home made cold air - LS1GTO.com Forums

Vendors


Go Back   LS1GTO.com Forums > GTO Tech > Tech Lounge

Reply
 
Thread Tools Rate Thread
Old 01-05-2013, 08:16 PM   #1
gto4gbr
Registered User
 
2006 GTO Owner

Join Date: Jan 2013
Location: fort polk
Posts: 1


Offline
Lightbulb home made cold air

was thinking about cutting the stock air intake off and then just running a filter a couple inches off the intake anyone done this or would this be a bad idea? i was thinkin to try to make it like the vararam intake
  Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-05-2013, 08:22 PM   #2
HalfWayOutTheDoor
Elgin Goat
 
HalfWayOutTheDoor's Avatar
 
2004 GTO Owner

Join Date: Dec 2010
Location: Elgin, Texas
Posts: 172


Offline
Mock it up, post pics and results.
__________________
Elgin A4 Goat. ARH Long tube headers, High flow cats, Magnaflow cat back, Lingenfelter CIA, P&P TB, Reckart performance tuned, Pedders Sports Ryder. 335hp / 348tq.
  Reply With Quote Quick reply to this message
Old 01-05-2013, 08:23 PM   #3
Cwarta
MO POWA!
 
Cwarta's Avatar
 
2004 GTO Owner

Join Date: Oct 2011
Location: Elm Creek Ne
Posts: 1,702


Offline
Lots of hot air is in your future :/
__________________
2004 GTO M6 QSM
416 forged stroker lq9 block - Callie's crank - eagle rods
Custom FTI cam, Vic Jr, borla, Tick lvl 2 T56
McLeod rst - prostars - tires - Qa1 coil overs
Custom 4 link 9" SRA

1970 SS Nova - 362ci swapped Lt1 - Cam- t56 - 3:73's - borla - 2,800lbs
  Reply With Quote Quick reply to this message
Old 01-05-2013, 08:24 PM   #4
xtaspeed05
Abracadabra Holmes
 
xtaspeed05's Avatar
 
2005 GTO Owner

Join Date: Aug 2008
Location: San Jose, CA
Posts: 4,593
Premium Member


Online
__________________

"Let's see if these bastards can do 90..."

2005 gto MBM M6 1 of 566

Stock~315/317~13.35@104.85~2.09 60'

Go Fast-Vararam|Ported Intake & T.b.|Jba shorties w/gutted cats|Tq.V2 cam 113lsa|Asp udp|LS7 clutch|Lss|S.S. clutch line|X-pipe|4" magnapacks|Dyno tuned|420/393

Show-Sap front fascia & grill's|Klearz markers|06 tails|Jhp V1 lip spoiler|18X8.5 ADR's

Best E.T.
1/8 mile~7.74@92.13
1/4 mile~11.99@115.46~1.82 60'on Nitto Dr's~D.A. 250ft.
Best 60ft. 1.78
Curb weight ~ 3620lbs.
  Reply With Quote Quick reply to this message
Old 01-05-2013, 08:24 PM   #5
Tyler Z28
Bangin Gears
 
Tyler Z28's Avatar
 
2004 GTO Owner

Join Date: Mar 2012
Location: Clovis, Ca
Posts: 337


Offline
Go with a svede. There are plenty of used ones to be had on in the for sale section. I got a used one with a small (fixable) crack at the opening for under $200. It's much better than the stock setup and your proposed home made intake, I had the same aspirations of making my own, but I caved and bought a proven intake.
__________________
2004 GTO M6, 243 heads, 224/228 TSP cam, Svede intake, JBA Shorty's Catless Mids 383HP/376TQ
Whiteline RR bushings, Rear Sub frame, Diff inset and trans insert
  Reply With Quote Quick reply to this message
Old 01-05-2013, 08:28 PM   #6
HalfWayOutTheDoor
Elgin Goat
 
HalfWayOutTheDoor's Avatar
 
2004 GTO Owner

Join Date: Dec 2010
Location: Elgin, Texas
Posts: 172


Offline
not to sidetrack but.. xtaspeed05 ,that's a great looking car!
  Reply With Quote Quick reply to this message
Old 01-05-2013, 10:37 PM   #7
dreadpirateroberts
ಠ_ಠ
 
dreadpirateroberts's Avatar
 
2005 GTO Owner

Join Date: Sep 2006
Location: NWI
Posts: 21,274


Offline
Quote:
Originally Posted by gto4gbr...View Post
was thinking about cutting the stock air intake off and then just running a filter a couple inches off the intake anyone done this or would this be a bad idea? i was thinkin to try to make it like the vararam intake

