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06-15-2007, 11:35 PM | #1 |
Scooby Newbie
Member#: 99205
Join Date: Oct 2005
Chapter/Region:
MAIC
Location: La Plata, MD
Vehicle:2005 Impreza WRX Blue |
Throttle body coolant mod 5-10 WHP gain
Hot coolant running through the throttle body will be directed around the throttle body instead of through it, this
bypass is for Cooler and denser air. And you will notice a warm instead of hot intake manifold when valve is closed. You can you use a plumbing shut off valve from home Depot or Lowes to toggle on and off. If you have the car in very cold climate's like Alaska you might want the valve. If the car will never see weather well below 0 degrees just reuse the 1/4 lines your be fine. All my car's have this mod and friend's car's as well never had any problems. As for decreased fuel economy I feel if you don't have a good engine tuner and worried about your MPG keep it stock.
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Last edited by ColesSTi; 02-08-2012 at 10:46 PM. Reason: Update to verify ineffectualness |
06-15-2007, 11:45 PM | #2 |
Scooby Guru
Member#: 12454
Join Date: Nov 2001
Chapter/Region:
Tri-State
Location: Vermont
Vehicle:10 Toyota Taco K8 SV650SF |
there IS definatly an old thread on this board about this mod. Its a free mod, but these guys are selling the parts you need to do it so i guess its worth it. time is a valuable asset right.. right.
Spend a few minutes searching, there IS a thread or two about this mod. Make sure these guys are selling you what you need. My guess is after you find the old threads you'll just go out and buy what you need yourself if anything. |
06-15-2007, 11:46 PM | #3 |
Scooby Specialist
Member#: 117741
Join Date: Jun 2006
Chapter/Region:
NWIC
Location: Vancouver, Washington
Vehicle:2012 STI Ltd SWP 2006 Saab 97x Arc |
Do not buy this. It is ridiculous.
You can buy the brass coupling at your local hardware store for like $3 and do the bypass yourself. Gains will be very very minimal too, not "6-8 HP at the wheels." Jesus. |
06-16-2007, 12:12 AM | #4 |
Scooby Newbie
Member#: 108222
Join Date: Feb 2006
Chapter/Region:
BAIC
Location: Lakeport, CA
Vehicle:2002 WRX stage-x Midnight Black Pearl |
hahahah look at the "dyno runs"
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06-16-2007, 06:53 AM | #5 |
Big Ron
Super Moderator Member#: 18062
Join Date: Apr 2002
Chapter/Region:
MAIC
Location: I can save you a ton of cash
Vehicle:on car parts so PM me b4 j00 buy |
www.scoobymods.com has the instructions and this will NOT net you 5-10HP. I did it because it makes sense and it cost me like $2 for the fitting.
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06-16-2007, 07:28 AM | #6 |
Scooby Specialist
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Join Date: Jul 2005
Chapter/Region:
SCIC
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Vehicle:04 bicycle! |
^^hmm live in alaska...probably shouldn't do this
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06-16-2007, 08:15 AM | #7 |
Scooby Guru
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SCIC
Location: TPE
Vehicle:03 bugeye |
lol!!! I should've thought of selling this "mod" on ebay long ago.
did this mod before, nothing on the butt dyno. |
06-16-2007, 08:18 AM | #8 |
Scooby Newbie
Member#: 99205
Join Date: Oct 2005
Chapter/Region:
MAIC
Location: La Plata, MD
Vehicle:2005 Impreza WRX Blue |
Thanks, I will pick the stuff to do install at lowes today.
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06-16-2007, 08:24 AM | #9 |
Scooby Specialist
Member#: 133936
Join Date: Dec 2006
Chapter/Region:
W. Canada
Location: In the far far north.
Vehicle:2005 WRX Wagon Stage 4 Silver |
I didn't have to buy any fittings. The factory coolant hose will reach the other connection on the block without bending or binding.
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06-16-2007, 09:05 AM | #10 |
Scooby Guru
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MWSOC
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Got pics?
