Okay so the other day I was driving when a Porsche pulled upside me, so I dropped it down in to third, I was at about 32-3600 RPM. Felt like the v cut out, so I stayed ready between these RPM ranges and it doe it every time. But when I get past this range there are no issues, it also does this In park when i rev to these rpms, any thought on what the problem might be?

The only modifications are spectra intake which was on the car when I purchased it.