today's dyno results!
#16
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I was told that the exhaust should be here within the next week or so. I'm having the driveway sealed next week, so the car will stay in the garage. If I can get the exhaust delivered then installed I'll try to have the dyno pull done the week of August 30th. I won't have separate pulls done with/without the Cargraphic cat, too much time, labor, and dyno money to do so.
#17
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>> I wonder how much can be gained just by increasing the fuel part of the ratio.
Apart from wide open throttle, the DME controls the fuel to give stoichiometric (14.7:1) by using the oxygen sensor feedback. If you used a higher fuel pressure then the injectors would just be given a shorter opening time (pulsewidth.)
Chip calibrations should be done with no feedback loop (oxygen sensor disconnected.) When connected afterwards the oxy sensor corrects the basic map.
Apart from wide open throttle, the DME controls the fuel to give stoichiometric (14.7:1) by using the oxygen sensor feedback. If you used a higher fuel pressure then the injectors would just be given a shorter opening time (pulsewidth.)
Chip calibrations should be done with no feedback loop (oxygen sensor disconnected.) When connected afterwards the oxy sensor corrects the basic map.
#18
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Phil, is the 14.7 the desired number across the board, or does that change with revs, wide open throttle, etc? I've been hearing 13:1 or so are a target number with wide open throttle.
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Originally Posted by Damian in NJ
Phil, is the 14.7 the desired number across the board, or does that change with revs, wide open throttle, etc? I've been hearing 13:1 or so are a target number with wide open throttle.
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