I've looked all over the place for answers. When I'm driving in 2nd through 5th gear I notice around 2500 rpm my jumps up about 1000 rpm then drops back to to correct rpm . It only happens when I barely gas (normal driving) if I WOT it doesnt do it. Some are saying cluch is slipping but I notice today I was I. Fifth I pressed the clutch and slowed down for a light and the idle dropped really low and started boncing like it want to cut off. Usually I know that's a bad TPS but if I let the car idle it doesn't drop or show any signs . I was running a turbo smart BOV dual port set to 50 atmospheric 50 recir. Other than that its stock. I'm thinking the atmospheric route is the cause of this. I put the oem bov back on but it's still doing it any ideas?