86-93 MUSTANG Throttle Body Bypass Kit +8HP

lucheski · 06-09-2004, 10:59 AM

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=2481588992&catego ry=33558

I saw this on ebay and I am wondering if it really works. Has anyone tried it?

HOW IT WORKS (?)
How this mod works is that manufacturer's run a coolant line to and from your factory throttle body. After driving for awhile, your coolant will reach temperatures of up to 210F ...this hot coolant running through the throttle body heats up the air entering the engine and hurts performance. This can hurt your drag racing quarter mile times by as much as 3 tenths. When you bypass the coolant lines to and from your throttle body, it will keep the air entering the engine up to 40 degrees cooler giving your engine its maximum performance output.

82 GT · 06-09-2004, 02:37 PM

I've heard of that theory too. It sounds reasonable....

GhettoPop · 06-09-2004, 03:50 PM

why does coolent run through the TB? and what does this system do, bypass the entire colling system and just run hose from one end on the TB to the other in a closed loop?

GhOsT6_9 · 06-09-2004, 03:57 PM

The reasoning for the coolant going into the TB is for in the cold climate areas, such as in Canada or Northern US where the temps drop to at or below freezing. The coolant flows into the TB and keeps the TB from being froze shut.

Although if you dont' live in a cold area, or dont' do winter driving then this does nothing for you but make incoming air warm up, by heating up the TB.

~The Jester~ · 06-09-2004, 05:05 PM

Yes the coolant runs through the TB for colder climate areas. Think of it as a choke for fuelie motors. I have seen this mod, and yes it does work. However, I'd be very surprised if it knocked off THREE TENTHS! It does work though.

Capri306 · 06-10-2004, 05:24 AM

Coolant lines pass through the EGR spacer on a 5.0L to keep that area's temperatures under control, as well as a Michigan-proofing. I've seen people block them off, and it's okay on an application where EGR is disabled. However, the intake temperature will skyrocket without the coolant flowing through if it is working as designed.

Seriously, I don't think this will do $hit for any more power or fuel economy. At the rate the air is flowing past the throttle body, just how much heat do you think is being transferred to the intake charge? At wide open throttle, most of the air is not contacting the throttle body's bore, either. Come on, let's be realistic. Even in the days of carburetors, that heat stove on the exhaust manifolds could hardly get the intake stream above ~150F. Even at a lower temperature, the air would be warmed up by the time it gets to the plenum and runners from ordinary engine heat.

Ackbar00 · 06-10-2004, 06:02 AM

Do it yourself for $3. There are two line that go inot the TB, one in front, one in back. Both lines plug into the black coolant tube that feeds into the firewall. Just buy 2 caps that fit over those nubs on the black coolant tube, and clamp them down. Your done.

BTW - 8Hp gain from this is bulllshit.

302 LX Eric · 06-10-2004, 07:56 AM

If you're still running the factory EGR, I would just leave the coolant lines alone.

E

bigred90gt · 06-10-2004, 08:06 AM

Have you ever touched the upper intake manifold after you have been running your car? I guarantee between that, and the heat generated in the lower intake manifold by your heads, the coolant lines in the TB are doing nothing to heat your intake charge that the intake man isnt doing. Its a waste of money. But as already stated, if you feel you must do it, it can be dont very cheap. Definately not worth whatever you will pay for a kit on ebay. BTW - your link doesnt work. You have to put the URL in the second window when inserting a hyperlink. The first window is for the text you want to the link to appear as.

speedytang · 06-11-2004, 12:45 AM

Just use a aluminum brake line and hook the lines together and bypass the EGR. Just like the Cobra intake does.

Jeff Chambers · 06-11-2004, 07:46 AM

Coolant loop to the TB is not for cold weather operation. Think about it, when the car's cold, the coolant is cold so there is no 'choke' effect. Coolant is routed to the TB to purposely raise the intake air charge temperature for emission purposes. By raising the air charge temperature, the NOx emissions are reduced. NOx is the most harmful of the products of combustion.

