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Post by y2daniel1981 on Nov 3, 2006 18:22:12 GMT -5
Oh I'm so sad, I have to reverse my throttle body coolant bypass mod. The weather here is starting to drop below freezing and now I must give up performance until Spring  And a note to people that have, or will do this mod: Make sure you can easily undo it and remember how you did the mod! Make sure you have the parts ready when it's time to put it back together (No this didnt happen to me, I was prepared) |
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Post by khan4rtist on Nov 3, 2006 18:36:18 GMT -5
meh, it doesnt do crap anyway, i have the mod and theres no noticeable difference, if any.
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Post by Brian5475E on Nov 3, 2006 18:57:10 GMT -5
+1
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Post by y2daniel1981 on Nov 3, 2006 20:07:26 GMT -5
Well I have found it to make a difference on my car when I did it
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Post by khan4rtist on Nov 5, 2006 0:40:55 GMT -5
i think it was placebo, it still gets hot as f*ck after a while
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Post by y2daniel1981 on Nov 5, 2006 11:08:05 GMT -5
yeah one thought of mine was the placebo affect, considering i didnt really feel a difference after i took it off
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Post by shapinoweno on Nov 16, 2006 13:10:30 GMT -5
hmmmm, im wondering if this is worth doing, ?
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Post by y2daniel1981 on Nov 16, 2006 23:40:59 GMT -5
it's up to you, it should cost you less then $10 and 30 minutes anyway
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Post by shapinoweno on Nov 17, 2006 12:22:44 GMT -5
i wonder what the dealer would think of that if i brought my car in for service.? well when then open the hood they will see a intake so i guess it would not matter. lol.
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Post by mtlswift on Nov 17, 2006 13:32:20 GMT -5
i wonder what the dealer would think of that if i brought my car in for service.? well when then open the hood they will see a intake so i guess it would not matter. lol. Had mine in, no probs. Have it on my other car too, had it in for 4-5 oil changes, no probs. If you do it well, it's not really noticeable unless you're looking for it. |
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Post by shapinoweno on Nov 17, 2006 17:06:11 GMT -5
yeah thats what i figured
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Post by mtlswift on Nov 23, 2006 15:20:01 GMT -5
I've done a lot of reading lately, and I think khan might have it right, due to the VGIS and high EGR on our engines i.e. bypassing, even though it may cool the intake air, will probably hurt overall fuel economy and performance.
I say this because it is due to the high amount (25%) of exhaust gas that gets recirculated into the intake stream at lower rpm. The large amount of exhaust gas recirculated is also supposed to reduce the amount of thermal loss. So I assume that the engine is tuned to burn "heated" intake air and therefore adding in cooler air reduces the efficiency of the engine to burn the air/exhaust gas mixture efficiently by upsetting the mixture balance.
It's not like other cars which have a low EGR rate where cooler air does have an added benefit... So the theory is sound, but is not meant for the "technology" of the engine. Of course, this tech is not state of the art- toyota was using it in the 80s and 90s, but not any more...
I'm gonna swap back and see if I get a fuel economy increase...
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Post by y2daniel1981 on Nov 23, 2006 19:00:22 GMT -5
but our goal was more power, not gas milage!
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Post by mtlswift on Nov 23, 2006 21:40:37 GMT -5
but our goal was more power, not gas milage! I think, though, because of the high amount of EGR that both end up suffering... I did the bypass originally not to gain any more HP, but to try to prevent any HP drop as the engine warms... but I think because of the way the engine works, not "warming" the intake air hurts performance in the end. |
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