you are closer to Gwent, Cardiff and Chester, those neighbouring Remap Experts sites can help too.

Want these figures on your Chrysler 300cc 5.7 V8 340?
Send your registration and we will confirm the exact remap, the price and the next available slot.
Included
What we can do for your Chrysler 300cc
Stage 1 ECU remap
Add power and torque and improve driveability. Software only, tailored to your engine.
ECU repair and testing
Is your engine control unit playing up? We can arrange testing and repair, and source replacement ECUs.
DPF and EGR fault repair
Persistent DPF or EGR errors diagnosed and resolved in accordance with all current road-legal standards.
Engine carbon cleaning
Fault finding and carbon cleaning for the inside of your engine, typically completed in a couple of hours.
Same model
Other 300cc engines
From quote to remapped in four steps
No jargon and no pressure. Here is exactly what happens.
- 01
Find your vehicle
Choose your make, model and engine to see the standard and remapped power and torque for your car.
- 02
Request a quote
Send your details and we contact you by SMS or call back with a quote. No obligation.
- 03
Book with your local site
Your local Remap Experts site arranges the remap and answers any questions about your car.
- 04
Remapped and dyno tested
Your remap is fully dyno tested, with a 30 day money back guarantee and a lifetime software warranty.
Everything you need to know
Plain-English guides to how remapping works, what it does and what to check first.
- 6 min read
What is ECU remapping?
The engine control unit, what a remap changes, and who it suits.
Read guide - 5 min read
The benefits of ECU remapping
More torque, better driveability and the potential for better economy.
Read guide - 6 min read
How ECU remapping works, step by step
From reading the original software to the dyno test.
Read guide