Beluga CBE with CNT Resonated Test Pipes

Dzel · 04-28-2013, 09:31 PM

Quote:

Originally Posted by Grindkiezer

Does it rattle?

Yes I can see where it hits the cross member. It goes and comes but I would say it is way more than a rattle. I travel a total of 6 miles to and from work a day. After this Sunday the car will probably never see the light of day until it's time to install the turbos. So for right now I have an old micro fiber rag wedged in between to the exhaust pipe and the cross member until I can figure something out.

Dzel · 04-28-2013, 09:34 PM

Quote:

Originally Posted by N0SL3N

You can remove the 4 bolts and use washers to space the cross member down. Some people say not to but I don't see the harm.

That might be what I will have to do.

roplusbee · 04-28-2013, 09:42 PM

Everyone that has anything other than stock components before the mid-pipe/y-pipe has the hiss. I think Motordyne found a way to mitigate it, but it is still there. I feel your pain though. I searched for exhaust leaks for weeks, lol.

Just for reference, I have the Greddy 20G TT kit. The downpipes (2.5" ish) connect straight to the F.I. TT-TDX (3"). My theory is that the difference in piping size contributes to the hiss as well as any places where the pipes split (in my case).

roplusbee · 04-28-2013, 09:44 PM

Quote:

Originally Posted by Dzel

Yes I can see where it hits the cross member. It goes and comes but I would say it is way more than a rattle. I travel a total of 6 miles to and from work a day. After this Sunday the car will probably never see the light of day until it's time to install the turbos. So for right now I have an old micro fiber rag wedged in between to the exhaust pipe and the cross member until I can figure something out.

Can you use a different hanger to bring the exhaust up to miss the x-member or am I thinking the wrong way? We are talking about up front near the O2 sensors right?

Dzel · 04-28-2013, 10:06 PM

No its the one right in the middle of the car the mid pipe is right over it.

Dzel · 04-29-2013, 06:03 PM

The exhaust is also 2.75"i forgot to tell you guys this.

stevent85 · 04-29-2013, 06:12 PM

You have to loosen the mid pipe a little from both ends and push it up and tighten them back up....will require 2 people unless you have something you can shove vertically to hold it up while you tighten. Also a lift would help tremendously. I had the same problem with my greddy exhaust.

Dzel · 04-29-2013, 06:55 PM

Yeah I did that with the factory Jack

stevent85 · 04-29-2013, 07:09 PM

Hmmm....it worked for me.

Jordo! · 04-29-2013, 07:18 PM

A Y pipe with a wider diameter than stock will cause hiss.

I believe the same is true when going to a H or X pipe (other than, I should expect, the OEM Nismo H).

Unresonated test pipes will hiss and then rasp on coast down.

The only way I know of to avoid it is to keep the Y pipe close to OEM diameter and to have resonated TP's.

Shadezz · 04-29-2013, 07:22 PM

Sounds like I'll be sticking with my factory TP then...I like how she sounds just with the Y-pipe and exhaust.

Dzel · 04-29-2013, 07:33 PM

She settled out today the hiss is not so loud and the exhaust sounds awesome the guys from work all complemented it. Said it sounds way better than the other set up.

Jordo! · 04-29-2013, 07:46 PM

Quote:

Originally Posted by Shadezz

factory TP then.

Do you mean the cats?

You can pick up a set of used resonated TP's from someone, and that should eliminate the rasp and 95% of the hiss on coast down anyway.

The Y pipe will probably hiss no matter what you do... I went from a wider one back to S-tune (ever so slightly wider than OEM) because I couldn't stand the hiss.

Good luck... hopefully you will either get used to it, or find a combo that works.

Dzel · 04-29-2013, 08:28 PM

Beluga got in touch with me today and I told him what was going on with the cross member he's looking into it now to see if there's anything to be done. He wants to make sure that I'm 100% satisfied

Shadezz · 04-29-2013, 10:27 PM

Quote:

Originally Posted by Jordo!

Do you mean the cats?

You can pick up a set of used resonated TP's from someone, and that should eliminate the rasp and 95% of the hiss on coast down anyway.

The Y pipe will probably hiss no matter what you do... I went from a wider one back to S-tune (ever so slightly wider than OEM) because I couldn't stand the hiss.

Good luck... hopefully you will either get used to it, or find a combo that works.

Yeah I guess I mean the factory cats....I'll be sticking with these as I'm very happy with the sound of the Beluga Racing CBE + YPIPE!!

