relative to the 5 year or just newer cars.... one thing that will surely be an issue is the integration of non-engine related controls into the ECU or other module. After awhile, my fear would be any removal of the whiz-bang stuff, means no more proper running. Limp-home and failsafes taking over.
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Yes. The rules should strive to avoid forcing owners to disable stock equipment, for exactly this reason.
Case in point: disabling ABS or traction control by disabling wheel speed sensors can cause cars to go into limp mode. There may be other ways to disable these systems that don't cause issues.
Also, removing catalytic converters can cause cars to go into limp mode too, if they have both pre-cat and post-cat O2 sensors, as mine does.
The difference here is that the rules require disabling ABS/TC, but don't require removing cats. I therefore don't have a problem with the cat rules, but I do have a problem with the ABS/TC rules. If the rules must require disabling these systems, it should allow for more than one disabling method.
I've actually drafted a letter already on this point, but before I sent it I need to confirm that removing wheel speed sensors actually causes a problem on my car. The internet world tells me it does, but I don't want to bitch and moan about it too loudly until I prove it to myself.
Josh Sirota
ITR '99 BMW Z3 Coupe
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