Catalyic converters.... can I take them off?


Asked by Jan 29, 2012 at 12:46 PM about the 1991 Nissan 300ZX

Question type: Car Customization

Can I take off my Catalyic Converters without causing sensor problems or the car throw some codes? I want to grab a few extra horsepower out of my Z. The car came with a Flowmaster exhust system but only from the Converters back. I would like to just go with a stright pipes by passing the converts. Will I beable to do this?

4 Answers


Your car wont care about the Cats --If you have a state inspection, they wont like it. The crazy thing is that if your cats are working -- they dont affect performance. If they get clogged up from extra fuel - thats when your cat problems start -- a Higher perf cat may be an option if you have to stay green


I live in maryland & If you tag your car Historic in this state they don't require an Inspection. I just wanted to know if it's worth doing at all? Matbe a little HP gain & to make it sound better....


its worth it

1 of 1 people found this helpful.

I think I'll take that project on this weekend along with the other I have to do on that car...

Your Answer


Looking for a Used 300ZX in your area?

CarGurus has 137 nationwide 300ZX listings starting at $3,995.


Nissan 300ZX Experts

  • #1
    Tom Demyan
  • #2
    Jamie Staples
  • #3
View All

Related Models For Sale

Used Nissan 240SX
12 listings
Used Ford Mustang
685 Great Deals out of 38,302 listings starting at $895
Used Chevrolet Corvette
276 Great Deals out of 20,696 listings starting at $2,990
Used Toyota Supra
63 listings
Used Chevrolet Camaro
403 Great Deals out of 30,568 listings starting at $3,550
Used Mazda RX-7
67 listings
Used Mitsubishi Lancer Evolution
19 Great Deals out of 565 listings starting at $14,000
Used BMW M3
46 Great Deals out of 1,747 listings starting at $5,995
Used Mitsubishi 3000GT
89 listings starting at $2,999

Used Cars For Sale

1996 Nissan 300ZX For Sale
11 listings starting at $3,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.