Throttle bypass Kit---Why?
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Joined: Mar 2002
Posts: 75
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From: San Juan Capistrano CA
Throttle bypass Kit---Why?
I saw a kit to bypass the throttle body/coolant passage....are there any real performance benefits to doing this? Why is it there in the first place?
Thanks,
:hat
Thanks,
:hat
Burning Brakes
Joined: Aug 2000
Posts: 873
Likes: 0
From: Albuquerque nm
Re: Throttle bypass Kit---Why? (90 droptop)
TB bypass act's as a choke aiding in cold weather start's by providing warmer air to the TB.
Unless you live in a state where winter over night low's are -10* you dont need it.
Alot of us spend good money finding the intake that provide's the coolest air (cooler air more HP).We dont want to be pushing warm air into the TB and defeating the purpose.
How much HP on the conversion I'm not sure,but good cold air induction system's can make you up to 20hp with maf or maf-t.So it's gotta cost some ponies if you leave it on..IMHO..... :seeya
Unless you live in a state where winter over night low's are -10* you dont need it.
Alot of us spend good money finding the intake that provide's the coolest air (cooler air more HP).We dont want to be pushing warm air into the TB and defeating the purpose.
How much HP on the conversion I'm not sure,but good cold air induction system's can make you up to 20hp with maf or maf-t.So it's gotta cost some ponies if you leave it on..IMHO..... :seeya
Safety Car
Joined: Feb 2001
Posts: 3,569
Likes: 0
From: Greenville NC
Re: Throttle bypass Kit---Why? (flash1034)
I saw a kit to bypass the throttle body/coolant passage....are there any real performance benefits to doing this? Why is it there in the first place?
Thanks,
:hat
Thanks,
:hat
Le Mans Master
Joined: Oct 1999
Posts: 8,205
Likes: 40
From: Tucson AZ
Re: Throttle bypass Kit---Why? (flash1034)
There will be no SOTP improvement, and it is probably a waste of time and money. Air moves so fast through the TB that it really does not have time to absorb heat, unless you are at idle; that is when it helps cars that are driven in cold and damp climates. :smash: :yesnod: :)
Burning Brakes
Joined: Feb 1999
Posts: 1,165
Likes: 1
From: San Jose CA
Re: Throttle bypass Kit---Why? (flash1034)
No performance gains.
The TB is heated to avoid freezing of the TB plates during idle.
Freezing would happen when all of the following conditions are met:
1) Outside air temp. just above freezing point.
2) High relative air humidity
3) Engine is in the first few minutes of its warmup fase and goes to idle. (ex. stopped at a traffic light)
At idle , the TB plates are almost closed so the intake air gets accelerated and thereby gets cooled down producing ice at those areas. As a result, the engine slowly stalls.
I had this happen on my 1st generation RX7 and this was the official factory explanation. I got a factory upgraded TB out of it at that time.
Hope this helps.
Roger
The TB is heated to avoid freezing of the TB plates during idle.
Freezing would happen when all of the following conditions are met:
1) Outside air temp. just above freezing point.
2) High relative air humidity
3) Engine is in the first few minutes of its warmup fase and goes to idle. (ex. stopped at a traffic light)
At idle , the TB plates are almost closed so the intake air gets accelerated and thereby gets cooled down producing ice at those areas. As a result, the engine slowly stalls.
I had this happen on my 1st generation RX7 and this was the official factory explanation. I got a factory upgraded TB out of it at that time.
Hope this helps.
Roger
