TB bypass answer
Thread Starter
Instructor
Joined: Jun 2005
Posts: 223
Likes: 0
From: Peoria Arizona
TB bypass answer
the TB is heated for emissions purposes under cold starting conditions. hotter air means better atomization, which means less emissions which means less power.
if yoru willing to cope with more emmisions... ie: an increase from next to 0 emmisions to a little more than next to 0 emmisions, then go for it.
infact racers will put a box ontop of their whole intake manifold and fill it with chunks of dry ice, even tho the air is only there for a split second, every bit helps. F1 cars spent 15 millions dollars in R&D to reduce the weight of each wheel rotor 1 kg
06Z06 hoods are carbon fiber to reduce weight 6 pounds, and titanium exhaust to reduce another 14 pounds, at a cost of over 2 million dollars research for each, thats about 500,000 per pound. just think how much weight would be saved if we all dieted to the low end of our ideal body weight, priceless. better yet, have a 90 pound asian chick drive our cars for us.
if yoru willing to cope with more emmisions... ie: an increase from next to 0 emmisions to a little more than next to 0 emmisions, then go for it.
infact racers will put a box ontop of their whole intake manifold and fill it with chunks of dry ice, even tho the air is only there for a split second, every bit helps. F1 cars spent 15 millions dollars in R&D to reduce the weight of each wheel rotor 1 kg
06Z06 hoods are carbon fiber to reduce weight 6 pounds, and titanium exhaust to reduce another 14 pounds, at a cost of over 2 million dollars research for each, thats about 500,000 per pound. just think how much weight would be saved if we all dieted to the low end of our ideal body weight, priceless. better yet, have a 90 pound asian chick drive our cars for us.
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,840
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Originally Posted by MeekRN
the TB is heated for emissions purposes under cold starting conditions. hotter air means better atomization, which means less emissions which means less power.
if yoru willing to cope with more emmisions... ie: an increase from next to 0 emmisions to a little more than next to 0 emmisions, then go for it.
infact racers will put a box ontop of their whole intake manifold and fill it with chunks of dry ice, even tho the air is only there for a split second, every bit helps. F1 cars spent 15 millions dollars in R&D to reduce the weight of each wheel rotor 1 kg
06Z06 hoods are carbon fiber to reduce weight 6 pounds, and titanium exhaust to reduce another 14 pounds, at a cost of over 2 million dollars research for each, thats about 500,000 per pound. just think how much weight would be saved if we all dieted to the low end of our ideal body weight, priceless. better yet, have a 90 pound asian chick drive our cars for us.
if yoru willing to cope with more emmisions... ie: an increase from next to 0 emmisions to a little more than next to 0 emmisions, then go for it.
infact racers will put a box ontop of their whole intake manifold and fill it with chunks of dry ice, even tho the air is only there for a split second, every bit helps. F1 cars spent 15 millions dollars in R&D to reduce the weight of each wheel rotor 1 kg
06Z06 hoods are carbon fiber to reduce weight 6 pounds, and titanium exhaust to reduce another 14 pounds, at a cost of over 2 million dollars research for each, thats about 500,000 per pound. just think how much weight would be saved if we all dieted to the low end of our ideal body weight, priceless. better yet, have a 90 pound asian chick drive our cars for us.
Le Mans Master
Joined: Jul 2002
Posts: 7,370
Likes: 8
From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
Originally Posted by MeekRN
the TB is heated for emissions purposes under cold starting conditions. hotter air means better atomization, which means less emissions which means less power.
if yoru willing to cope with more emmisions... ie: an increase from next to 0 emmisions to a little more than next to 0 emmisions, then go for it.
infact racers will put a box ontop of their whole intake manifold and fill it with chunks of dry ice, even tho the air is only there for a split second, every bit helps. F1 cars spent 15 millions dollars in R&D to reduce the weight of each wheel rotor 1 kg
06Z06 hoods are carbon fiber to reduce weight 6 pounds, and titanium exhaust to reduce another 14 pounds, at a cost of over 2 million dollars research for each, thats about 500,000 per pound. just think how much weight would be saved if we all dieted to the low end of our ideal body weight, priceless. better yet, have a 90 pound asian chick drive our cars for us.
if yoru willing to cope with more emmisions... ie: an increase from next to 0 emmisions to a little more than next to 0 emmisions, then go for it.
infact racers will put a box ontop of their whole intake manifold and fill it with chunks of dry ice, even tho the air is only there for a split second, every bit helps. F1 cars spent 15 millions dollars in R&D to reduce the weight of each wheel rotor 1 kg
06Z06 hoods are carbon fiber to reduce weight 6 pounds, and titanium exhaust to reduce another 14 pounds, at a cost of over 2 million dollars research for each, thats about 500,000 per pound. just think how much weight would be saved if we all dieted to the low end of our ideal body weight, priceless. better yet, have a 90 pound asian chick drive our cars for us.
Burning Brakes
Joined: May 2003
Posts: 1,056
Likes: 2
From: Elgin Il
I don’t know if that’s right or wrong, but that is the worst explanation of why the TB is heated I have ever heard.
I thought it was heated to keep it from freezing in winter driving at start up.
