Have an USA Spec 2010 Honda Fit Sport Manual.


These reviews are my opinion.


HPS Short Ram (HPS 27-102P)

Kept this intake.

Power: Fastest of bunch
Power from idle to red-line
can feel Vtec kicks 1st->3rd (don't drive fast enough to feel 4th or 5th)
Informal, unscientific runs of 5-60 MPH in 9.1 secs (stock: 10.5 secs)

Instructions:
Fairly straightforward

Design:
simple and effective
why include heat shield if it doesn't add HP?
Pipe is braced at mid point
Silver pipe (reflects heat, does not absorb it)

Sound:
Loud under load or at high RPM, tolerable though.
Price:
<$150 delivered from Amazon.

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K&N Typhoon (69-1017TTK)

Returned this intake

Power:
Power from idle to red-line - less than HPS though
Can't really feel the vtec kicks much, not as strong as HPS
Informal, unscientific runs of 5-60 MPH in 9.5 secs

Instructions:
Best of bunch but K&N thinks you should remove radiator hose - this is Bogus in my opinion.
Confusion and unclear around step 13 - the weird collection of radiator hose and crankcase hose.
Can see video which is helpful

Design:
Way too many parts that you have to piece together yourself.
Heat shield that doesn't add HP.
Why are so many things Black - encourages Heat Soak
Has a Large Obstruction in air path. This restriction is probably why it does not make as much power as the HPS, despite its Black Heat Shield.
See attached photo.

Sound:
Loud under load or at high RPM, tolerable though.
Price:
Up to $280.00 or so on Amazon. I got it $71 off though as Amazon was running a special.

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PRM Jetstream Intake

Sold this intake

Power:
when the engine goes on Vtec, its like a little turbo comes on - you definitely feel it, strongest kick of group.
Informal, unscientific runs of 5-60 MPH in 9.6-9.8 secs
Bogs badly when you punch it from idle but boy does it have a high RPM Rush!
Only time I noticed the bog is on the 5-60 MPH run though, so in real world, probably not much of an issue.

Instructions:
Very simple to install. Easiest of the bunch.

Design:
Very simple and elegant.
Few pieces in kit

Sound:
When the engine goes on Vtec, this intake gets unpleasantly, make you deaf loud.
You'll be a hero at the autocross events though, sound gets a lot of attention.

Price:
Around $240 or so from Jerry of PRM Jetstream






I have not received anything of value from any of these vendors. The HPS vendor (Max) was very helpful to me. He took a picture of a HPS Intake showing it does not have intake obstruction.


I hope someone finds this info. useful. I sure spent a lot of time, money and energy figuring it out.

Below is the obstruction in the K&N pipe. This obstruction is probably why K&N can't match the power of the HPS intake.

 

Thank you for the review. It was informative.

I don't know what is up with that obstruction. That seems very odd.

 

Thanks for review and going so far to review 3!

I feel most of us are too cheap to review 1 lol.

I did the DIY SRI here: https://www.fitfreak.net/forums/fit-...am-intake.html

Sound Here:
Although mine is slightly shorter. It was ~$80-90 with a dry filter which is half the cost of buying one. Since none of the ones worth considering are CARB legal anyway might as well make it as easy to remove as possible .

It improves sound and throttle response if anything.

The obstruction probably relates to the MAF sensor. If the flow past the MAF is too different from stock it could cause your engine to run rich or lean. Lean if larger, rich if smaller. Its kind of a problem because any aftermarket intake needs that size to match stock. Which is also why my intake is simply the stock MAF tube with a Filter on the end. The stock MAF tube is nearly ideal for minimizing resistance. The only way to do better is to make your own intake and tune it so that you account for the different velocity for a larger MAF sensor tube, but thats relatively expensive for most I imagine. I also am assuming that the MAF sensor tube is the largest resistance in the pre-throttle body section of the intake.

 

Your welcome.


Here is an inexpensive Short Ram that looks promising. Same design as HPS & K&N.


http://www.ebay.com/itm/Racing-SRI-Short-Ram-Air-Intake-HONDA-FIT-1-4L-1-5L-2009-2010-09-13-Cold-Filter-/191474045109?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A2010%7CMake%3AHonda%7CSubmodel%3ASport&hash=item2c94be10b5&vxp=mtr

 

Long tubed intakes give you a higher torque in lower rpm range. I have been doing a ton of reading on the affects of intake tubing length and diameter vs horsepower. Long tubed intake also works with intake sound wave resonance to give you a 'spike' in hp somewhere in your power range.

Influence of intake pipe length and diameter on the performance of a spark ignition engine
^^I actually purchased this citation.

The long and short of intake systems.

Intake Runner Length Tubing

Detailed Data on the Effect of Different Intake Runner Lengths


^^This is just some of the information I have read about which is why I designed my own intake for the GK the way it is. It's why it gained 2-2.5mph vs the stock intake in the 1/4 mile.

 

Awesome you did this research.


Perhaps Honda has a job for you?

 

Thank you for testing all of these!

 

Hello all, i am new to forum.i have imported my Fit Hybrid RS from Japan.
i am interested in buying HPS SRI but i fear the K&N filter included in it is oil based filter.i want dry one.can any body confirm is it Dry or oil based?

 

The K&N Filter that comes with the HPS SRI is Oil Based.

 

i was searching SRI's with dry flow filters and found Takeda.it has same shape as HPS but i dont know how will it perform? any light of how good/bad Takeda is or quit vs loud?

 

Did you ever experience a CEL after installing any of these intakes

 

Nope. Got about 80k miles on the HPS intake. Installed it in 2013.

Found some photos here:

Earplugs are good to wear when driving hard. These are the best I have found:

Best wishes!

 

Yes i got the CEL juist after few minutes of driving. may be because mine was a hybrid Fit so it was supoer sensitive to the things.
So much time passed since, now its K24a2 swapped and a turbo on it. Just the opposite of a Hybrid LOL.

 

I have the HOS on my GE8. no CEL ever.