School me some AFR

YzGyz · 06-26-2015, 09:45 PM

Can someone educate me on afr starting from the basics to intermediate stuff. I'm a boost noon and would like to learn what and how to monitor my afr so I don't blow my engine up.

Your afr student,
YzGyz

G37Some · 06-27-2015, 12:25 AM

https://www.youtube.com/watch?v=9uFdrcPkMGE

YzGyz · 06-27-2015, 08:08 AM

That is Good info on how the 14.7/1 ratio. How about brain food on what should happen or not happen during various driving conditions such and easy roll on, quick jab, wot, letting off throttle. What are signs ofor something going wrong or about to go wrong?

YzGyz

thangcu35 · 06-27-2015, 11:16 AM

Some basic infos on Pump gas:
Cruise - 14.7-15 afr
Quick throttle bleep: 10.5-11.5 afr initially
Wot - 11.3-11.7 afr. Run on richer side during hot weather months
Part throttle accelerating - 11.5-12.5 afr
Off throttle coasting - max lean due to injectors shut off
Tune fuel by setting fuel adjustment table to 100 across the map. Then make adjustment to MAF table to get to target afr.
When tuning afr on street, set your timing low to prevent blowing things up if it runs too lean. dyno is required to tune timing.

06-26-2015, 09:45 PM	#1 (permalink)
YzGyz A True Z Fanatic Join Date: Jun 2013 Location: Houston Posts: 1,449 Drives: 2010 Nismo Rep Power: 63	School me some AFR Can someone educate me on afr starting from the basics to intermediate stuff. I'm a boost noon and would like to learn what and how to monitor my afr so I don't blow my engine up. Your afr student, YzGyz __________________ http://www.the370z.com/members-370z-...gyzs-turn.html YzGyz

06-27-2015, 12:25 AM	#2 (permalink)
G37Some Base Member Join Date: Apr 2014 Location: Tampa, FL Posts: 144 Drives: 2008 G37s Rep Power: 11	https://www.youtube.com/watch?v=9uFdrcPkMGE YzGyz likes this. __________________ instagram : @TurboG37

06-27-2015, 08:08 AM	#3 (permalink)
YzGyz A True Z Fanatic Join Date: Jun 2013 Location: Houston Posts: 1,449 Drives: 2010 Nismo Rep Power: 63	That is Good info on how the 14.7/1 ratio. How about brain food on what should happen or not happen during various driving conditions such and easy roll on, quick jab, wot, letting off throttle. What are signs ofor something going wrong or about to go wrong? YzGyz __________________ http://www.the370z.com/members-370z-...gyzs-turn.html YzGyz

06-27-2015, 11:16 AM	#4 (permalink)
thangcu35 Base Member Join Date: Mar 2014 Location: Fayetteville, NC Posts: 97 Drives: '12 Sport/Tour/Nav Rep Power: 15	Some basic infos on Pump gas: Cruise - 14.7-15 afr Quick throttle bleep: 10.5-11.5 afr initially Wot - 11.3-11.7 afr. Run on richer side during hot weather months Part throttle accelerating - 11.5-12.5 afr Off throttle coasting - max lean due to injectors shut off Tune fuel by setting fuel adjustment table to 100 across the map. Then make adjustment to MAF table to get to target afr. When tuning afr on street, set your timing low to prevent blowing things up if it runs too lean. dyno is required to tune timing. jaytirbhaw and YzGyz like this. Last edited by thangcu35; 06-27-2015 at 11:21 AM.

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