Intake Question
 

Those of you that have purchased your Fit (or those simply in the know), what previous Fit intake will work with the 2015? It appears to have a maf sensor. Does the 2015 have the same maf sensor as the last generation Fit?

I'm not looking for one to be a perfect fit. Just one where the maf sensor can be attached to it where the piping attaches to the throttle body. I plan on making changes to the piping after that point. I may be picking up a Fit on Monday. Thanks!

Edit: Keeping this link --> Intake Diameter Dyno Results in mind when playing with this intake.

http://scrensearch.com/wp-content/up...ay-600-001.jpg
Diagram of 2015 Intake -->
http://estore.honda.com/honda/images.../T5A4B0100.png

Air Intake Duct -->
http://estore.honda.com/honda/images.../T5A4B0110.png

Resonator -->
http://estore.honda.com/honda/images.../T5A4B0105.png

Yep, I'm still looking and glazing over pics and engine bays. This engine config seems different than past year Fits. Seems like there may be some difficulty making this cold air, especially with the battery location. If the battery is moved, do you (those that have a Fit already) think there is sufficient room to route intake tubing down to the fenderwell area? I'm guessing installing a filter here can be done via removing the bumper and/or accessing it through the driver's side wheel wheel area.

Just looking at that or possibly routing the tubing further back towards the firewall and downward, next to transmission (if possible). Just thinking out! It's killing me not having one to disassemble and look for myself.

http://www.aj-racing.com/ajpwr/AJRFit2/IMG_9548.jpg

Hrrmmm
 

Answering my own question in my own thread so I can reference it later in case I get dementia.

At Bernardi.com, I cross referenced the maf sensor, maf sensor gasket and bolt/washer from the 2013 Honda Fit with the 2015 Honda Fit and they ALL are exact matches.

Air Flow Meter --> Part # 37980-RC0-M01
Gasket --> Part # 37985-RAD-L11
Screw Washer (4X10) --> Part # 93893-04010-08

This is exactly what I needed to know.

Thanks for coming.....carry-on! :p

Lol, sorry you didn't get any responses, but thanks for the info. It will help somebody down the road.

I don't think you'll be able to swap piping and all from intakes for the older gens. The layout is very different and somewhat cramped in the 2015s bay. But you probably already know that.

So you plan on chopping up parts of an intake for the 2nd gen and go from there? That sounds pretty cool. Where will the intake pop out of? Near the radiator?

Edit: I had a long-winded response...

In short, yes, I plan on chopping up parts of the intake for the 2nd gen and go from there. Planning on having the intake pop out close to the driver's side fog light.

Updated with engine diagram pics. NOW I can see how this is all coming together and how it received cold-air from the grill. That's a helluva cold-air intake design Honda. I was hoping it was more restrictive than this. Interesting! Main improvements would be gains from smoothing out the airflow since the transition from the stock airbox to the maf sensor does not seem optimal. The pressure from the intake duct at higher speeds could offset this though.

Yeah you're at the stage with the GK where you're going to be doing a lot of the pathfinding as far as mods. It's good that you post your findings though, don't be discouraged from lack of responses, when more people get the car and start tinkering with it this will be important. GE had the same thing.

Honda's gotten pretty good at making intake systems recently as you've noticed.

Update!
 

Just posting another update for you guys. The maf sensor, maf sensor bolts and the maf sensor gasket are same on the 2013 as the 2015.

I purchased a stock 2015 maf sensor box to cut up if I wanted to, to make a custom intake. I also puchased an HPS intake for the 2009-2013 Fit.

Here is a picture for your comparison. I wanted to be sure the 2015 stock maf sensor inner piping diameter is the same as the 2009-2013 Fit HPS short ram intake. They are!

https://imagizer.imageshack.us/v2/85.../849/8sot4.jpg

I am NOT saying the short ram HPS intake for the 2009-2013 Fit will fit the 2015 Honda Fit. The battery will likely be in the way. I have my own plans with this. This is only for information purposes and to show you that the diameters are the same. This is all for now.

That's a lot for "now". Am watching your developements and efficiency mods as they arise. Am sure a lot others are lurking. We're all behind you!!!
Ya got me totally captivated and the results should be very interesting for all. Go babeh go!!!:lock:

Ram-Air
 

Some more ideas around this intake. Here's a pic of a PRM air filter I found in my garage. I think I have two different sizes that I were testing before.

https://imagizer.imageshack.us/v2/90...743/2325f1.jpg
https://imagizer.imageshack.us/v2/90...661/b1c166.jpg

Yes, the filter is huge I know. I never did like how small the PRM air filters are while sitting inside the casing so I get carried away on filter size. I cut up a stock 2015 maf housing earlier so that is the small piece you see next to it. It's not pretty I know. It seems like it would be simple to connect the PRM air filter to Part #3 in the 'Air Intake Duct' diagram.
http://estore.honda.com/honda/images.../T5A4B0110.png
Then, all you'd need is a reducing coupler to a 180 degree pipe that goes right into the cut up stock maf sensor housing (Or the HPS intake piece for a PRM/HPS mash-up). I may need two reducers but what the hell. It'd be tight but at least the bend will be smooth.

Also, you could purchase part #1 in the 'Intake Duct' diagram and cut off the middle section which is a rain/water guard of sorts. You could also just leave it as is, up to you. I'm considering this route as well and may be testing it out. It'll definitely have ambient air and all that air will be pushing straight from the bumper, into the PRM intake (Utilizing intake duct part #3) and right into the throttle body. I'd be at the piping warehouse this week for this if I had a damn Fit.

Just sharing for some things that may be up and coming. :p

Intake Splash Guard
 

Update! Still gathering pieces....

