backfiring and stumble

tucamote

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Joined
Feb 27, 2009
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78
Location
Dallas
I have a 2000 Lightning with 2.6KB, 2800 sct maf in a 100mm tube 750cc RC injectors TF heads cams from MHS. The truck runs fine if I slowly get into it but if I get on it and go from 0 boost to say 6psi it will go lean to 14.5 to 15 afr for a second then go to 11.7afr I have sct prp software what would I need to change in the tune to get rid of this?
 

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