Eliminating both the coolant loop and EGR function are of good benefit for all-out performance. As someone else mentioned, both of these work to increase the intake temperature and thereby reduce air charge density and resulting HP. If you're not too emission/EPA-minded, block the coolant path and completely remove the EGR for added performance. Also install a phenolic spacer and use freeze plugs to block the EGR ports between the upper/lower intakes. All this will lead to a cooler intake plenum and result in a more dense intake charge and increased HP. The EGR valve is closed at WOT, so it's not dumping exhaust stream when you're on it, but the rest of the time it is partially open and heating your intake up while you cruise around town, up to staging or back from a run. Eliminate EGR all-together. Have a chip burnt to shut the EGR function off in the computer and you won't get the related codes when you check them.

stanger9219 · 06-14-2004, 01:19 AM

Its more of an "in theory" mod. I did it with copper tubing surrounded by a rubber hose. I think the 8 hp, 3 tenths thing is just to get people to by the cheap thing. Dont waste money, make one yourself if you really want to do it.

06-09-2004, 10:59 AM	#1
lucheski Registered Member Join Date: May 2004 Location: Tennessee Posts: 21	86-93 MUSTANG Throttle Body Bypass Kit +8HP http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=2481588992&catego ry=33558 I saw this on ebay and I am wondering if it really works. Has anyone tried it? HOW IT WORKS (?) How this mod works is that manufacturer's run a coolant line to and from your factory throttle body. After driving for awhile, your coolant will reach temperatures of up to 210F ...this hot coolant running through the throttle body heats up the air entering the engine and hurts performance. This can hurt your drag racing quarter mile times by as much as 3 tenths. When you bypass the coolant lines to and from your throttle body, it will keep the air entering the engine up to 40 degrees cooler giving your engine its maximum performance output.

06-09-2004, 02:37 PM	#2
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	I've heard of that theory too. It sounds reasonable.... __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

06-09-2004, 03:50 PM	#3
GhettoPop Gimme a Drink! Join Date: Dec 2002 Location: NYC Posts: 694	why does coolent run through the TB? and what does this system do, bypass the entire colling system and just run hose from one end on the TB to the other in a closed loop? __________________ 1990 GT,stock T-5,K&N w/o air silencer,March underdrives,FMS wires,timing@14*,PA Perf 130amp alt,Steeda Tri-Ax Shifter,Steeda adj quadrant/clutch cable/firewall adj,Centerforce II clutch,o/r x-pipe,Magnaflow SS catback,g-load brace, subframes,Bilstein struts/shocks,Autometer gauges, 136k and running strong!

06-09-2004, 03:57 PM	#4
GhOsT6_9 Registered Member Join Date: May 2000 Location: Ontario,Canada Posts: 233	The reasoning for the coolant going into the TB is for in the cold climate areas, such as in Canada or Northern US where the temps drop to at or below freezing. The coolant flows into the TB and keeps the TB from being froze shut. Although if you dont' live in a cold area, or dont' do winter driving then this does nothing for you but make incoming air warm up, by heating up the TB. __________________ 1989 Mustang LX Notch 5.0L, T-5, 1969 351W heads, cut & welded stock plenum, F-303 cam, Mac 1 5/8 full length headers, Cat'd H-pipe, 3.73 gears, Underdrives, SSM lift bars, E-Fan, 3G Alt, Custom Chip, Autometer gauges, Weld Draglite wheels , M/T ET Street Radials Best 1/4: 13.33@101.53MPH

06-09-2004, 05:05 PM	#5
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Yeppers... Yes the coolant runs through the TB for colder climate areas. Think of it as a choke for fuelie motors. I have seen this mod, and yes it does work. However, I'd be very surprised if it knocked off THREE TENTHS! It does work though. __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

06-10-2004, 05:24 AM	#6
Capri306 Moderator Join Date: Sep 1998 Location: Grand Rapids, Michigan, USA Posts: 1,001	Coolant lines pass through the EGR spacer on a 5.0L to keep that area's temperatures under control, as well as a Michigan-proofing. I've seen people block them off, and it's okay on an application where EGR is disabled. However, the intake temperature will skyrocket without the coolant flowing through if it is working as designed. Seriously, I don't think this will do $hit for any more power or fuel economy. At the rate the air is flowing past the throttle body, just how much heat do you think is being transferred to the intake charge? At wide open throttle, most of the air is not contacting the throttle body's bore, either. Come on, let's be realistic. Even in the days of carburetors, that heat stove on the exhaust manifolds could hardly get the intake stream above ~150F. Even at a lower temperature, the air would be warmed up by the time it gets to the plenum and runners from ordinary engine heat. __________________ Capri306, Moderator The Mustang Works Online 1979 Mercury Capri 1987 5.0L Mustang LX Notchback 1993 5.8L Eddie Bauer Bronco

