3rd Gen GK Specific Fit Engine Modifications, Motor Swaps, ECU Tuning Sub-Forum Threads discussing engine mods/swaps/tuning for the third generation GK Honda Fit.

DIY air duct. <$10

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Old Jul 19, 2018 | 08:50 PM
  #1  
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DIY air duct. <$10

This is all you really need
Only needed if you dont want metal threads touching your bumper What do i need this for?
Just the cap
See where im going with this?
Perfect fit. Wrap electrical tape around the cap and lightly hammer it into the hole. It'll end up being snug


The felt gliders are good because when pressure is being applied to the hood, it's not too much stress on the bumper
 

Last edited by Hairymonkey019; Jul 19, 2018 at 08:53 PM.
Old Jul 19, 2018 | 09:58 PM
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Nice -- very inventive
 
Old Jul 19, 2018 | 11:29 PM
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damn fine job! also, good work on the cap. ive been seeking a better method than duct tape lol
 
Old Jul 19, 2018 | 11:39 PM
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so IAT comparisons..
 
Old Jul 20, 2018 | 02:03 AM
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Originally Posted by evilchargerfan
damn fine job! also, good work on the cap. ive been seeking a better method than duct tape lol
LOL....I used strapping tape (temporarily)….heh
 
Old Jul 20, 2018 | 09:57 AM
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Does plugging up the resonator make an audible difference in terms of sound quality?
My new Tanabe muffler does an excellent jpb cancelling the wheezing noises from the engine bay... but I feel like this engine is still to quiet.
 
Old Jul 20, 2018 | 01:03 PM
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^^^ it def helps, give it a try! its a quick and easy mod to do. you can test it out for yourself by putting duct tape over the hole that leads downward




Originally Posted by kenchan
so IAT comparisons..
iat's are consistently about 4-5 degrees over outside ambient temp. in this morns case .... 74 degrees outside, iat's at 78


 
Old Jul 20, 2018 | 01:43 PM
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dat ain’t bad!! hell daz good! dooo it.
 
Old Jul 20, 2018 | 03:58 PM
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Just an FYI, this is only applicable to 2018 MY.
The air intake duct (parts 3,4) as well as separator assembly (parts 1,7) are different for 2015-17 vehicles.
 
Attached Thumbnails DIY air duct. &lt;-resource.png  
Old Jul 20, 2018 | 04:29 PM
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PN's for the duct assembly are indeed diff ... but the diagram shows they are identical. That said, this mod the OP did, should work fine for 2015-2017s.




Parts 1, 7 appear to scoop air from the grille area upward into the duct, with the mod that would technically bypass the need for all the below as, the air now scoops from the hood area (similar to a seminole ram air duct)







I'll be testing it out within the next few days
 
Attached Thumbnails DIY air duct. &lt;-2015-2017_2_capture.png   DIY air duct. &lt;-2015-2017_capture.png   DIY air duct. &lt;-2018_2_capture.png   DIY air duct. &lt;-2018_capture.png  
Old Jul 20, 2018 | 05:20 PM
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Originally Posted by vinylengraver
Just an FYI, this is only applicable to 2018 MY.
The air intake duct (parts 3,4) as well as separator assembly (parts 1,7) are different for 2015-17 vehicles.
LOL!!!

heres super goodness for everyone! well, except 95% of u lol.. see ya!


nice evil!
 
Old Jul 20, 2018 | 08:29 PM
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forgive my automotive naivety, but what do these mods do?

thanks!
 
Old Jul 20, 2018 | 09:08 PM
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decrease heat soak, more consistent performance, or even increased performance.

cooler air has more oxygen (dense)
 
Old Jul 20, 2018 | 09:35 PM
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Looks nice.
 

Last edited by wasserball; Jul 20, 2018 at 09:38 PM.
Old Jul 23, 2018 | 02:40 PM
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I just grabbed the TW bottle and said.... this one will work.... lol.... and it did fit tight enough not to fall nor break the plastic. .. ill trim it a bit so it doesnt looks that awkward and post another pic later on the week
 
Old Jul 23, 2018 | 02:52 PM
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Originally Posted by evilchargerfan
^^^ it def helps, give it a try! its a quick and easy mod to do. you can test it out for yourself by putting duct tape over the hole that leads downward

Does the rubber rectangular hose just pull off of the bottom half of the filter box (the lower part that has the resonator)? I was tugging at it last night and it felt like there was something holding it on there. I didn't want to pull too hard.
 
Old Jul 23, 2018 | 05:01 PM
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Nicely done!
 
Old Jul 23, 2018 | 05:33 PM
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Originally Posted by bdcheung
Does the rubber rectangular hose just pull off of the bottom half of the filter box (the lower part that has the resonator)? I was tugging at it last night and it felt like there was something holding it on there. I didn't want to pull too hard.
the rectangular rubber piece just comes right off. grab, squeeze, tug..... it wont break
 
Old Jul 23, 2020 | 10:01 AM
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I did this to mine... along with the sumole air cooler and a k&n drop in filter, and some air box modding 😈


 
Old Aug 2, 2020 | 07:05 AM
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So I just drilled holes in my grill to the right of the Honda badge lmao to get more air till I make a carbon fiber piece to rivet in place ( still not sure if it’s worth the effort to make it till I get a small race radiator )
 



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