Quote:
Originally Posted by RobRed
The CAN bus carries data between systems - it;s the network. The issue lies in that erroneous signals are created causing various modules to react not as they should.
ie. The exhaust system valves were not opening soon enough or at the correct angle making the car sound more muted than it should have been and reducing performance.
These "dirty" signals are seen across the DME, TCU and other various modules causing them to react to situations that did not actually exist, or in some cases reduce the performance to err on the side of caution until the fault codes are cleared.
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Ahhhh I see. Thank you for the clarification.
Probably not as easy as it sounds but just make the exhaust valves open 24/7!!!!