I recently recieved some information from this company. They have a chip for the e39 M5 engine they claim will significantly raise both the horsepower and torque of the engine...Does anyone have any experience with this company?
This is interesting. Here's a quote from the Dinan page concerning engine tuning for the M5:
Congratulations to BMW's engineers! For the first time in nearly 20 years, BMW has provided the driving enthusiast all of the power that can be mustered as a result of engine management tuning. BMW's sophisticated detonation control systems and high speed engine management computers have left no horsepower for we tuners to extract; as much as we hate to admit it.