What’s up I got a problem I can’t figure out I’m backfining through my intake. When I’m at an idle it’s great but when i let the clutch out and start to go I can feel it start to load up and it’ll loose power and start back firing. Doesn’t do this all the time but definitely a lot more than usual. I’ve changed the plug wires cap and rotor. I just checked my fuel pressure and at idle I’m 31-35psi. Need some advice and thanks in advance.