I was curious is it possible to get decat performance without the loud amounts of noise? I have cat exhaust but the rear piece is custom and i find it rather loud already!!

 

Can you maybe get exhausts that are quieter at lower revs and sound louder when reved harder? I was reading up and heard it can be achieved with certain resonator or something...

 

If anyone with better expertise could shed some light on this matter, it would be great.

 

Do japspeed do exhausts with cats in them for the 300zx?

Edited April 5, 201312 yr by Javelin

just turn the music up lol

ok I thinks its to do with the expansion chamber after the down pipe on mongoose its fairly big so you are always going to get a deep growl but its all about which combination of parts you put together.

I am sure somebody will corect me

just turn the music up lol

 

wouldn't really help on longer journeys as you could still hear a decat.

 

mainly dont want everyone to know every time i touch my gas pedal!!

You can fit mufflers in the mid or back box

Wouldn't that kill the performance?

 

Would something like this work?

 

http://www.conceptzperformance.com/Cart/description.php?II=3425&Car_Type=300&UID=2013040516374493.97.112.59

Well, i went from decat pipes with straight through exhaust with small rear boxes and only a 2.5inch exit, to decat pipes straight through with large back boxes (6" exit), and this quieted the system down a lot. which is odd, as i thought it would make it louder, so i can only assume, Larger back boxes are going to muffle the sound a lot better but will still give you the same performance.

I see, would companies like japspeed do test or down pipes with cats or silencers?? i am sure the newer pipes would still increase performance as i have the stock system from middle to front. cause i do really like my current cat back system as its fairly new too

Edited April 6, 201312 yr by Javelin

I see, would companies like japspeed do pipes with cats or silencers?? i am sure the newer pipes would still increase performance as i have the stock system from middle to front. cause i do really like my current rear system as its fairly new too

 

Thats something you would have to ask them matey, but from the photos of products available on their website, i wouldn't hold out too much hope. a Cat is always going to be restrictive, but you might be able to get a performance cat, but think it would be universal rather than tailor made for the zed.

whats the difference in cats and resonators? cause you can have resonators on the test pipes!

so i can only assume, Larger back boxes are going to muffle the sound a lot better but will still give you the same performance.

 

^^^^^^^ As far as Im concerned smaller back box/s = louder exhaust note :yes: