I have a 2021 mustang gt and these are all the parts going to the car:
-whipple gen 5 stage 2
-the oversized heat exchanger
-dw400 fuel pump
-reische 170 thermostat
-UPR catch can
-id1050 injectors
-kooks 1-7/8 long tube headers
-X pipe -boundary oil pump gears, crankshaft sprocket, and...
I recently ordered the whipple gen 5 stage 2 and ARH 1-7/8 long tube headers for my 10 speed mustang. And I was wondering will I get some back pressure problems since the headers will be connected to the stock resonator/active Exhaust ?