DIY Stock Intake Mod

39855 Views 90 Replies 34 Participants Last post by foreverkidd, Mar 30, 2011

Supraman16

Discussion Starter · Oct 4, 2008

Hi Guys,

Well, I got to thinking about the stock dual stage intake and figuring out a way to keep fender side intake opening open all the time. In case you didn't know, the fender side intake opening is closed until around 3600rpm, which is when it opens up, thus resulting in the now infamous and much beloved "IS-F Roar". As you can see from the picture below, all I did was just pull off the vacuum hose from the actuator and plug off the other end with a vacuum cap. Now the "IS-F Roar" comes on around the 2300rpm, and to me atleast, there seems to be a bit more power down low...which makes since because now the engine can breathe a bit better down low with both intake opening being open all the time. The only downside would be if this throws off the air/fuel ratio's from stock. I don't think it will drastically, but I'm not sure. Anyway, try it out and let me know what you guys think. Oh yeah, no check engine light either! Have fun...Darshana S...

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billandbill

· #39 · Mar 16, 2009

Guys I did it this morning and I'm never going back to normal, love what it did to the car, as far as I'm concerned they should have sold us the cars this way, and yes no engine light yet, hope never.
Thanks a million Supraman16.
Just out of curiosity, how did you come up with the idea.
People you have to try it, it took me 20 sec.

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billandbill

· #41 · Mar 16, 2009

I used electrical tape for now

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billandbill

· #43 · Mar 17, 2009

After spending the whole day with both of the intakes working the way they should have since day 1, I can tell you guys why Toyota never did it this way.
The car is actually way lauder, suits me just fine.

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