CNT HFC = Broke after 8 months, mediocre soldering

2ndChance · 09-25-2013, 11:22 AM

Yes. It literally BROKE and the 02 sensor bung came apart leaving a huge hole.

I was driving like maniac the other day all excited on my way to install ARK exhaust in a car shop, when I dropped a couple gears and floored it in the 2nd and there was suddenly a LOUD bang followed by a incredibly loud 3-cilinder exhaust noise. My first thought was that the header has come off or something.

I managed to drive to the car shop which luckly was close enough and this is what we found hanging undearneath the car.

The passenger side HFC was coming loose as well, you could move it with your bare hands.

This problem has been present for a couple months already as I was getting more rasp every time but I thought it was normal in these hfc. Now I know there was leaks in both hfc. BTW they look really rusty and fragile when we installed the exhaust.

Anyways this is how it looks now. It does sound like rather nice and I'm waiting for new test pipes and even thou we managed to seal the hole, it was impossible to solder the bung back because the tube itself is too weak around it and most probably come off again. I will give full impressions of this exhaust when I can properly drive it with new TPs.

BTW the guys at the shop were like

when they saw my o2 bung hanging by the sensor.

Chuck33079 · 09-25-2013, 11:24 AM

That sucks. You aren't the first to have problems with their pipes. It doesn't seem like they are very good at taking care of their customers after the fact either. You may be better off buying another brand.

1st · 09-25-2013, 11:28 AM

God that is disgusting! CNT there on the 5hit list! Get Burk, Fast Intensions or Stillen. But only after you call them and talk 5hit to them.

chii370 · 09-25-2013, 11:37 AM

wow that grip looks nice with your Z lifting up its skirt like that, never liked that particular rear bumper until now. Low hanging grip with the staggered mufflers is a good mix with it.

eastwest2300 · 09-25-2013, 11:45 AM

dude thats craaaazy... wow..

LostSol · 09-25-2013, 11:47 AM

damn... i have the same exhaust with CNT resonated test pipes. i hope i dont have the same issues!

DEpointfive0 · 09-25-2013, 11:57 AM

Quote:

Originally Posted by Chuck33079

That sucks. You aren't the first to have problems with their pipes. It doesn't seem like they are very good at taking care of their customers after the fact either. You may be better off buying another brand.

Exactly, this isn't the first, and it isn't the last.
I think CNT actually solders their stuff, not welds it, lol

Chuck33079 · 09-25-2013, 11:59 AM

Quote:

Originally Posted by DEpointfive0

Exactly, this isn't the first, and it isn't the last.
I think CNT actually solders their stuff, not welds it, lol

As frequently as it breaks, I'm starting to think they use a hot glue gun.

Sh0velMan · 09-25-2013, 12:45 PM

Leuz · 09-25-2013, 02:13 PM

Wow....

Mandingo · 09-25-2013, 02:26 PM

The exact same thing has happened to others with CNT HFCs on the forum

Chuck33079 · 09-25-2013, 02:28 PM

Yep, CNT is like the Mishimoto of TPs/HFCs.

DEpointfive0 · 09-25-2013, 03:00 PM

Quote:

Originally Posted by Chuck33079

Yep, CNT is like the Mishimoto of TPs/HFCs ALLLLLLL exhaust products.

critical · 09-25-2013, 03:08 PM

same thing happened to me lol

speedfreek · 09-25-2013, 03:09 PM

Quote:

Originally Posted by 1st

God that is disgusting! CNT there on the 5hit list! Get Burk, Fast Intensions or Stillen. But only after you call them and talk 5hit to them.

That seems a bit harsh, don't you think? Why would you call and talk 5hit to Berk, FI or Stillen for CNT's mishap?

I kid I kid...

