Throttle Body By-pass??
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From: ontario
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Throttle Body By-pass?? Does anyone know about the Throttle Body Heater By-pass and what are the effects? Im sure theres more HP gain but i just wanna make sure who's done it plz let me know
Thnx
dubz01si
Thnx
dubz01si
Joined: Jul 2002
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From: Washington DC
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Anywhere cold... it's not a smart thing to do. It could cause the throttle to freeze open (or closed) and you could get into some ****. Given it says you're in Ontario, I don't know if I'd recommend it, unless you're gonna hook it back up for the winter.
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Rep Power: 0 I too noticed no gains and put it back (I knew I wouldn't, but figured I'd try anyways), plus if you do it wrong it will cancel out some of your sensors causing engine choking, etc. It happened to me, since I followed the DIY on this site. If you do want to try it anyways, the only way I could get it to work withour sensor errors was like this...
1. In the DIY instead of taking off the 2 hoses and connecting them together cap their ends
2. Cap the 2 throttle body heater openings too
3. So 4 pieces capped
If you follow the DIY you may get 2 errors in your ODB II readings (can't remember, but they had to do with air-flow and temp), after which your idle will be screwed and choking will occur (i.e., engine shutting down everytime you don't keep you rpm's up). I got this everytime I followed the DIY steps, but doing it the way my mechanic said allowed me to bypass the heater with no issues or errors popping up. In the end I figured it wasn't worth it since I'd be driving in extremes to often, plus I really don't think it would help performance-wise too much (if any highly negligable, unless you had 300+ hp or something).
1. In the DIY instead of taking off the 2 hoses and connecting them together cap their ends
2. Cap the 2 throttle body heater openings too
3. So 4 pieces capped
If you follow the DIY you may get 2 errors in your ODB II readings (can't remember, but they had to do with air-flow and temp), after which your idle will be screwed and choking will occur (i.e., engine shutting down everytime you don't keep you rpm's up). I got this everytime I followed the DIY steps, but doing it the way my mechanic said allowed me to bypass the heater with no issues or errors popping up. In the end I figured it wasn't worth it since I'd be driving in extremes to often, plus I really don't think it would help performance-wise too much (if any highly negligable, unless you had 300+ hp or something).
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Joined: Mar 2003
Posts: 363
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From: SF, California, US
Rep Power: 0 How this mod works: It stops coolant running around the throttle body (TB), which heats up the air going into the engine (~ 190? degrees? i can't remember what temperatures our motors are kept at)
This is primarily for cold weather starting & to prevent the throttle body from sticking due to icing.
The benefits that it appears to give is colder (denser) air, but that doesn't make much of a temperature difference once the engine has warmed up, as the motor is hot & heat is conducted to the TB, anyway. Also all the air under the hood is hot. To really reap the benefits of this, the gasket needs to insulate against heat (to prevent heat from conducting from the block to the TB & reduce underhood temperatures, but having a well- ventilated hood. And have a thermostat that keeps the engine ~ 10 degrees cooler (for racing, people usually pull the thermostat & use water- wetter instead of coolant) Even then, you may not have much of a power increase- maybe 1/ 2 hp on our motors!
Too much work, too little gains!
This is primarily for cold weather starting & to prevent the throttle body from sticking due to icing.
The benefits that it appears to give is colder (denser) air, but that doesn't make much of a temperature difference once the engine has warmed up, as the motor is hot & heat is conducted to the TB, anyway. Also all the air under the hood is hot. To really reap the benefits of this, the gasket needs to insulate against heat (to prevent heat from conducting from the block to the TB & reduce underhood temperatures, but having a well- ventilated hood. And have a thermostat that keeps the engine ~ 10 degrees cooler (for racing, people usually pull the thermostat & use water- wetter instead of coolant) Even then, you may not have much of a power increase- maybe 1/ 2 hp on our motors!
Too much work, too little gains!
Registered!!
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Rep Power: 0 Originally posted by Da2K1
How this mod works: It stops coolant running around the throttle body (TB), which heats up the air going into the engine (~ 190? degrees? i can't remember what temperatures our motors are kept at)
This is primarily for cold weather starting & to prevent the throttle body from sticking due to icing.
The benefits that it appears to give is colder (denser) air, but that doesn't make much of a temperature difference once the engine has warmed up, as the motor is hot & heat is conducted to the TB, anyway. Also all the air under the hood is hot. To really reap the benefits of this, the gasket needs to insulate against heat (to prevent heat from conducting from the block to the TB & reduce underhood temperatures, but having a well- ventilated hood. And have a thermostat that keeps the engine ~ 10 degrees cooler (for racing, people usually pull the thermostat & use water- wetter instead of coolant) Even then, you may not have much of a power increase- maybe 1/ 2 hp on our motors!
Too much work, too little gains!
How this mod works: It stops coolant running around the throttle body (TB), which heats up the air going into the engine (~ 190? degrees? i can't remember what temperatures our motors are kept at)
This is primarily for cold weather starting & to prevent the throttle body from sticking due to icing.
The benefits that it appears to give is colder (denser) air, but that doesn't make much of a temperature difference once the engine has warmed up, as the motor is hot & heat is conducted to the TB, anyway. Also all the air under the hood is hot. To really reap the benefits of this, the gasket needs to insulate against heat (to prevent heat from conducting from the block to the TB & reduce underhood temperatures, but having a well- ventilated hood. And have a thermostat that keeps the engine ~ 10 degrees cooler (for racing, people usually pull the thermostat & use water- wetter instead of coolant) Even then, you may not have much of a power increase- maybe 1/ 2 hp on our motors!
Too much work, too little gains!
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