BMW 323ci 170 (E46)
Engine Tuning Blackburn
BMW 323ci 170 (E46) in Blackburn. 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
BMW 323ci 170 (E46): standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+23 bhp · +14%- Standard170 bhp
- Remapped193 bhp
Torque
+40 Nm · +16%- Standard245 Nm
- Remapped285 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
What does a remap do for the BMW 323ci 170 (E46)? Our figures show power up from 170 to 193 bhp (+14%) and torque up from 245 to 285 Nm (+16%), a stage 1 result you can book in Blackburn.
Treat the numbers as a guide: they are stage 1 estimates for a petrol BMW 3 Series in sound condition, and individual cars differ.
BMW 323ci 170 (E46) power and torque after remapping
- Fuel: Petrol
- Standard power: 170 bhp, remapped: 193 bhp (+23 bhp, +14%)
- Standard torque: 245 Nm, remapped: 285 Nm (+40 Nm, +16%)
- Service: stage 1 ECU remap, fully dyno tested
How engine tuning works on a petrol BMW 3 Series
A petrol remap re-works the engine management calibration: air-fuel ratio, ignition advance and boost where fitted. The result is more power and a more immediate throttle, delivered by software rather than hardware changes.
BMW 323ci 170 (E46) against other 3 Series engines
Ranked by power gain against the other petrol 3 Series engines (26 in total), the 323ci 170 (E46) is 7th, exactly the 3 Series petrol average.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 23 bhp and 40 Nm sits below that benchmark.
Book ECU tuning for your BMW 3 Series in Blackburn
Drivers in Blackburn book through the Blackburn Remap Experts site, one of our local sites across the UK. We regularly work with drivers in Darwen, Preston, Manchester, Blackpool and Nelson and nearby areas of the North West.
Every remap is fully dyno tested and comes with a 30 day money back guarantee and a lifetime software warranty. Call 0800 779 7864 for a quote.
If you are closer to Preston, Manchester and Lancaster, those neighbouring Remap Experts sites can help too.

Get a quote for your BMW 323ci 170 (E46)
Send your registration and we will confirm the exact remap, the price and the next available slot.
Included
What we can do for your BMW 3 Series
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 3 Series 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