Originally Posted by kodyo (Post 1834277)

I've read these snorkel mods mess with the AFR, any truth to that?

Originally Posted by Target70 (Post 1834531)

I think Shiv runs the modified snorkel on their shop car, and I don't think he had to rescale the MAF voltage.

Originally Posted by Trettiosjuan (Post 1834613)

What is the net gain on an NA? 5whp?

Originally Posted by GrimmSpeed (Post 1834953)

We've got some real answers!

We saw repeatable gains in top end with modified snorkel:

http://www.grimmspeed.com/content/im...norkel_4th.jpg

2-3whp, 1-2wftlbs, nearly no change in AFRs (except a small one down low)

Here's where we cut ours:

http://www.grimmspeed.com/content/im...stingday_3.jpg

I believe Shiv's is similar to this, but then heated up and expanded with a pop (soda) bottle.

TONS more info in our post about stock airbox testing: http://www.ft86club.com/forums/showthread.php?t=56341

Chase
Engineering

Originally Posted by DC2R (Post 1834989)

Any concerns with heavy rain? Been driving in some pretty heavy downpour lately. Interested in this mod but would hate for any water to get in engine for 2 HP

Sent from my SM-N900T using Tapatalk

Originally Posted by Dephective (Post 1834933)

The real gain would be less heat soak and more response, especially at lower speeds. Most of what people "feel" as power is just better response that they attribute to power. You really aren't going to feel 1-5hp. Tq, on the other hand, is a different story.

Originally Posted by Kostamojen (Post 1306170)

So I did my own modification today, taking the ideas from this thread and expanding on it a bit...

I have a TRD intake so this might have even MORE benefit for me.

http://i15.photobucket.com/albums/a3...031_141027.jpg

First thing I did was swiss cheese the plastic blocker plate thingy a bit more.



Then I used an exacto knife and scissors to modify my snorkel. I also used a spread clamp and heat gun to spread the intake out a bit more for a more rounded shape.

I decided to keep both mounting points installed and turned half of the "tube" into a bit of an airflow blocker/director so it should send air to the intake even better :)

http://i15.photobucket.com/albums/a3...031_144155.jpg

The TRD is a LOT louder now, but its the kind of loud that only gets loud when you step on it which is what I wanted :D Haven't done any high speed testing yet to see if it helps.

Originally Posted by Dephective (Post 1834933)

The real gain would be less heat soak and more response, especially at lower speeds. Most of what people "feel" as power is just better response that they attribute to power. You really aren't going to feel 1-5hp. Tq, on the other hand, is a different story.