Quote:
Originally Posted by RupertPupkin
This was an answer on a different forum I'm in... "Depends on how it was tuned for no cats. Was the cat fuel enrichment turned off? If it was you'll burn your cats out in no time."
:/
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+1.
Cat over temp protection kicks in more fuel to cool off cats. It will probably be turned off for a cat less setup to have better fuel efficiency.
Other than that, some minor tweaking on the closed loop sensors that won't make a huge difference. Most won't even touch these settings from stock.