06-10-2004, 06:02 AM	#7
Ackbar00 Rebel Fleet Commander Join Date: Oct 2001 Location: Huber Heights, OH Posts: 1,003	Do it yourself for $3. There are two line that go inot the TB, one in front, one in back. Both lines plug into the black coolant tube that feeds into the firewall. Just buy 2 caps that fit over those nubs on the black coolant tube, and clamp them down. Your done. BTW - 8Hp gain from this is bulllshit. __________________ 1993 Mustang GT, PTK w/ T-64 - My Cardomain Webpage 11.25@123.5 on only 8 psi. 10.84@121 on only 1 headgasket "The Truth is, Your the Weak, and I am the Tyranny of Evil Men!"

06-10-2004, 07:56 AM	#8
302 LX Eric or '331 LX Eric' Join Date: Jan 1999 Location: Columbus, Ohio Posts: 2,142	If you're still running the factory EGR, I would just leave the coolant lines alone. E __________________ 1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60'

06-10-2004, 08:06 AM	#9
bigred90gt 2 Stangs in the Stable Join Date: Apr 2002 Location: Baytown, TX Posts: 1,209	Have you ever touched the upper intake manifold after you have been running your car? I guarantee between that, and the heat generated in the lower intake manifold by your heads, the coolant lines in the TB are doing nothing to heat your intake charge that the intake man isnt doing. Its a waste of money. But as already stated, if you feel you must do it, it can be dont very cheap. Definately not worth whatever you will pay for a kit on ebay. BTW - your link doesnt work. You have to put the URL in the second window when inserting a hyperlink. The first window is for the text you want to the link to appear as. __________________ '90 GT Under construction Best E.T. = Fast @ High Speeds - OK So I Lie. So What!!! 04 F-150 STX 4.2L 5 spd Rice Haters Club Member #128

06-11-2004, 12:45 AM	#10
speedytang Registered Member Join Date: Oct 1999 Location: Marengo, Ohio.USA Posts: 135	Just use a aluminum brake line and hook the lines together and bypass the EGR. Just like the Cobra intake does.

06-11-2004, 07:46 AM	#11
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Coolant loop to the TB is not for cold weather operation. Think about it, when the car's cold, the coolant is cold so there is no 'choke' effect. Coolant is routed to the TB to purposely raise the intake air charge temperature for emission purposes. By raising the air charge temperature, the NOx emissions are reduced. NOx is the most harmful of the products of combustion. Eliminating both the coolant loop and EGR function are of good benefit for all-out performance. As someone else mentioned, both of these work to increase the intake temperature and thereby reduce air charge density and resulting HP. If you're not too emission/EPA-minded, block the coolant path and completely remove the EGR for added performance. Also install a phenolic spacer and use freeze plugs to block the EGR ports between the upper/lower intakes. All this will lead to a cooler intake plenum and result in a more dense intake charge and increased HP. The EGR valve is closed at WOT, so it's not dumping exhaust stream when you're on it, but the rest of the time it is partially open and heating your intake up while you cruise around town, up to staging or back from a run. Eliminate EGR all-together. Have a chip burnt to shut the EGR function off in the computer and you won't get the related codes when you check them. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

06-14-2004, 01:19 AM	#12
stanger9219 Registered Member Join Date: Sep 2003 Location: st. louis, MO Posts: 197	Its more of an "in theory" mod. I did it with copper tubing surrounded by a rubber hose. I think the 8 hp, 3 tenths thing is just to get people to by the cheap thing. Dont waste money, make one yourself if you really want to do it. __________________ 98 Cobra, CAI, Flowmasters, o/r h-pipe. 4.10s, Hurst shifter.

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