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**Shane@DBPerformance** · 10-07-2005

The A/F ratio in DSMLink is not real. It is a just a calculated guess based on the amount of airflow the MAF is seeing versus the amount of fuel the injectors are spraying. If you have a boost leak or a hacked MAF or a bad line going to the FPR, then it will be way way off. If you want to know your real A/F ratio, you need to get a wideband. An EGT does not tell you if you are rich or lean either, it just tells the exhaust temps, which are more effected by timing than A/F ratio.

10-07-2005	#8
Shane@DBPerformance formerly ecoli Join Date: Oct 2003 Location: On the dyno Posts: 4,892	Re: Question about A/F ratios The A/F ratio in DSMLink is not real. It is a just a calculated guess based on the amount of airflow the MAF is seeing versus the amount of fuel the injectors are spraying. If you have a boost leak or a hacked MAF or a bad line going to the FPR, then it will be way way off. If you want to know your real A/F ratio, you need to get a wideband. An EGT does not tell you if you are rich or lean either, it just tells the exhaust temps, which are more effected by timing than A/F ratio. __________________ www.dbptuning.com