Celica Forums General Discussion Engine and Performance butterfly remove mod.

hello hope you all are having a great day.

any ways i just got done removing my butterfly valve on my intake...it was easy as 1 2 3 BUT...i have a question about two hoses connected to the intake..

what is this hose and how come i heard a hiss sound when it came off?
(its the light blueish color looking hose)


and the hose that used to be connected to the butterfly valve fine as is? left alone not connected to anything?


thanks.

here are some pictures to help remove the butterfly valve...


lift up on the valve housing.

And this is what a Celica GT auto sounds like with the butterfly mod:

Both of those hoses are vacuum lines, put a plug in that loose line.

Hello everyone i am a new member here.
Before i remove butterfly valve on my 2005 celica gt i have a few questions.
Is healthy to remove butterfly valve for car and engine? I mean are any known downsides or any problem after butterfly valve removal? What about CEL? If i disconnect battery when i do this mod there will be no CEL after?
So when i pull out butterfly valve i just plug hose which was connected to butterfly valve before removal? Is that only hose i must plug or they are 2?
And yes for what is butterfly valve in car also? Is it only for intake noise restriction?

Thank you very much for your help
Sorry for my langauge

Plug the hose with a screw that fits in the hose that will not get sucked in then you'll be fine. No CEL means you did it right.