CHIPTUNING FAQ

Stage 1:

• This is remapping only. All parts remain stock, that's why it's the most popular tuning choice.

20-30% increase in power and torque

Stage 2:

• Remapping.
• Aftermarket downpipes with higher performing catalytic converters or without them at all.
• Aftermarket intake manifold.

All these mods help to increase power 20-30HP more compared to stage 1.

Stage 3:

• Stage 2 + bigger turbocharger.

Optional:

• high and low pressure fuel pump
• exhaust

50-70% increase in power and torque

Stage 4:

• Huge turbocharger
• High and low pressure fuel pump
• Injectors
• Exhaust
• Pistons
• Rods
• Clutch
• Forged crankcase
• Intake/exhaust valves
• Crankshaft for getting higher displacement (Stroker Engine)

100-400% increase in power and torque

It's possible, but not worth it. But if you have access to E85 fuel, chiptuning makes sense.

This is the most popular question. And yes, chiptuning is completely safe if we are talking about Stage 1 or Stage 2.

Stage 3 is another story and there can often be some problems mostly with the gearbox in mileage range from 50`000 to 150`000 km.

Anyway in most cases the engine can handle up to double horsepower and torque figures, if a tuner does not remove software limits that protect the engine and its components from overheating.

Fuel consumption decreased at partial loads and increased at Wide Open Throttle(WOT). So if you drive your car without risking a fine, the consumption will be 5-20% lower.

When a car is tuned, several factors come into play:

1. The original Calibration Verification Number (CVN) is retained.
2. The programming counter does not increment, indicating that modifications have been made.
3. After reflashing a Bosch MEDC17 ECU, all CRC areas within the firmware are expected to match. The firmware of the car's Engine Control Unit (ECU) is divided into blocks, including the bootloader, operating system, and calibration data. Each block contains a CRC (Cyclic Redundancy Check) area, which should align with the corresponding areas in Bosch ECUs.

However, it is still possible for the dealer to determine if the car has been previously tuned, despite these precautions.

A firmware is a binary file with a Real Time OS inside. Its size is ranging from 256 to 8192 Kbytes and it's stored inside of ECU's processor. The file consists of program code and calibration data. For adding new features like Multimap, Antitheft, Rolling launch etc., the program code has to be disassembled and patched. For Stage 1-2-3 it's enough to change the calibrations only. For a proper tuning, logs need to be written.

Logs are very useful for tuning. Every electronic control unit operates with boost pressure, AFR, ignition angle etc. These values are stored inside of RAM and can be read by diagnostic scanner(logger) via OBDII port using a special diagnostic service mode.

There is a huge difference in power, torque and safety.
TuningBox advantages:

• Simple installation
• Easy to remove

TuningBox disadvantages compared to remapping:

• Power and torque are 10-50% lower
• Safety limits do not work properly
• Incorrect operation of the firmware
• It may malfunction and the engine will stop
• Wrong fuel consumption values on the dashboard

TuningBox has to be installed between a boost sensor/fuel pressure sensor and ECU.
Let's say the Engine Control Unit requests 1500mbar of boost but the TuningBox sends wrong/lower values to the ECU and to match them, it closes the boost pressure control valve. As a result the actual pressure is increasing.

After remapping, ECU requests higher boost pressure and many other parameters that depend on each other. All functions, safety limits etc. work correctly.

No. Modern ECUs have a password protected processor. To read, erase and write it in so called Boot mode (direct connection to ECU) or in Bench, the password has to be retrieved and inserted. But what about reflashing via OBDII? The firmware is RSA signed so it has to be bypassed, otherwise the engine won't start. The transferred data has to be encrypted and compressed in most cases. To start a program(reflash) session, so called Seed/Key needs to be matched. As you can see, there are a lot of problems that hackers try to solve. They are looking for a backdoor(mistakes in firmware) that will allow them to load their Trojan patch, so tuners will be able to write their own RSA unsigned modified files. That's the reason why some recently manufactured vehicles can't be reflashed and tuned at this moment.

Yes, we did.

Yes. Anyway almost any dealer can upgrade ECU to stock.