I purchased the intake splash guard piece from Bernardiparts.
https://imagizer.imageshack.us/v2/90...538/SL5AQO.jpg




This is the first part the air comes in contact with as far as I can see from the diagram. **See part #1**
http://estore.honda.com/honda/images.../T5A4B0110.png



I then went about modifying it to remove the 'splash guard' piece. I want to remove any restrictions that may get in the way of air going into the intake. This should allow for a freer flowing intake air. Will see!
https://imagizer.imageshack.us/v2/90...537/fIH0KD.jpg

keep in mind, just because the MAF sensor is an exact match, it does NOT mean the pipe diameter is 100% match.

I would pull out a set of calipers, hopefullly digital, and measure the diameter where the sensor sits. Lets pretend it is exactly 2 inches. If the new piping is 2.01 inches, the ecu will be reading a false signal according to its programming, and can cause minor issues. If it were trying to read 2inches, yet the pipe was actually 2.2 inches, you would almost have it undrivable (it would hit limp mode more then likely)


If it turns out to be an exact match, you can probably flip a CRZ intake around and with a coupler off ebay, make it work!

No worries! If the HPS intake does not work, remember I have a stock 2015 Fit intake maf sensor housing all cut-up and ready to go. See this piece to the far right.

https://imagizer.imageshack.us/v2/90...743/2325f1.jpg



Everything has been covered and accounted for. :nod: I just need a damn LX. Hehe!

https://imagizer.imageshack.us/v2/12...537/gyiu92.jpg

This is not going to be as quick and easy as I thought. A simple 90 degree turn towards the firewall would work but I really don't want to have the filter sitting in the engine bay. Also, underneath the battery is a small hole I could put the piping through that may be a challenge making this a cold air intake setup in the wheel well area.

Would start digging deeper today if I didn't have to drive the wife and son around and also go to work. :mad:

i definately applaud the ingenuity, but i bet if you wait a month parts will start popping up

Engine bay heat will not effect performance at all in our cars. My filter is pointed directly at the radiator, and it is a 6inch filter with a 2inch long velocity stack tapering to 2.5 inches.

It gave me lots more midrange response and it definitely improved top end pull. This was the upgrade from a velocity stack style 2.5inch filter that was behind the battery

Obviously my car is the GE8 so throttlebody placement is different, but the GKs have a stronger tune on nearly the same motor. It should respoond better to the same thing I did to my car.


BLOX is the brand, hit ebay for BLOX velocity stack 2.5 inch

Me wait? Hahaha....u got jokes. Honestly, I can't wait until I get back home. I have an idea to make this work. If u try what I'm gonna try, you'll need a smaller battery. I just happen to have one. Will update with pics.

I did get back earlier with some small tubing from the hardware store, to connect that metal intake piece to the HPS intake. Then it'll simply be connecting it all together and starting it up. Hoping for no check engine light from the maf sensor.

i bet you can run a motorcycle battery in a fit, i think the factory battery is just over 300cca

You are correct! I have an Evolution Ballistic battery hanging around.


Minor update! It appears the HPS maf intake may not be a good candidate to be used on the 2015 Fit. The intake diameter is slightly off. The intake of the maf sensored HPS piping is slightly smaller than the stock intake diameter in the 2015. Here are a couple of pics.

https://imagizer.imageshack.us/v2/50...540/e8mja1.jpg
^^ This is the stock intake with the maf sensor installed. Look at the spacing between the maf sensor end piece inside the tubing and the inner wall.


https://imagizer.imageshack.us/v2/50...633/7pfdsT.jpg
This is the HPS maf sensored intake piece. It may be difficult but see how much closer the maf sensor is to the inner wall? Even if it did somehow work, I don't want to install piping that is slightly smaller than the stock intake. Time for plan B.

I'll probably be putting the HPS piece up for sale eventually for cheap. On to the next.....


BTW: Honestly, now that I think about it, if that internal metal piece was removed from the HPS intake, the maf sensor may work just fine. I don't need the HPS piece anyways but it's just a thought. Maybe if I cut the HPS's other end off where the internal piping is welded in place, I can remove it. Maybe I'll test it out.

Update:

I utilized the stock intake piece I cut previously and added the HPS air filter to it. I had to replace my stock battery with a smaller one to make this fit. Car started up fine and is running well without any check engine lights (None was expected). I fully expect to lose low end torque and possibly a small gain way at the top of the power band. This is fine since at wide open throttle, the CVT transmission allows the rpms to stay right at the top of the rpm range the whole time.


https://imagizer.imageshack.us/v2/50...539/VAVwiw.jpghttps://imagizer.imageshack.us/v2/50...539/kW9uYd.jpg


I'll drive like this to work to get a feel for how it is and test top end on a little stretch as well. I'll test this against the stock intake next week to get everyone stock 1/4 mile numbers against just using this intake piece. I plan on lengthening this piece to a larger diameter pipe. This should help get back and possibly gain some low end torque without a compromise to my top end. This is all for now. :thumbups:

BTW: Gonna post this up in the 'Do-it-yourself' thread as well as it may be easier for folks to find in the future.

Here's an article that is interesting to read. This should give you some idea why I plan on testing different intake pipe lengths.
Pipe Lengths Dyno



Here is a setup from Cipher that I want to build an intake like -->
https://fbcdn-sphotos-d-a.akamaihd.n...02384672_n.jpg
I plan on utilizing the 3.5" PRM air filter I have. The inches will close by .5" each time it hits a bend until it gets to the 2" maf sensor. Would like to attach it to the stock ram air piece. 'Pipe Dreams' Will work on it next week.