Which also sounded lame, but I could believe it.
But to heat it for emissions sounds ridiculous to me.
Heat transfer from the TB to the gas will be zero.
Hotter air producing better atomization sounds crazy to me too.
Isn’t getting hotter air in at start up the purpose of the egr? I don’t know, Im just asking?
Like I said, don’t know if its right or wrong, but it sure sounds silly to me.
I thought it was heated to keep it from freezing in winter driving at start up.
Which also sounded lame, but I could believe it.
But to heat it for emissions sounds ridiculous to me.
Heat transfer from the TB to the gas will be zero.
Hotter air producing better atomization sounds crazy to me too.
Isn’t getting hotter air in at start up the purpose of the egr? I don’t know, Im just asking?
Like I said, don’t know if its right or wrong, but it sure sounds silly to me.
Drifting
Joined: Oct 2003
Posts: 1,540
Likes: 0
From: bloomfield nj
the by-pass is to keep the throttle from freezing,that is it.has nothing to do with the air coming in,etc.
secondary air is used to help fire up the cats on start up
egr is used to lower nox[cool cylinder temps].vettes don't use egr because of the cam profiles used.
secondary air is used to help fire up the cats on start up
egr is used to lower nox[cool cylinder temps].vettes don't use egr because of the cam profiles used.
Le Mans Master
Joined: Sep 2003
Posts: 8,847
Likes: 794
From: Longview Texas
Originally Posted by dpd
the by-pass is to keep the throttle from freezing,that is it.has nothing to do with the air coming in,etc.
.
.
Burning Brakes
Joined: Feb 2001
Posts: 936
Likes: 0
From: Reston VA
I believe the intent of running coolant through the throttle body was to prevent cold humid air to from forming ice on the throttle as you were driving. It wasn’t for start up because the coolant wouldn’t be hot enough yet, the same can be said for emission control. Since I live in Texas, I did bypass mine. Since I was changing intake manifolds, it seemed like a good idea at the time but I wouldn’t have done it otherwise. – C.
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Le Mans Master
Joined: Oct 2005
Posts: 8,641
Likes: 1
From: Location : Location :
Originally Posted by MeekRN
the TB is heated for emissions purposes under cold starting conditions. hotter air means better atomization, which means less emissions which means less power.
if yoru willing to cope with more emmisions... ie: an increase from next to 0 emmisions to a little more than next to 0 emmisions, then go for it.
infact racers will put a box ontop of their whole intake manifold and fill it with chunks of dry ice, even tho the air is only there for a split second, every bit helps. F1 cars spent 15 millions dollars in R&D to reduce the weight of each wheel rotor 1 kg
06Z06 hoods are carbon fiber to reduce weight 6 pounds, and titanium exhaust to reduce another 14 pounds, at a cost of over 2 million dollars research for each, thats about 500,000 per pound. just think how much weight would be saved if we all dieted to the low end of our ideal body weight, priceless. better yet, have a 90 pound asian chick drive our cars for us.
if yoru willing to cope with more emmisions... ie: an increase from next to 0 emmisions to a little more than next to 0 emmisions, then go for it.
infact racers will put a box ontop of their whole intake manifold and fill it with chunks of dry ice, even tho the air is only there for a split second, every bit helps. F1 cars spent 15 millions dollars in R&D to reduce the weight of each wheel rotor 1 kg
06Z06 hoods are carbon fiber to reduce weight 6 pounds, and titanium exhaust to reduce another 14 pounds, at a cost of over 2 million dollars research for each, thats about 500,000 per pound. just think how much weight would be saved if we all dieted to the low end of our ideal body weight, priceless. better yet, have a 90 pound asian chick drive our cars for us.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
The throttle body creates a low pressure area around the inside opening where the throttle plates rest on the throttle body. The air passing over that low pressure area will rapidly expand and can form frost/ice on the inside of the throttle body. The hot coolant passing through the throttle body is suppose to eliminate the chance of the throttle blade sticking open due to icing in that low pressure area.
I have the TB Bypass and drive my Z daily here in the NE. I have not had a throttle body freexing event yet!
Who knows if if add any thing or not. if you want to do it then DO IT! If not then DONT!
BC
I have the TB Bypass and drive my Z daily here in the NE. I have not had a throttle body freexing event yet!
Who knows if if add any thing or not. if you want to do it then DO IT! If not then DONT!
BC
Team Owner
Joined: May 2001
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Originally Posted by Nithros
Why would that bother him - he invented the Corvette too...
And furthermore, Al Gore is a risky scheme! 
Drifting
Joined: Dec 2005
Posts: 1,720
Likes: 3
From: East Hampton CT
I bypassed my TB on my 1994 LT1 Camaro and it worked perfectly in all weather conditions for several years after. Never had a problem with sticky throttle or icing. I feel that it DID make a difference, esp in warm weather....the seat of the pants dyno said at least 5-10hp. Since there is a compensation factor for warm air on SAE corrected dyno numbers, you can assume that cooler air = more power 
I'm going to do this on my C5 shortly....I'm sure I won't have any issues.
I'm going to do this on my C5 shortly....I'm sure I won't have any issues.