Rep Power: 812

well yea that part is true. so if you drive at 100F, then drive at 0F, you gain around 10whp. but it also depends on mods.

 
Rep Power: 374

its working fine for me (knock on wood). its been about a year and no problems, the gains are noticible in the florida weather too. i recommend it.

 
Rep Power: 0

also forgot to mention, that what whp is sapped from your higher underhood temps from driving for a little while is partially restored with this mod, I forget to include a lot.. lol.

 
Rep Power: 812

i think i just need to get a vented hood and call it a day lol

 
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I have this mode for a year and no problems, the idle is fine in the mornings take longer to heatup but that is no problem. I think this: "to help the air/fuel mixture we need cold air" right and for me that thing just heatup the throttle body with water from the radiator and that does not have sense at all.

 
Rep Power: 309

haha, , I'm leaving it as it is, don't want to mess up my idle, what I'm doing is the throtte porting for sure Thanks a ot gearbox

 
Rep Power: 309

HiVtec, what's up, yo llegare a Corozal tardecito pq mi novia quiere q salgamos y pues tu sabes, cualquier cosa de manañana no pasa pa yo darte el money.

 
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Que tal bro, no hay problema yo tengo que salir de nuevo para guaynabo hasí que hablamos luego.

 
Rep Power: 309

Dale suave por ahi y castiga a ese civic, jaja.

 
Rep Power: 374

i just got a vented hood and it keeps everything so much cooler. it is really unbelievable, and the rain doesnt really get all over the engine bay. it makes a huge difference in the warm weather.

 
Rep Power: 309

Does your hood is the evo style?

 
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mira mano yo hice esa modificacion y no he teneido problemas ,,,x2 años,,,ahora vivo en kentucky,,,,,,yo lo que hice fue use las mismas mangeras,la que va al trotle del frente la use para conectarla hasta a atras y la otra la use en forma de u en el trotel...ahhh pos si acaso soy de guaynabo,,,boricua de cora

 
Rep Power: 309

Wepa bori, mera no tuvistes problemas instalandola las mangas, se te salio mucho coolant? La forma de U la pones en el throttle pa q no se meta nada verdad? Check it loko! another bori in the site.

 
Rep Power: 309

I think I'll try it, I'm a little picky about it though.

 
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no mano no boto tanto coolanty no me ha dado problemas para nada y si la manga la puse en forma de en el throttle

 
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I did my throttle bypass six months ago. I live in Marin County CA, where it gets down to freezing some winter nights, but no lower. Never had any trouble or noticeable problem. Think of it this way. The original purpose of the unit is to preheat the intake air. That is probably why CAIs don't help our civics much, because we bring in cooler air only to HEAT it again in the throttle. I would bet money that my EX has more hp when it is hot than it did before the mod. Do the mod. Then your car won't be a slug on a hot day. Also put some foam pipe insulation over your top radiator hoses.

Dadawads

 
Rep Power: 282

hey reyesvasquez...when and where did you go to basic? oddly enough, the guy that slept across from me in the the bay at basic had the same name...

*edit: i know nothing of the throttle body bypass, but it'd be good to see how it turns out for ya. sorry to threadjack.*

 
Rep Power: 309

I might do it, but something's on my head, it could be so f^cked up if the line pops up and hot coolant is spilling everywhere

 
Rep Power: 260

imo, i would not do it. yea it is a great thing to do but only if you are using your car on the strip or plan on racing it! after about the 2nd or 3rd run, the air and the engine is hot enough that it won't matter whether or not you have the bypass!!!

 
Rep Power: 309

I think I'll only do it if there's a dyno to prove it

 
Rep Power: 260

if you have one available to you and have the money...then go for it. like i said, it is only going to be beneficial for the first couple of runs. i still think you are wasting time and money on it when you could be doing something else that has already been proven!!

 
Rep Power: 812

you gain 2 degree cooler air by doing it and risk messing up the idle.

