Hi Everyone,
I went to Tucson to see Brian Catts today and tested his Y-pipe with the new lined flexes. Good news, there is no more whoosh or hiss, woohoo... I noticed that there is a different sound than stock, the new Y-pipe has a more deeper sound. Another good thing is the metal grinding noise from my car is GONE, so the noise was indeed from the heat shield. As for power, I am sure there is an increase, but i haven't felt it yet. I have to do more driving to find out.
For replacement, I think Brian posted up something about it. So if you are thinking about ordering, go ahead..

Ronald

 

Please post the performance result.
I'm curious as to where in the power band does it increase.
In addition, is there any decrease in the low end for the sacrifice
of the high end.

 

has the scraping issue been elevated? I remember people complaining about some Y-pipes kind of sticking out too much and they were easy to scrape the road with. Just wondering.

 

My CE Y-pipe bottomed out and scraped a hole in it. I had it fixed and the height raised so it doesnt scrape any more

 

Not hijacking the thread, but wondering if removing the stock resonator and putting a round pipe from the cat all the way back to the rear y pipe makes a sound and hp diff. Seems that the rear mufflers are plenty to keep it quiet, but the center muffler is redundant. Im thinking a muffler shop could straight pipe it pretty cheap and see how it runs with the stock mufflers. Anybody done this?

 

XBONE... I had my resonator cut off from the cat back and still have stock mufflers. There is a little deeper sound that you can hear. Not sure if any hp gains although I am sure there is a couple.. FYI my friend did this as well but put on Greddy muf and y-pipe w/o cat. He had to put in a small resonator back in because it was too loud.

 

How about some pictures of the y-pipe installed.

Thanks

 

Thanks for the feedback Siggy, did you have any engine lights come on or any popping or backfiring? Did you replace the whole pipe or just the section where the resonator is?

 

Yes, some pics would be nice... If you don't mind.

 

i would think it would look the same as the pipe from my thread...

The work was done on the inside of the pipe if i rmember correctly... ???

 

I don't have any dyno result, but I drove around again today, i do feel there is more power in all rpm. It's easier to spin tires.

 

I think it's the same as stock. I haven't scraped anything these past 3 days. My driveway is pretty steep too, and i have no problem there.
Oh my car is lowered with Progress Springs.

 

Sorry Ramberg, I don't have any picture right now. I will try to get one if I go under my car again. The install was done at a Nissan dealership and it was so quick that I forgot to take pictures. I ended up just chatting with Brian.

 

Yes I did this. And it does sound like a slightly less loud G35 Coupe with the stock mufflers. I have a CAI and a UDP and I find it did make a big difference. My next project is a ISO Thermal (Copper) Spacer 16 HP & TQ Gain).

 

I thught that kit was not for frw vq's ... i remember someone found a site that was selling those?? maybe im wrong.. .

why not just buy nissanworks spacer kit... its been tested and APPROVED! with hp gains close to or past that...

 

x-bone, no it did not throw any SES lights. It was just a plain tube from cat back to the muffler split. Muffler shop did not even charge me..No popping or cracklin'.

 

and yuo felt a difference?

 

felt a little difference not a lot but a little deeper tone. Was warned if I went with Mag mufflers that I would need a some sort of small resonator put in for noise control.

 

anyone know if NY smogs the cars?

I'm moving there in a few years and I will get the catless Y-pipe if at all possible. I just don't feel like holding onto the stock pipe

 

http://forums.maxima.org/showthread.php?t=408102

There is a big difference between the FWD and RWD VQ35DE. The two spacer's function is completely different. The RWD spacers will not work on the FWD VQ35.

 

It doesn't, at least now.
If You don't have CEL - You're good

 

just what i wanted to hear