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Old 12-19-2019, 10:48 AM   #5
laynlo15
 
Drives: 2022 Lt1 A10
Join Date: Nov 2015
Location: clark, mo
Posts: 8,882
The 3" should be the 75mm and if the 80mm is the stock upper you should be there at 15.5 to 16 psi.
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