Shorty Headers
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Joined: Jun 2001
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If the module is anything like other "performance" chips, I would say you were told the right thing, it probably advanced the timing more so than usual, thats basically all the performance chips do or so I am told, most performance chip companies recommend premium fuel for this reason.
It was my understanding that at operating temperature the ecm tries to advance the timing as much as possible to get optimum performance (another reason for the knock sensor in vehicles that have them), maybe the module or chip, takes it a step further and what the ecm reads as acceptable, is beyond what would have been considered accpetable and brings on the need for premium fuel. Who knows?
It was my understanding that at operating temperature the ecm tries to advance the timing as much as possible to get optimum performance (another reason for the knock sensor in vehicles that have them), maybe the module or chip, takes it a step further and what the ecm reads as acceptable, is beyond what would have been considered accpetable and brings on the need for premium fuel. Who knows?
Posting Legend
Joined: Sep 2001
Posts: 30,255
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Some performance chips offer a trade-off vs the engine wear and fuel cost and consumption. Usually the chip will allow you to revert to std programming but if the thermostat has been replaced that wear continues unfortunately. There is no such thing as a free lunch.
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