  Reply With Quote Quick reply to this message
Old 01-05-2013, 10:42 PM   #8
04QSMGoat
Registered User
 
04QSMGoat's Avatar
 
2004 GTO Owner

Join Date: Apr 2012
Location: Orange County, CA
Posts: 743


Offline
No. The only "homemade" intake I would bother tackling is a hardcore intake. I pieced mine together with couplers and piping I had for around $80, all I paid for was the holesaw, arbor bit for the saw and the Spectre filter. Even then this is temporary because I know it's not as good as a Svede or Vararam. Honestly OP just buy a Vararam. New they are under $250, used they are around $150
__________________
2004 QSM GTO: Forged 347, bolt ons, stalled auto PHK
  Reply With Quote Quick reply to this message
Old 01-06-2013, 07:41 AM   #9
batboy
cave dweller
 
batboy's Avatar
 
2004 GTO Owner

Join Date: Feb 2005
Location: Kansas
Posts: 7,237


Offline
Let the ghetto mods begin.
__________________
2004 torrid red with red interior A4 GTO (1 of 499)

TR-230/236 cam/TEA ported Trick Flow 215 heads/4" CAI/100mm MAF/ported FAST 90/Kooks/Magnaflow
Performabuilt trans/3200 stall/Truetrac/Gforce1320 half shafts, stubs, CF driveshaft/SSR wheels/SNL tune
  Reply With Quote Quick reply to this message
Old 01-06-2013, 08:06 AM   #10
Audacious Nick
Banned
 
2004 GTO Owner

Join Date: Apr 2011
Location: San Antonio, TX
Posts: 2,525


Offline
Did you own a Honda Civic, or something similar, before this?
Why? Have you done extensive research to see if this will be beneficial? Or are you doing this because it will look cool? Hint, having a half-ass setup like this will look like shit, and will probably be detrimental to performance, due to the massive amounts of hot air you'll be sucking in.
I'm sure Autozone would love you, though.
  Reply With Quote Quick reply to this message
Old 01-06-2013, 08:25 AM   #11
high school goat
Retarded Spark
 
high school goat's Avatar
 
2004 GTO Owner

Join Date: Jan 2008
Location: Charlotte N.C.
Posts: 2,809


Offline
Send a message via AIM to high school goat
__________________
SOLD
  Reply With Quote Quick reply to this message
Old 01-06-2013, 08:27 AM   #12
paulsz28
Bolt Extractor
 
paulsz28's Avatar
 
2004 GTO Owner

Join Date: Mar 2009
Location: Goose Creek, South Carolina
Posts: 1,421


Offline
OP,
A filter right off the intake will just guzzle the hot air coming off the radiator. Your car wants dense, cold air to make power - not the hot, massless volume right behind the radiator. PV=nRT, right? Hot ambient air will have less oxygen than cold ambient air of the same volume. The more oxygen you put into your engine, the more fuel the PCM will spray, and the more power the engine will produce (ZOMG, what a hideously gross oversimplification).

You have to get your air intake point AWAY FROM (a la "hardcore intake") or IN FRONT OF (a la Svede or Vararam) the radiator to take in "cold" air, which is really just air that's not as smoking hot as the radiator and rest of the engine bay. THAT should be your goal. Why would you want to suck in hot engine bay air anyway . . .
__________________
2004 PBM M6|109K Miles|Work Commuter
WCS Flat Splitter|Painted Shifter Knob|PDed Lugnut Caps|Llumar 26% Tint
NGK TR5IX|MSD 8mm|180 T-stat + TB bypass|Svede OTRCAI + Omega
Lovells Front RR Bushings + Strut Mounts|Lovells 0-Drop Springs|KYB Shocks/Struts
05/06 Calipers|DBA Standard S/D Rotors|Hawk PC Pads
Kooks SS Headers + O/R Mid-pipes|Stock Asymmetric Mufflers
HSC Stock Height Motor Mounts
Torco RGO|ATE Super Blue Brake/Clutch
  Reply With Quote Quick reply to this message
Old 01-06-2013, 03:36 PM   #13
superchargedgp
The Grinch
 
