Remapping for All Cars and Vans
Chip tuning is the original terms of what is now known as ECU Remapping. Chip tuning requires the removal of the Eprom from the ECU and the software is programmed to the chip on the bench with a dedicated programmer. Once the maps are extracted from the chips, the are identified, altered and loaded back onto the chips. This process is know as the remapping. In most cars due to the introduction of software updates by dealers, we can use the same communication method to introduce a custom version of the maps. This is done by the OBD diagnostic port as found on most cars. As manufacturers have tried to prevent this method of remapping the ecus has developed to using the processors known as Tricore. These do not allow at this present time remapping through the OBD port without removal of the ECU first to alter the boot loader of the ecu. This is less intrusive as all security bolts are replaced and special tools designed by Big Fish to prevent any soldering onto the board using special probes and spring loaded arms.
We work on all ages of ECU from the early EDC’s requiring chip tuning right the way through to modern MEDC17 locked tricore processor ECU’s with tuner protection. We use all the latest tools from CMD Technologies, Alientech, EVC, VCPowerTeam, Byteshooter, Piasini and others.
We also have various OEM level diagnostic level tools including Renault CAN Clip, Opel/Vauxhall Tech2, Porsche PIWIS, Bosch KTS, Peugeot Planet, BMW GT1, Mercedes STAR, Citroen Lexia, Fiat Examiner, Ford/Mazda/Land Rover IDS, Volkswagen/Audi/Seat/Skoda VAS 5054 & VCDS.
All our remaps are written in-house and all ensure the key following points (Though not limited to):
Air Fuel Ratios (AFR’s)
It is important to ensure optimum AFR is achieved in order to ensure that stoichiometric mixture. This in basic terms means that the engine isn’t running lean or rich fuel mixture. This is also important in ensuring that your engine is MOT compliant.
It is important that correct boost pressure control is achieved to ensure that no spikes or dips occur to ensure maintained life of the turbo charger. A spike in the boost delivery can cause over-boosting which pressurises the compressor to a level beyond its tolerance.
Exhaust Gas Temperatures (EGT)
When increasing the fuelling and boost pressures of an engine it naturally increases the EGT. It is important to log the EGT of an engine as there is a crucial limit which shouldn’t be surpassed to ensure maintained longevity. This is a good tool in monitoring the efficiency of uprated intercoolers etc.
Injector Duty Cycles (IDC)
This is crucial to know the fuelling limitation of the injector. On some modern cars we are seeing injectors with 100% IDC from standard meaning there is no room for further modification without upgrading the injectors (this is rare however). If it was a turbo application, and the boost pressure was raised, due to there being no additional fuel available, it would cause the engine to run lean and potentially melt your pistons. As a result of fine monitoring and adjustment to our remaps, we are able to provide safe and reliable tuning solutions to our customers. We will not operate outside of the engines capabilities on standard components as your vehicles reliability is as important to us.