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I have a question, on the QG there are coolant lines that go to the throttle body, are there any ill side effects of removing those coolant hoses and either capping them off at the source or looping them together? Will the idle hang due to not heating the idle air control circuit? I live in the Florida, so icing of the throttle body won't be an issue. Any input would be greatly appreciated. Thanks in advance. Frank
 

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the main reason the coolant goes to the tb is for icing issues, there are other reasons as well like having a steady intake temp, also the tb is electronic and electronics are horrible in the freezing cold. but you should be fine if youre in florida and do the tb bypass, many of the qr25 do the tb bypass is warm/hot climates. so theres already a thread for this, so just do the same as the qr25.
 

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Ok, I will check into that thread further, I searched for the 1.8 and found nothing, but I didn't check the 2.5 because it was a totally different beast and I didn't figure any possible symptoms would be same between the two. I forgot to mention, it is a cable operated tb, not drive by wire... Either way, thanks for the information, any additional information would be greatly appreciated. Frank
 

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Pretty much what i68 said.

If you live in a cold climate this wouldn't be a good mod for you. If you live in a place like Phoenix or Miami or something....it would certainly be something to look into. I know when it is 120 degrees here in phoenix I don't need any burning hot coolant running through my throttle body.

That was actually one of the first mods I did on my 1.8. I ran it that way from about 20,000 miles or so until I sold the vehicle at 150,000. No problems what so ever.
 
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