superchargedgp's Avatar
 
Other Holden/HSV

Join Date: Oct 2007
Location: CHICAGO
Posts: 2,769


Offline
why dont you just mount the filter directly onto the throttle body. ram air bro
  Reply With Quote Quick reply to this message
Old 01-06-2013, 04:07 PM   #14
xtaspeed05
Abracadabra Holmes
 
xtaspeed05's Avatar
 
2005 GTO Owner

Join Date: Aug 2008
Location: San Jose, CA
Posts: 4,593
Premium Member


Online
Quote:
Originally Posted by HalfWayOutTheDoor...View Post
not to sidetrack but.. xtaspeed05 ,that's a great looking car!

Thank you very very much halfwayoutthedoor !! This picture really brings out the mbm imo.
  Reply With Quote Quick reply to this message
Old 01-07-2013, 03:26 AM   #15
87LC2
Dr. Mantis Toboggan
 
87LC2's Avatar
 
2006 GTO Owner

Join Date: Sep 2006
Location: Pennsyltucky
Posts: 12,991
Premium Member


Offline
Quote:
Originally Posted by gto4gbr...View Post
was thinking about cutting the stock air intake off and then just running a filter a couple inches off the intake anyone done this or would this be a bad idea? i was thinkin to try to make it like the vararam intake

Cold air's out front, brah.

__________________
The Anti-Prius™
2008 JSB/Black M6 1LT
Kooks, catless, NPP
Vararam
  Reply With Quote Quick reply to this message
Old 01-07-2013, 04:24 AM   #16
GTO Drifter
DO A BARREL ROLL!!!!!
 
GTO Drifter's Avatar
 
2006 GTO Owner

Join Date: May 2008
Location: Warren MI
Posts: 952


Offline
welcome to sickville, population ^^^this guy
__________________
http://www.
Mod List: ..... Driver
Note: This post may contain misspellings, grammatical errors, disorganized sentence structure, or may entirely lack a coherent theme. These elements are natural to the process of writing, and will only add to the overall beauty of the post.
  Reply With Quote Quick reply to this message
Old 01-07-2013, 05:25 AM   #17
CrAzYGOAT
nothing witty today
 
CrAzYGOAT's Avatar
 
2004 GTO Owner

Join Date: Oct 2007
Location: Upper Marlboro, MD
Posts: 1,261


Offline
Quote:
Originally Posted by GTO Drifter...View Post
welcome to sickville, population ^^^this guy

LOL
__________________

STOLEN
2004 PBM LS1 M6
Kooks Headers & Street Screamers - Monster stage 1 with tick performance master
Hinson engine mounts - speed bleeder - ASP UD pulley - 3.91 w/eaton tru trac and Harrop cover - BP shifter
RAMJET otrcai - LSXr/102 Big Mouth - Billet Rails - custom coolant crossover
BC coilovers, 19" TSW Cadwells 45mm on f-245/35 r-285/35 - James Biz catch can
JB blacked out arrows and side badges - Mav man spolier and diffuser - Custom suede interior and trim
  Reply With Quote Quick reply to this message
Old 01-07-2013, 06:11 AM   #18
05 red tomcat
bolt-ons =11.52
 
05 red tomcat's Avatar
 
2005 GTO Owner

Join Date: May 2005
Location: southern virgina
Posts: 1,659


Offline
WELL my cai is a true power builder, true ram air ,but it goes against everyones best guess 3 90 deg turns and 5 feet long.
but my car does hold the bolt on record ,so im doing something right.
__________________
05 torred red black int auto
(1 of 400)
ngk plugs tr55 ,kn drop in ,drag bags
slp loud mouth II cat back
b&m trans cooler
homemade cai 4" and lots of (un) bolt ons
hotchkis bars
harrop x-member bushings,and harrop cover
noltec bushings every where else
driveshaft shop one piece alumnium
kooks 1 7/8s headers
fti 3600 stall , fast 92 intake
tuned by mayhem motorsports in raligh nc
  Reply With Quote Quick reply to this message
Old 01-07-2013, 06:26 AM   #19
xtaspeed05
Abracadabra Holmes
 
xtaspeed05's Avatar
 
2005 GTO Owner

Join Date: Aug 2008
Location: San Jose, CA
Posts: 4,593
Premium Member


Online
Quote:
Originally Posted by 05 red tomcat...View Post
WELL my cai is a true power builder, true ram air ,but it goes against everyones best guess 3 90 deg turns and 5 feet long.
but my car does hold the bolt on record ,so im doing something right.

