COBB Silicone Intake Tubing

spearfish25 · 02-03-2010, 01:20 PM

Anyone tried the COBB Silicone intake tubing? It looks like it would improve airflow by removing the corrugated portion of the stock intakes. I'm not sure if this is the real restrictive element though. I'd love to see some dyno numbers. They're relatively inexpensive, but are a decent down payment on a real CAI. Thoughts?

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vipor · 02-03-2010, 01:24 PM

I want to see before and after pics installed

Modshack · 02-03-2010, 01:57 PM

Nice find! This woulda made my job a LOT easier and only a few bucks more than my fabbed up hoses. These are a no brainer...
We're gonna go this way when I build the intake for Zpirates car..

vipor · 02-03-2010, 01:58 PM

Need Red Hoses for us NISMO guys too!

spearfish25 · 02-03-2010, 03:50 PM

So, Modshack, you think they are worth the $125 and potentially negate the need for a full CAI? Obviously they don't make the intake air 'cold', but the stock airboxes do a better job of cool air intake than any of the short tube options out there. My guess is these hoses may make a measurable dyno gain.

roplusbee · 02-03-2010, 04:41 PM

I was wondering about those myself. I don't remember seeing color choices, but I could be mistaken.

m4a1mustang · 02-03-2010, 04:43 PM

I'd be interested to see if there are any gains if you replaced those sections of the stock intake with this.

From what we've seen so far is that the stock intakes flow very well up until the very top of the RPM range... that's where the LT intakes actually gain over stock. I don't know if those sections of the pipe become a restriction or if it's something else, but it's pretty clear that the stock units are pretty good.

Modshack · 02-03-2010, 05:33 PM

Quote:

Originally Posted by spearfish25

So, Modshack, you think they are worth the $125 and potentially negate the need for a full CAI?

Well....I don't think they are a substitution for a well engineered aftermarket system, but just having a larger ID crossection and a smoothed interior has to help with flow. I'm betting the Silicone will heat up less than the metal typically used in most CAI's. I wouldn't expect any measurable dyno gains outside of the statistical differences expected from run to run.

Quote:

Originally Posted by m4a1mustang

I'd be interested to see if there are any gains if you replaced those sections of the stock intake with this.

From what we've seen so far is that the stock intakes flow very well up until the very top of the RPM range... that's where the LT intakes actually gain over stock. I don't know if those sections of the pipe become a restriction or if it's something else, but it's pretty clear that the stock units are pretty good.

Yes, I agree that the stockers would seem to be pretty good. They match my system (and the Stillen G3) for intake temp control which is a good thing. A Cone may flow a bit better than a flat panel and Box...Regardless, smooth hose downstream of the filter should help. Not enough to make a Kick-*** difference, but I believe that enough small, incremental improvements ultimately result in nice overall performance gains.

TARDCORE · 02-03-2010, 10:34 PM

Everytime I see these I always think why not at least buy a short ram but since there are 2 intake on this car the money adds up quick.

spearfish25 · 02-03-2010, 11:37 PM

Short rams pull air from the engine bay. The stock boxes are nicely designed to pull air from the radiator. Pull out the drop-in filter and have a look. The stock system is better than any short rams you can find.

Philipp · 02-04-2010, 09:32 PM

Quote:

Originally Posted by spearfish25

Short rams pull air from the engine bay. The stock boxes are nicely designed to pull air from the radiator. Pull out the drop-in filter and have a look. The stock system is better than any short rams you can find.

Minicobra1 · 02-04-2010, 09:48 PM

What is the reason for most cars having the corrugated tubes, ease of fitment or does this help break up the air flow, kind of like how a spoiler will decrease drag. Maybe it increases the air flow, I'm no engineer, but it's not like it would be any more expensive for Nissan just to use smooth hoses there. Most vacuum cleaner hoses are corrugated, got to be a reason.

Modshack · 02-04-2010, 10:00 PM

Quote:

Originally Posted by Minicobra1

got to be a reason.

Flexibility I'd guess..Most cars use a flex pipe between the engine that moves on its mounts and the airbox that is usually hard mounted to the chassis..

