Rich idle AFR in neutral but good in drive ?

Foxsetup

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Joined
Jun 15, 2015
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Location
saint-polycarpe , quebec canada
Hi everyone, first of all sorry for my bad english i amfrom
montreal quebec canada and i speak french. I'm currently tuning my 2005 mustang gt with a p1sc1 procharcher, comp cam stage 2 blower cam, 60lbs inj. ba-5000 maf , gt500 fuel pumps with sct prp. i have right now that weird thing going on. When the car idle at 160+ ect my idle in neutral ( it's an auto ) goes really pig rich ( 12.5 -13 ) but in drive it's perfect so are the stfts ( 0,97-0,99 and 14.0-14.6 ). The only thing i see would be something is wrong with the numbers in the ISC neutral integrator. Any more idea ? thank you
 

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