 
Rep Power: 0

I disagree with Gearbox. After driving 15 minutes, I opened the hood of my civic, and felt the throttle. (It has the heater bypass) It was cold to the touch. Granted, it's about 50 out, but I promise you that this mod is well worth doing. No risk, no cost, and you won't defeat your intake by reheating the cooler air it is bringing to the engine. The idle on my car is perfect. There is a big difference in power on a very hot day. I'm not claiming it makes more hp, but I promise that you won't lose hp from heat soak on those hot days.

Dadawads

 
Rep Power: 812

okay when you take into account how fast air is moving, and the surface area of the throttle body, the affect of a cool throttle body will be only a few degrees colder air. thats thermodynamics for you. if you want, go find a straw and try blowing through it and feeling the air. now take a piece of ice and put it around 1 inch of the straw. blow again and see if you feel colder air coming out the other side.

 
Rep Power: 302

It is so worth it i just did mine and i love it i live in michigan and it idles a little rougher in the winter but in the summer its beatiful. I would do it

 
Rep Power: 363

made a noticable difference on my d17 ... the metal intake piping was no longer scorching hot ... even after a long drive. it was warm, but not hot.

true that if you have a cai, it's gonna be sucking in cool air ... but the throttle body, intake mani and intake piping are all going to be hotter without the mod... which contributes to a hotter engine bay and higher iat's. the throttle body is not the only thing that is affected by it. If you have an sri, you're gonna be even worse off because hotter engine bay temps are going to affect hp since that's where your filter is getting the air from.

this is all just my logical side rambling.

I did the same to my k20 without thinking twice ...

imo, it's a good mod.

 
Rep Power: 363

I'll take an excerpt from some information from some forums:

http://forum.mazda6tech.com/about2001-0.html : "FWIW, I actually did a little comparison using my handy Radio Shack IR thermometer a while back. I'd get out and check the temp immediately after shutting the car off, after a little drive (usually when I got home from work, about 10 miles). I did that for several days, then bypassed and repeated...

Ambient temps generally being in the 85F range, the bypass lowered the TB temps by 25-30 degrees consistently. On an even longer drive, it might be more profound, as heat soak effects might be more prounounced. In general, it did seem to make the difference between "too hot to handle" and "not"..."

the key words here are heat soak ... when your engine bay, intake, intake mani, tb etc all get "soaked" with heat. Most people with short ram intakes will confirm that they can feel their car bogs off the line in very warm weather ... that is due to heat soak. TB coolant mod will alleviate much of it.

even Hondata suggests that it has benefits, especially when installing it with their intake manifold gasket: http://www.hondata.com/heatshieldgasket.html ... excerpt: "The graph above shows the results of installing the Heatshield gasket and bypassing the throttle body heating and idle control valve heating"

 
Rep Power: 812

the only thing that gets heat soaked is the tb. air moving that fast passing through the throttle body over that small of a surface area will not affect air temp. our intake mani is plastic, and the throttle body does not even touch it. there is more heatsoak from the head in that respect. as far as the intake, i've felt the part directly over the tb and it is still cold but then again my pipe isn't touching anything. and my iat is safely away from the tb. the engine is a much bigger source of heatsoak than the small tb.

 
Rep Power: 363

the throttle body is connected to the intake mani, is it not? if so, then it is touching.

I don't remember how it is on the d17, but afaik, intake mani's are connected to the t/b's.

the intake pipe gets heat soaked as well... I've felt this on more than one intake on different motors. And no, the intake pipes were not directly touching the t/b when connected.

there is concrete evidence plain as day showing that the bypass mod lowers iat's. I think I will trust what hondata has to say about it ... I don't think it is just a shameless plug to buy their gasket.

want more proof?: http://www.ws6.com/mod-8.htm

 
Rep Power: 302

trust me he know whats he is taking about he helped me out with my throttle body. Thanks gearbox it works great