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 out of 1 people think this is helpful.

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

Your Answer

Add photo

Related Questions


Looking for a Used 300ZX in your area?

CarGurus has 128 nationwide 300ZX listings starting at $3,995.


Search Nissan 300ZX Questions

Nissan 300ZX Experts

#1 Tom Demyan
Tom Demyan
Reputation 440
#2 Jamie Staples
Jamie Staples
Reputation 280
#3 dandyoun
Reputation 240
View All

Related Models For Sale

Used Nissan 240SX
18 listings
Used Ford Mustang
320 Great Deals out of 45,522 listings starting at $2,000
Used Chevrolet Corvette
113 Great Deals out of 20,672 listings starting at $3,499
Used Chevrolet Camaro
132 Great Deals out of 35,283 listings starting at $1,995
Used Toyota Supra
48 listings starting at $43,997
Used BMW 3 Series
1,020 Great Deals out of 34,833 listings starting at $900
Used BMW M3
59 Great Deals out of 1,885 listings starting at $6,999
Used Honda Civic
488 Great Deals out of 80,458 listings starting at $558

Used Cars For Sale

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