well I got a good one for you I went to check my FPR for fuel in the line well it doesn't have any but I started the car air fuels are pig rich...so with the vac line disconnected from the FPR its rich but goes leaner quicker with a controlled vac leak if that makes any sense...so I tried my theory just to see I plugged the FPR back in and took a vac line off car starts and runs barely surges and it starts out rich but goes back to normal AFs quicker if I plug the vac leak up the car will surge bad on re-start again and run rich ....take plug off make a vac leak it starts right back up barely surges and AFs go to normal quick again its weird really weird now what???