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Thank for the info street demon 625 is on my list. Did it take any tuning to get it right/

Looking for suggestion on a new carb for my 73 340. Have a couple of thermoquads and am sick of messing with them. Anybody try the new Demon carbs?

The EGR would hang open a little which would lower the vacum signal to the map sensor. The computer sees lower vacum and adds more fuel.

Back in the day we used to see issues with the coolant temp sensor the O2 sensor and the egr. Used to do all three and then a battery disconnect to reset the computer.