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06-16-2007, 09:06 AM | #11 |
Scooby Guru
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NWIC
Location: Seattle, WA
Vehicle:2008 Mazdaspeed3 2006 Wrangler Sport |
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06-16-2007, 02:57 PM | #12 |
Scooby Specialist
Member#: 38068
Join Date: Jun 2003
Chapter/Region:
South East
Location: Miami FL
Vehicle:03 WRX Wagon |
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06-16-2007, 03:12 PM | #13 |
Scooby Specialist
Member#: 133936
Join Date: Dec 2006
Chapter/Region:
W. Canada
Location: In the far far north.
Vehicle:2005 WRX Wagon Stage 4 Silver |
Dude, you don't need to buy anything. if you're looking down at your block below the throttlebody there are too hose nipples. Simply take one of the hoses from the throttle body and connect those two coolent line hose nipples together. One of the two hoses on the throttlebody is too short. Use the other one. You can even reuse the hose clamp. Now paypal me $11.95. Gawd.
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06-16-2007, 07:18 PM | #14 |
Scooby Guru
Member#: 7327
Join Date: Jun 2001
Chapter/Region:
NWIC
Location: Seattle, WA
Vehicle:2008 Mazdaspeed3 2006 Wrangler Sport |
you can buy a couple large vacuum caps if you really want to 'cap off' the fittings on the throttle body... which really isn't a bad idea, but you can do the mod right now and then drive over to get the caps from any autozone.
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06-16-2007, 08:23 PM | #15 |
Scooby Guru
Member#: 98961
Join Date: Oct 2005
Chapter/Region:
MAIC
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Vehicle:2003 WRX Black |
Yeah, plug it back in before winter. This is a common mod on integra's and civics too.
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06-16-2007, 08:30 PM | #16 |
Scooby Guru
Member#: 7327
Join Date: Jun 2001
Chapter/Region:
NWIC
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Vehicle:2008 Mazdaspeed3 2006 Wrangler Sport |
no need to hook it back up. The car runs JUST FINE without it in subfreezing temperatures.
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06-16-2007, 09:20 PM | #17 |
Scooby Guru
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MWSOC
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No pics?
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06-16-2007, 09:34 PM | #18 |
Scooby Newbie
Member#: 99128
Join Date: Oct 2005
Location: Georgia
Vehicle:2005 SAAB 92x Black |
or plumb your washer fluid through TB to get warm water to clean windshield and maybe a few more HP gain for cooling the TB
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06-16-2007, 09:45 PM | #19 |
Scooby Guru
Member#: 78118
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Tri-State
Location: Westchester NY
Vehicle:2002 Corvette coupe 05 Legacy |
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06-16-2007, 10:15 PM | #20 |
Scooby Guru
Member#: 98961
Join Date: Oct 2005
Chapter/Region:
MAIC
Location: NOVA
Vehicle:2003 WRX Black |
You know, since the ECU can't measure a temperature difference at the manifold, it really shouldn't have any affect on power. On a Honda, the IAT sensor is after the throttle body so, the ECU can measure the difference.
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06-16-2007, 10:23 PM | #21 |
Scooby Guru
Member#: 7327
Join Date: Jun 2001
Chapter/Region:
NWIC
Location: Seattle, WA
Vehicle:2008 Mazdaspeed3 2006 Wrangler Sport |
since we are talking about heating the air prior to its entry to the combustion chamber, yes, it should make a difference.
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06-16-2007, 10:28 PM | #22 |
Scooby Specialist
Member#: 116132
Join Date: May 2006
Location: stl
Vehicle:2006 wrx tr Stage II sgm Jorge tuned -RIP :( |
I think I will do this in the next couple of days... It will not hurt anything so why not... The cooler the air charge the better so again why not!!!!
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06-16-2007, 11:12 PM | #23 |
Scooby Specialist
Member#: 19075
Join Date: May 2002
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Tri-State
Location: Long Island,NY
Vehicle:06 OBS STi MSPT Tuned Stg2 |
Someone get some pics up of this
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06-16-2007, 11:54 PM | #24 |
Scooby Specialist
Member#: 116132
Join Date: May 2006
Location: stl
Vehicle:2006 wrx tr Stage II sgm Jorge tuned -RIP :( |
When I do this I'll try to get some decent pics....
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06-17-2007, 12:08 AM | #25 |
Scooby Specialist
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