CNT header unequal length - Page 3 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

grichardt · 06-02-2015, 05:33 PM

Install went without a hiccup. Slid on slid off. Sound is not much louder than stock, I kept the stock overpipe and front pipe on.

I'll give it a couple days but overall I'm pleased.

PITTFRS · 06-02-2015, 05:50 PM

Thanks for the update! Looks like I'll be ordering one of these.

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RobertPaulson · 06-02-2015, 05:55 PM

Quote:

Originally Posted by Chad_W

So not really a merger collector, just the pipes kind of glob welded together. That's probably appropriate at this price point. I wonder if the OFT header or any of the other UEL in the $500-600 range actually use a merge collector or just do the same.

here's the merge collector from my tomei uel

RobertPaulson · 06-02-2015, 05:58 PM

Quote:

Originally Posted by themadscientist

You could build on that and argue that these things in general do not make enough difference to justify the cost.

Looking at how much people are dumping into intake and exhaust parts to pull a measly 10 or so ponies out, the whole thing seems insane.

If you are going to try build NA power, especially on a small engine, where gains are measured in single digits or fractions thereof, something small like a properly constructed collector is even more important, not less.

Do it right or don't do it.

well considering i've seen the dyno results from OFH/OFT and the torque dip is still very much present, i'm going to guess you'll notice it most where people bitch the most about the cars power band.

Teseo · 06-02-2015, 09:02 PM

Quote:

Originally Posted by grichardt

Install went without a hiccup. Slid on slid off. Sound is not much louder than stock, I kept the stock overpipe and front pipe on.

I'll give it a couple days but overall I'm pleased.

Can you provide a video? So we can judge if its loud or not.

sirsol66 · 06-02-2015, 09:31 PM

How's the bolt access for the head x header portion? Some of the aftermarket headers are absolutely horrible for this.

It looks a bit less "UEL" than the OFH; very curious to hear how it sounds!

Sabretooth · 06-02-2015, 10:29 PM

can you make a video or something . i want to know what it sounds like before i buy. does it sound anything close to the tomei?

PITTFRS · 06-02-2015, 10:30 PM

Yeah a video would be awesome!

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grichardt · 06-03-2015, 12:07 AM

Will get a video tomorrow. Definitely not loud, has the rumble I wanted. Might look at a front pipe with a resonator to get some extra volume while eliminating the last cat.

grichardt · 06-03-2015, 12:11 AM

Quote:

Originally Posted by sirsol66

How's the bolt access for the head x header portion? Some of the aftermarket headers are absolutely horrible for this.

It looks a bit less "UEL" than the OFH; very curious to hear how it sounds!

Only the middle stud on drivers side manifold is difficult (if you don't have a flex in your rachet) the rest were super easy with a 6 inch extension.

Install was a piece of cake. Took longer getting the underpanel off.

Andrew025 · 06-03-2015, 12:41 AM

Quote:

Originally Posted by themadscientist

I can't see spending money on a hack job like that at any price. Do it right or don't do it. The Tomei unit is put together properly.

http://www.ft86club.com/forums/showthread.php?t=75916

Yea... and that POS borla did pretty horrible too.

Ultramaroon · 06-03-2015, 02:16 AM

The pictures of those <cough> collectors are just sad. The reentrant turbulence caused by those protruding pipes would be significant. Sharp edges and bends all rob power. The pros go to great length to ensure a perfect match between the exhaust port and intake manifold, including the gasket itself. A well designed/manufactured collector is crucial.

It's disappointing to see what's being passed off as an "upgrade." As always, caveat emptor.

churchx · 06-03-2015, 03:05 AM

How much collectors impact header performance is yet to be measured. Or you have some data of _exactly_ the same header with only difference of different collector? It might aswell be difference of just 0.5hp, more then worth not to do it for vendor/manufacturer, if it costs extra 50-100$ in end price. Until singled out just different collector designs get tested/compared, i wouldn't blindly bash this design bit in cheaper headers.

themadscientist · 06-03-2015, 07:21 AM

At least it all lined up. Cheap stuff tends to not slide right on like that so that's a plus.

06-03-2015, 02:16 AM	#40
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1118 Post(s) Tagged: 9 Thread(s)	The pictures of those <cough> collectors are just sad. The reentrant turbulence caused by those protruding pipes would be significant. Sharp edges and bends all rob power. The pros go to great length to ensure a perfect match between the exhaust port and intake manifold, including the gasket itself. A well designed/manufactured collector is crucial. It's disappointing to see what's being passed off as an "upgrade." As always, caveat emptor. __________________ service manuals

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06-02-2015, 05:33 PM	#29
grichardt Senior Member Join Date: Jan 2014 Drives: 2013 Subaru BRZ Limited Location: Live Oak, TX Posts: 116 Thanks: 5 Thanked 59 Times in 26 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Install went without a hiccup. Slid on slid off. Sound is not much louder than stock, I kept the stock overpipe and front pipe on. I'll give it a couple days but overall I'm pleased.

06-02-2015, 09:31 PM	#34
sirsol66 Senior Member Join Date: Apr 2013 Drives: 2013 FRS- Hot Lava Location: Michigan Posts: 674 Thanks: 16 Thanked 162 Times in 115 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	How's the bolt access for the head x header portion? Some of the aftermarket headers are absolutely horrible for this. It looks a bit less "UEL" than the OFH; very curious to hear how it sounds!

06-02-2015, 10:29 PM	#35
Sabretooth Member Join Date: Dec 2014 Drives: 2015 Scion FR-S Location: Miami, FL Posts: 18 Thanks: 2 Thanked 4 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	can you make a video or something . i want to know what it sounds like before i buy. does it sound anything close to the tomei?

06-03-2015, 12:07 AM	#37
grichardt Senior Member Join Date: Jan 2014 Drives: 2013 Subaru BRZ Limited Location: Live Oak, TX Posts: 116 Thanks: 5 Thanked 59 Times in 26 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Will get a video tomorrow. Definitely not loud, has the rumble I wanted. Might look at a front pipe with a resonator to get some extra volume while eliminating the last cat.

06-03-2015, 03:05 AM	#41
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,336 Thanks: 698 Thanked 2,091 Times in 1,437 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	How much collectors impact header performance is yet to be measured. Or you have some data of _exactly_ the same header with only difference of different collector? It might aswell be difference of just 0.5hp, more then worth not to do it for vendor/manufacturer, if it costs extra 50-100$ in end price. Until singled out just different collector designs get tested/compared, i wouldn't blindly bash this design bit in cheaper headers.

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