onesiksupra

Im having a fuel issue i believe - I have a Vortec inline pump and FPR. SAFC also. At about 3k RPM the car wll drop real lean and lose acceleration then a split second later it kicks back Rich and all is normal. Happens in each gear if i drop done around 3k RPM at Shift into the next gear. IF I stay above 3k - it doesnt happen ?

I can t figure out why ? - This just started a couple weeks ago - I thought it was lack of fuel but I set the AFC richer -that didnt help just blows some rich smoke -

t03/04Turbonetics
DElta WG
FMAX mani