09-25-2013, 11:22 AM	#1 (permalink)
2ndChance Base Member Join Date: Feb 2011 Location: Panama Posts: 240 Drives: like he stole it Rep Power: 199	CNT HFC = Broke after 8 months, mediocre soldering Yes. It literally BROKE and the 02 sensor bung came apart leaving a huge hole. I was driving like maniac the other day all excited on my way to install ARK exhaust in a car shop, when I dropped a couple gears and floored it in the 2nd and there was suddenly a LOUD bang followed by a incredibly loud 3-cilinder exhaust noise. My first thought was that the header has come off or something. I managed to drive to the car shop which luckly was close enough and this is what we found hanging undearneath the car. The passenger side HFC was coming loose as well, you could move it with your bare hands. This problem has been present for a couple months already as I was getting more rasp every time but I thought it was normal in these hfc. Now I know there was leaks in both hfc. BTW they look really rusty and fragile when we installed the exhaust. Anyways this is how it looks now. It does sound like rather nice and I'm waiting for new test pipes and even thou we managed to seal the hole, it was impossible to solder the bung back because the tube itself is too weak around it and most probably come off again. I will give full impressions of this exhaust when I can properly drive it with new TPs. BTW the guys at the shop were like when they saw my o2 bung hanging by the sensor.

09-25-2013, 11:24 AM	#2 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	That sucks. You aren't the first to have problems with their pipes. It doesn't seem like they are very good at taking care of their customers after the fact either. You may be better off buying another brand. DEpointfive0 likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

09-25-2013, 11:45 AM	#5 (permalink)
eastwest2300 A True Z Fanatic Join Date: May 2010 Location: South FL Posts: 90,817 Drives: '16QX70/'21 Supra3.0 Rep Power: 2684549	dude thats craaaazy... wow.. __________________ Infiniti QX70 & Toyota Supra 3.0 Premium

09-25-2013, 11:47 AM	#6 (permalink)
LostSol Premium Member Join Date: Jan 2013 Location: Orlando Posts: 1,021 Drives: 2010 370z 40th A.E. Rep Power: 15	damn... i have the same exhaust with CNT resonated test pipes. i hope i dont have the same issues! __________________ 2010 Nissan 370Z 40th Anniversary Edition #762/1000 \| Forgestar \| Michelin \| Swift \| TRS \| Z Speed \| ARK \| Z1 \| Hawk \| CFE \| Evo-R \| GTMat \| Stillen \| Seibon \| Whiteline \| Pioneer \|

09-25-2013, 12:45 PM	#9 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 20	__________________ Buy My Car! \| Build Thread

09-25-2013, 11:28 AM	#3 (permalink)
1st A True Z Fanatic Join Date: Jul 2012 Location: I 80 Biz U.S. 50 Posts: 1,708 Drives: Platinum Z Rep Power: 1615	God that is disgusting! CNT there on the 5hit list! Get Burk, Fast Intensions or Stillen. But only after you call them and talk 5hit to them.

09-25-2013, 11:37 AM	#4 (permalink)
chii370 Track Member Join Date: Jul 2010 Location: . Posts: 642 Drives: . Rep Power: 15	wow that grip looks nice with your Z lifting up its skirt like that, never liked that particular rear bumper until now. Low hanging grip with the staggered mufflers is a good mix with it.

09-25-2013, 02:13 PM	#10 (permalink)
Leuz Track Member Join Date: Nov 2012 Location: NorCal Posts: 555 Drives: Bunny Rep Power: 13	Wow.... __________________ 2013 PW 370Z Touring+Sport, NAV Tint 35% side, 18% back \| RJM clutch pedal \| ZSpeed SS lines \| Stillen Gen3 CAI \| Fast Intentions HFC and TDX 12'' CF CBE \| UpRev

09-25-2013, 02:26 PM	#11 (permalink)
Mandingo Track Member Join Date: Nov 2010 Location: Dallas Posts: 624 Drives: '10 370z 6spd Rep Power: 3370	The exact same thing has happened to others with CNT HFCs on the forum __________________ some mods

09-25-2013, 02:28 PM	#12 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	Yep, CNT is like the Mishimoto of TPs/HFCs. DEpointfive0 likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

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