GM owns your cars software, don't fiddle!

[Chevy366]

Current and future ECM designs can/will be fast enough and smart enough to detect the presence of such boxes...at its simplest, the ECM could simply calculate the acceleration rate and if the truck is accelerating too quickly to be plausible (IE, the engine is making over stock horsepower), it will know something is up.

Harness/piggyback controllers are not the answer, unfortunately.

Ben

That's a lot of trouble to go to to stop someone from altering their vehicle. Once the warranty period is gone it is the owners responsibility to preform repairs it would be hard to sell the point that one could not do repairs to their own vehicle. I suppose repair parts will be car maker compliant to not detract/add to the system and work with the system kind like a plug-and-play for computers?
I have to ask ole wise one, what is then? Enlighten us.

I once knew a guy at John Deere, he worked on the diagnostics side of the ECM and one of their projects was working on code to detect sensor fooling boxes yet be able to monitor normal and abnormal real sensor operation.

That would take a lot of processing power to monitor all the data would it not? Do you know if he was successful or not?
I am just throwing out possible solutions to the dilemma.

[GMPX]

That would take a lot of processing power to monitor all the data would it not? Do you know if he was successful or not?
I am just throwing out possible solutions to the dilemma.

I don't know, it was at least 8 years ago that I last spoke to them, I would say so because these days processing power is not an issue with the modern CPU's they are using, particularly on big Diesels where they aren't turning big RPM's so the ECM has a lot of time to do things between injection events.