A/F ratio under boost

BLACK10

BLACK10

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what are you guys seeing as far as your A/F while regular driving vs while under boost mine has been running 14.7-15.4 just driving around then when i get on it hard the A/F gets real rich drops to 10.1 dont know if it goes any lower than that that is as low as the gauge reads just wondering if this is the norm or do I need some more tunning done?
 
I ordered a meth injection system from D.C so when it comes in I will have it all re tuned and pick up some HP.....I hope
 
mine are low also last time I was on the dyno i put down 560rwhp hopefully I will see the 600's after leaning it up a bit and pulling out a little timing along with the meth injection
 
BLACK10 said:
what are you guys seeing as far as your A/F while regular driving vs while under boost mine has been running 14.7-15.4 just driving around then when i get on it hard the A/F gets real rich drops to 10.1 dont know if it goes any lower than that that is as low as the gauge reads just wondering if this is the norm or do I need some more tunning done?
Click to expand...
the cruising af is normal, the ecm is in closed loop till about 75% throttle. your fmu is too rich, what ratio od discs is in there?
 
here is the dyno from my 03 cobra.....under full boost ~15psi right around 11.8-12.0.....this is with a twin screw blower, hense the torque "curve".
full_1842_p14077.jpg
 
My brother has an 03 with very little mods engine wise, pulley, controller, tune, and we're pretty much neck and neck from a roll. His complete suspension setup helps him leave me from the line.
 
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