Any pics posted of it ?
  Reply With Quote Quick reply to this message
Old 01-07-2013, 08:49 AM   #20
05 red tomcat
bolt-ons =11.52
 
05 red tomcat's Avatar
 
2005 GTO Owner

Join Date: May 2005
Location: southern virgina
Posts: 1,659


Offline
no most of it is hidden. it is a hard core style ,but goes a lot further.
4" pvc ,i only use the full system at the track ( no filter )
  Reply With Quote Quick reply to this message
Old 01-07-2013, 09:34 AM   #21
batboy
cave dweller
 
batboy's Avatar
 
2004 GTO Owner

Join Date: Feb 2005
Location: Kansas
Posts: 7,237


Offline
A homemade CAI is doable, you just need to make it so you don't pull in hot air. Do a search on "hardcore CAI" and you'll find examples of how to route air from outside the engine compartment. I did a homemade 4" CAI borrowing SNL's design and utilized a LPE heatshield I had leftover. Since the pic was taken, I have insulated and sealed the heatshield better. Again, I'm pulling in outside air because hot air causes the IAT and ECU to pull timing to compensate for the less dense air charge.

  Reply With Quote Quick reply to this message
Old 01-07-2013, 09:44 AM   #22
JNR
Quidditas
 
JNR's Avatar
 
2004 GTO Owner

Join Date: May 2006
Location: SoCal
Posts: 13,289


Online
PVC is not something you want to use (gets brittle, emits gasses), but ABS is alright. Being it's a non-pressure application you may be alright, but don't ever use it under pressure, even with the low psi the FI systems produce on these cars.

I know people will say they've done it and it's alright and all, but it is not a good idea, fwiw.
__________________
2004 Pontiac GTO - new DD, yay!
2007 Cadillac CTS-V - Sold
2006 Pontiac GTO - Sold
1992 Mitsubishi Galant VR4
1971 Chevy Malibu "383" <--need to get this back together!
  Reply With Quote Quick reply to this message
Old 01-08-2013, 04:22 PM   #23
Audacious Nick
Banned
 
2004 GTO Owner

Join Date: Apr 2011
Location: San Antonio, TX
Posts: 2,525


Offline
If you have a k&n, you can also cut a hole in the metal below the filter, then use some duct hosing and route it up to the hole, and have the other end below the car, angled so it routes the air into it. This would bring cooler air up into the filter area, without the extra bends.
  Reply With Quote Quick reply to this message
Old 01-08-2013, 04:49 PM   #24
mopardakota287
Registered User
 
mopardakota287's Avatar
 
2005 GTO Owner

Join Date: Jan 2009
Location: Right over there
Posts: 108


Offline
Quote:
Originally Posted by 87LC2...View Post
Cold air's out front, brah.




__________________
Quote:
Originally Posted by MuhThugga...View Post
The 2010 GT owners got 04 GTOed big time.

  Reply With Quote Quick reply to this message
Old 01-08-2013, 07:49 PM   #25
UnRelentLess
"Legen― wait for it... Dary!"
 
UnRelentLess's Avatar
 
2004 GTO Owner

Join Date: Sep 2008
Location: NJ
Posts: 1,586


Offline
Quote:
Originally Posted by 04QSMGoat...View Post
No. The only "homemade" intake I would bother tackling is a hardcore intake. I pieced mine together with couplers and piping I had for around $80, all I paid for was the holesaw, arbor bit for the saw and the Spectre filter. Even then this is temporary because I know it's not as good as a Svede or Vararam. Honestly OP just buy a Vararam. New they are under $250, used they are around $150


Really? No homemade C6 intake love?