04-28-2013, 09:42 PM	#18 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 22	Everyone that has anything other than stock components before the mid-pipe/y-pipe has the hiss. I think Motordyne found a way to mitigate it, but it is still there. I feel your pain though. I searched for exhaust leaks for weeks, lol. Just for reference, I have the Greddy 20G TT kit. The downpipes (2.5" ish) connect straight to the F.I. TT-TDX (3"). My theory is that the difference in piping size contributes to the hiss as well as any places where the pipes split (in my case). __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

04-28-2013, 10:06 PM	#20 (permalink)
Dzel A True Z Fanatic Join Date: May 2011 Location: Midland, TX Posts: 3,884 Drives: 11 370Z PW M6 Rep Power: 22	No its the one right in the middle of the car the mid pipe is right over it. __________________ 10secWS6 IF YOU CAN'T SWING IT THEN DON'T BRING IT! Check out Domestic Performance C.C.

04-29-2013, 06:03 PM	#21 (permalink)
Dzel A True Z Fanatic Join Date: May 2011 Location: Midland, TX Posts: 3,884 Drives: 11 370Z PW M6 Rep Power: 22	The exhaust is also 2.75"i forgot to tell you guys this. __________________ 10secWS6 IF YOU CAN'T SWING IT THEN DON'T BRING IT! Check out Domestic Performance C.C.

04-29-2013, 06:12 PM	#22 (permalink)
stevent85 Track Member Join Date: Sep 2012 Location: El Paso, TX Posts: 928 Drives: 2011 370Z NISMO Rep Power: 13	You have to loosen the mid pipe a little from both ends and push it up and tighten them back up....will require 2 people unless you have something you can shove vertically to hold it up while you tighten. Also a lift would help tremendously. I had the same problem with my greddy exhaust. __________________ Takeda stage 2 CAI, Z1 HFC, GREDDY Turbo TI-C

04-29-2013, 06:55 PM	#23 (permalink)
Dzel A True Z Fanatic Join Date: May 2011 Location: Midland, TX Posts: 3,884 Drives: 11 370Z PW M6 Rep Power: 22	Yeah I did that with the factory Jack __________________ 10secWS6 IF YOU CAN'T SWING IT THEN DON'T BRING IT! Check out Domestic Performance C.C.

04-29-2013, 07:09 PM	#24 (permalink)
stevent85 Track Member Join Date: Sep 2012 Location: El Paso, TX Posts: 928 Drives: 2011 370Z NISMO Rep Power: 13	Hmmm....it worked for me. __________________ Takeda stage 2 CAI, Z1 HFC, GREDDY Turbo TI-C

04-29-2013, 07:18 PM	#25 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 417	A Y pipe with a wider diameter than stock will cause hiss. I believe the same is true when going to a H or X pipe (other than, I should expect, the OEM Nismo H). Unresonated test pipes will hiss and then rasp on coast down. The only way I know of to avoid it is to keep the Y pipe close to OEM diameter and to have resonated TP's. __________________ Enjoy it. Destroy it.

04-29-2013, 07:22 PM	#26 (permalink)
Shadezz Track Member Join Date: May 2012 Location: Colorado Age: 42 Posts: 896 Drives: 2012 Nissan 370Z Rep Power: 13	Sounds like I'll be sticking with my factory TP then...I like how she sounds just with the Y-pipe and exhaust. __________________ 2012 370Z BLACK EDITION/ FLT BLK Rays / 5% 3M Tint / DW's / Z1 SS & 2 Piece Rotors Nismo S-Tune OEM / Beluga CBE & Y-PIPE / DDX370 / GTR Start .4 Fluid / NST Blue Kit

04-29-2013, 07:33 PM	#27 (permalink)
Dzel A True Z Fanatic Join Date: May 2011 Location: Midland, TX Posts: 3,884 Drives: 11 370Z PW M6 Rep Power: 22	She settled out today the hiss is not so loud and the exhaust sounds awesome the guys from work all complemented it. Said it sounds way better than the other set up. __________________ 10secWS6 IF YOU CAN'T SWING IT THEN DON'T BRING IT! Check out Domestic Performance C.C.

04-29-2013, 08:28 PM	#29 (permalink)
Dzel A True Z Fanatic Join Date: May 2011 Location: Midland, TX Posts: 3,884 Drives: 11 370Z PW M6 Rep Power: 22	Beluga got in touch with me today and I told him what was going on with the cross member he's looking into it now to see if there's anything to be done. He wants to make sure that I'm 100% satisfied __________________ 10secWS6 IF YOU CAN'T SWING IT THEN DON'T BRING IT! Check out Domestic Performance C.C.

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