Welcome to the Authorised Wales distributor for Diesel Tuner™ Systems The Spider® diesel tuning system from Diesel Tuner™ is the nearest thing to a custom remap whilst still remaining plug and play. The Spider® is proving to be one of the most advanced add-on performance systems available. With RPM detection*, unique Multi ignition map technology™ and intelligent software switching which allows the system to adapt to your driving style. Undetectable once removed, no more lost remaps after a routine service! No other similar system has more functions and intelligence over the Spider® diesel tuning system. All systems carry a 5 Years transferable warranty