Draper ,
those 2 picture you just shown is one of APH and SGM , thats ok
You said in your post when you posted the first time that this one was 1 pull from the base pull and then a pull with the APH tuned one
ofcourse you will have the big gain from the base tune...
and the one on SGM was with Sasha tuned map and your Cobb map which is already tuned from them,,
since you came in his shop with an afr 12,5
from the factory the 370z run lean ,, not rich like that , you even have breather mod and exhaust ,, if you wasn't tuned when you went to SGM ,, you would have been in the 14.x AFR
then the big gain would have shown like APH in his graph
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