Thread: Car runs hotter with new thermostst and water pump?
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  #19  
Old 07-04-2005, 02:26 PM
Arthur Dalton Arthur Dalton is offline
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Location: Florida / N.H.
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HFM-SFI engine management systems run much better at the higher temp. They are lean burn engines by design and that is why the thermo is 87C at open.
If any engine I know of that runs better at higher temps [ read injector duration times] , it is the HFM 104s...the ECU is mapped for it and lower temps actually decrease perfomance on this system.
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