i just took that cat out of my '81 280zxt. there are no smog laws here in CO so i was wondering would it be bad to run the car with no cat until i get a straight pipe fabricated? can it cause any damdage? it is late in the day and i am supposed to be out tonight and that is my only transportation. it doesn't sound all too terrible when i started it, kinda like a V8 with flowmasters. thank you for any info.