setup is as follows:2005 5.3 dbw, stock vacuum ref. return style fuel system,aem 400 lph pump, th350 trans, LSA 52# injectors, gt45 turbo ,intercooled, elgin e1840p camshaft
while tuning in open loop im getting bad cruising surge that also leans back and fourth, as you can see it seems to only come about while tps position is at 20%. Attachment 99730Attachment 99731