02-03-2010, 01:20 PM	#1 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	COBB Silicone Intake Tubing Anyone tried the COBB Silicone intake tubing? It looks like it would improve airflow by removing the corrugated portion of the stock intakes. I'm not sure if this is the real restrictive element though. I'd love to see some dyno numbers. They're relatively inexpensive, but are a decent down payment on a real CAI. Thoughts? COBB Tuning Post MAF Hose - THMotorsports - Lowest Price Parts HKS Exhaust Apexi World Sport Koni Seibon Carbon Fiber ACT Exedy Clutch Skunk2 CobbTuning.com - Post MAF Hose __________________ 2013 Cadillac V-Wagon, RIP Z

02-03-2010, 01:24 PM	#2 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	I want to see before and after pics installed __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

02-03-2010, 01:57 PM	#3 (permalink)
Modshack A True Z Fanatic Join Date: Mar 2009 Location: Greenville NC Posts: 2,883 Drives: 370Z Sport Rep Power: 976	Nice find! This woulda made my job a LOT easier and only a few bucks more than my fabbed up hoses. These are a no brainer... We're gonna go this way when I build the intake for Zpirates car.. __________________ Steal my car! (SOLD)...Now Porsche Cayman S Oil Cooler DIY: Here! Last edited by Modshack; 02-03-2010 at 02:00 PM.

02-03-2010, 01:58 PM	#4 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	Need Red Hoses for us NISMO guys too! __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

02-03-2010, 03:50 PM	#5 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	So, Modshack, you think they are worth the $125 and potentially negate the need for a full CAI? Obviously they don't make the intake air 'cold', but the stock airboxes do a better job of cool air intake than any of the short tube options out there. My guess is these hoses may make a measurable dyno gain. __________________ 2013 Cadillac V-Wagon, RIP Z

02-03-2010, 04:41 PM	#6 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 23	I was wondering about those myself. I don't remember seeing color choices, but I could be mistaken. __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

02-03-2010, 04:43 PM	#7 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	I'd be interested to see if there are any gains if you replaced those sections of the stock intake with this. From what we've seen so far is that the stock intakes flow very well up until the very top of the RPM range... that's where the LT intakes actually gain over stock. I don't know if those sections of the pipe become a restriction or if it's something else, but it's pretty clear that the stock units are pretty good. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-03-2010, 10:34 PM	#9 (permalink)
TARDCORE Enthusiast Member Join Date: Jul 2009 Location: San Diego Posts: 410 Drives: 2010 Solid Red 370Z Rep Power: 16	Everytime I see these I always think why not at least buy a short ram but since there are 2 intake on this car the money adds up quick. __________________ XBL:EVENTYDE

02-03-2010, 11:37 PM	#10 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	Short rams pull air from the engine bay. The stock boxes are nicely designed to pull air from the radiator. Pull out the drop-in filter and have a look. The stock system is better than any short rams you can find. __________________ 2013 Cadillac V-Wagon, RIP Z

02-04-2010, 09:48 PM	#12 (permalink)
Minicobra1 A True Z Fanatic Join Date: Nov 2008 Location: Orange County, CA. Posts: 1,205 Drives: 370Z Tour, Spt, 6mt Rep Power: 645	What is the reason for most cars having the corrugated tubes, ease of fitment or does this help break up the air flow, kind of like how a spoiler will decrease drag. Maybe it increases the air flow, I'm no engineer, but it's not like it would be any more expensive for Nissan just to use smooth hoses there. Most vacuum cleaner hoses are corrugated, got to be a reason. __________________ 370z Tour\| Spt Pack\|Navi\|BERK CBE\|Berk HFC's\| Eibach Springs\| Hotchkis Sway Bars\|SPC Camber Arms\|15mm Ichiba Wheel Spacers\| 19"Factory Nismo Wheels-Matt Black\|Stop Tech Rotors\|TWM Shifter\|3M Tint\|Black Fangs\|Black Rear Valance\|JDM Fog Light\| MY BAND-www.myspace.com/petroleum Last edited by Minicobra1; 02-04-2010 at 09:51 PM.

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