Quote:
Originally Posted by gto4gbr...View Post
was thinking about cutting the stock air intake off and then just running a filter a couple inches off the intake anyone done this or would this be a bad idea? i was thinkin to try to make it like the vararam intake

Define bad idea.
Vararam with no heat shield = bad idea

Just do as I've done, hack up a c6 intake, slap it on, and be done with it
__________________
11 second club
╬╬╬ Tuned by ╬╬╬

Last edited by UnRelentLess; 01-08-2013 at 07:53 PM.
  Reply With Quote Quick reply to this message
Old 01-08-2013, 08:12 PM   #26
dreadpirateroberts
ಠ_ಠ
 
dreadpirateroberts's Avatar
 
2005 GTO Owner

Join Date: Sep 2006
Location: NWI
Posts: 21,274


Offline
^^^ this!
  Reply With Quote Quick reply to this message
Old 01-08-2013, 08:51 PM   #27
04QSMGoat
Registered User
 
04QSMGoat's Avatar
 
2004 GTO Owner

Join Date: Apr 2012
Location: Orange County, CA
Posts: 743


Offline
Quote:
Originally Posted by UnRelentLess...View Post
Really? No homemade C6 intake love?



Define bad idea.
Vararam with no heat shield = bad idea

Just do as I've done, hack up a c6 intake, slap it on, and be done with it

I didn't mention yours because IIRC you have a shorter radiator that allowed you to do this in the first place
  Reply With Quote Quick reply to this message
Old 01-13-2013, 09:51 AM   #28
ls1fan74
Totally Registered User
 
ls1fan74's Avatar
 
2004 GTO Owner

Join Date: Jun 2009
Location: Capital Region, NY
Posts: 923


Offline
Maybe he meant over the radiator, and cutting or eliminating the radiator shroud, kind of like the Svede?

editL Just saw OP has an 06, not sure how different the cover is from the 2004
  Reply With Quote Quick reply to this message
Old 01-13-2013, 04:24 PM   #29
UnRelentLess
"Legen― wait for it... Dary!"
 
UnRelentLess's Avatar
 
2004 GTO Owner

Join Date: Sep 2008
Location: NJ
Posts: 1,586


Offline
Quote:
Originally Posted by gto4gbr...View Post
was thinking about cutting the stock air intake off and then just running a filter a couple inches off the intake anyone done this or would this be a bad idea? i was thinkin to try to make it like the vararam intake

What you mention is not detailed enough. Figure I'ld give you a serious answer.

If you ran a straight tube directly off the intake, it could only be as long as 5 inches before it hit the hood/radiator. You don't want the MAF being TOO close to the throttle body unless you plan on a different type of MAF or speed density tune.

Also not many filters / or piping get narrow enough to fit between the hood and the radiator. Attaching a filter before the radiator for a "short air intake" is pointless unless you develop a way to prevent the filter from sucking in the hot engine air.

The goal is to get air from outside the engine bay hence "Svede intake" is amongst the best design. If you want to spend alot of time building your own intake to simply say you built your own (as I've done), focus on how to get an intake to get past the radiator.

Things to remember when building your own intake:
1. bends restrict airflow
The less bends / elbows, the better
2. "Cold Air" Simply means air that is not heated by the engine heat. "Cold air is more dense than hot air hence Cold air = more power.
3. Regardless of what air you have the engine sucking in, the IAT (intake air temperature) sensor needs to read what temperature that air is or it will tell your motor to reduce timing when it shouldn't resulting in a loss of power. (Or if you simply relocate the sensor and/or by-pass it so it reads cold air constantly, then the computer won't compensate for the air temperature changes as you drive it and it won't reduce timing on hot days and you'll be on here later crying about how your engine blew up.)

Achieve those 3 goals and people will agree / approve of your design.

4. Is form but that comes last. Function > Form to most, unless you have the cash to spend.

Best of luck!


Here's an example of the intake I built.

  Reply With Quote Quick reply to this message
Old 01-13-2013, 06:27 PM   #30
Ironmn715
Premium Member
 
2004 GTO Owner

Join Date: Jan 2013
Location: Agawam MA
Posts: 388
Premium Member


Offline
What is the filter number you are using here? I want to fab my own out of some 321 SS sheet I have kicking around.

'Moe
  Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the LS1GTO.com Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -8. The time now is 08:28 PM.




Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©2003-2008, LS1GTO.com
Site Banner Design ©2005-2007, Cylosoft

LS1GTO.com is not affiliated with General Motors Corp.