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Tuning issue

K

kurupt305

New member
Why does it seem like my tune changes by itself we command 11.0 and get 11.1 on a street run but then the next day at wot at 5k pmus rpms it leans out to 13-14afr by itself? Cars a 05 gtp
 


For instance let's say 2 day I tune my car I can get it to run a perfect 11.0 all night the second the car sits overnight the following day at higher rpm it will jump up to 13 14
 
closed loop vs open loop brah.

Unplug the front o2 sensor and run open loop all day. You probably have the wrong injector constants or a busted maf table thats causing it.
 


right, so run open loop if you cant figure out how to make closed loop work... its not a big deal and typically with cam cars you cant ever make it work right.
 
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