Thanks ! I appreciate the explanation - btw I am very happy with the
flowmaster 44s , it was just the right amount of “ I want a bit louder “ I was looking for - these used with my front cats sound great for what my car is . No drone or popping - and although flowmasters are said not to flow good , I imagine they flow better then OEM mufflers . Glad I learned about exhaust scavenging from you guys as well ( I probably would have done just one muffler not knowing about a balanced system ) next thing I will tackle in springtime is water temps . During the winter when it’s cold here my car runs 170-180 degrees . Summer it runs 225 up to 240 sometimes . I have the OEM fan and shroud and it sucks air thru the fins hard . The radiator is OEM and looks older ( not sure how old ) it appears to flow ( see the video ) I am using 50/50 antifreeze mix . These are my plans - try a tank of 93 octane before I do the timing , for all I know it may be around 18 , lol - ( I heard that could cause it to run hot if set to high and running 87 ) I suspect 14 degrees is good for 87 ) if that does not help then flush the system in spring of antifreeze and run distilled water and water wetter - if temps drop to 225 max , then I will leave it like that . Last step is change radiator .