Is our cars come "rich" from the factory.?

Chan Chee Hoe · 07-31-2011, 12:25 AM

Hi Friends,i did a "Uprev" reflashed yesterday,the tuner told me,the car is running very rich[10.5:1] in running from factory,any reasons behind this.?My tuner has bring it down to 12.5:1,any harm to the engine,esp in warm weather in S'pore.?Thanks.

Chan Chee Hoe · 08-08-2011, 10:20 AM

I have adjusted the A/F ratio back to about 11:1,12.5:1 is too lean for our weather,engine runs rough & noisy,when going long distance[about 3o kms] engine felt less power.

07-31-2011, 12:25 AM	#1 (permalink)
Chan Chee Hoe Track Member Join Date: Mar 2009 Location: Singapore Posts: 861 Drives: 370z,Yellow,7sp A Rep Power: 17	Is our cars come "rich" from the factory.? Hi Friends,i did a "Uprev" reflashed yesterday,the tuner told me,the car is running very rich[10.5:1] in running from factory,any reasons behind this.?My tuner has bring it down to 12.5:1,any harm to the engine,esp in warm weather in S'pore.?Thanks.

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08-08-2011, 10:20 AM	#2 (permalink)
Chan Chee Hoe Track Member Join Date: Mar 2009 Location: Singapore Posts: 861 Drives: 370z,Yellow,7sp A Rep Power: 17	I have adjusted the A/F ratio back to about 11:1,12.5:1 is too lean for our weather,engine runs rough & noisy,when going long distance[about 3o kms] engine felt less power.