[Combatspace]

A drop in filter isn't going to do anything substantial. Removing the resonator gives the air a more direct path to your intake with less restriction and therefore will improve performance.

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[Pieee3]

why you buy a cai if you did this before isnt it the samething or did you want the bling in your engine?

The CAI adds more of a growl when you step on the gas, plus a clean engine bay is a happy engine bay :dance: But yea taking out the resonator is one of the best free things you can do

 

[gatorgrip]

I had a drop in k&n and recently switched to injen cai w/tbs. my butt dyno almost feels like i lost some power. No cels or any problems. I wasn't expecting much but im definitely disappointed. Im in vegas and its starting to hit 90 degrees. I had a short ram on an ek and never had heat soak issues. It almost feels like its too much of a distance for air to travel with this cai.

 

[nchykor18]

im getting a ebay cai soon. hopefully the power increases a lil

 

[jamesmang]

Lol. This is what I did too. Except I put a screen in front of the hole just so that no big debris can get in. Don't mind the HPS sticker. Its been gone already.
image

^so this is jus for sound? and im a little confused on what exactly to remove

Guy at the shop I go to told me about this as well - I was gonna do it, but I've been reading that the resonator acts as a way to control the vortex of air travelling into the intake - or something like that - and removing it may cause "turbulence" in the way that air moves around. Still not sure whether that's right or not.

Also, the drop-in air-filter, been reading a few threads here on this subject, been getting a 50-50 impression on whether it's worth it or not. Some say the drop-in is a lot cheaper and has similar results to a CAI, others say it doesn't do anything, other than the fact that it's washable.

IDK, the more I'm realizing it, the more I think it just comes down to 'don't know till you try it' kind of thing :think:

i have k&n drop in on my fg1 and i feel like it does nothing honestly, sometimes i think its a little louder or smoother ride but it might just be placebo

 

[Combatspace]

Holy thread revival batman!

@JamesMang: By removing the resonator and intake piping forward of the filter box, you create a Short Ram Intake effect, which pulls in warmer air from the engine bay but also has less restriction. You likely won't feel the difference in power, but your engine will breathe better and your ears will thank you. As mentioned, probably the best free mod you can do. Like I said before, a drop in filter isn't going to do much but allow your engine slightly more air through the same restrictive, turbulent intake piping.

 

[JohN989NL6]

I just had a question for r18 ebay cold air intakes,
people say the filter is trash, so they buy a different filter for a cheaper route than getting a brand name CAI?

 

[Apple_juice]

I just had a question for r18 ebay cold air intakes,
people say the filter is trash, so they buy a different filter for a cheaper route than getting a brand name CAI?

Honestly if I were you I would just spend the extra money and get a name brand. The only reason I say this is because usually the knock off brands have issues. I'm speaking from experience, I bought a pair of headlights from eBay just for a diff look. They blew out about 2 months after install, end up putting stock ones back in, long story short headlights , plus install and uninstall was like almost 500 all together could have gotten a retro fit with that.

 

[Combatspace]

I just had a question for r18 ebay cold air intakes,
people say the filter is trash, so they buy a different filter for a cheaper route than getting a brand name CAI?

Generally, yes. However the eBay intakes are more for engine bling than performance. They replace filter because it either looks better or they think the filter is going to change how sh*tty the cause was in the first place.

Buy a reputable brand for performance gains.

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[Pieee3]

I just had a question for r18 ebay cold air intakes,
people say the filter is trash, so they buy a different filter for a cheaper route than getting a brand name CAI?

I bought a ebay CAI and im even using the filter until i need to change it, lets be honest spending 300$ on a CAI wont really get you any performance anyways so might as well cheap out.. The only reason ill spend the money for a brand name CAI is because its CARB legal but i still dont care.. All the intake is doing it taking air from one place to another so why spend 300$ if you can spend 60$


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[-raqh-]

Holy thread revival batman!

@JamesMang: By removing the resonator and intake piping forward of the filter box, you create a Short Ram Intake effect, which pulls in warmer air from the engine bay but also has less restriction. You likely won't feel the difference in power, but your engine will breathe better and your ears will thank you. As mentioned, probably the best free mod you can do. Like I said before, a drop in filter isn't going to do much but allow your engine slightly more air through the same restrictive, turbulent intake piping.

I know it may sound silly cause its just removing one fitting but i'd like to know which one exactly... Been looking all around and can't find a DIY on the resonator piping removal... Anyone?

 

[Davidnyc80]

^so this is jus for sound? and im a little confused on what exactly to remove



i have k&n drop in on my fg1 and i feel like it does nothing honestly, sometimes i think its a little louder or smoother ride but it might just be placebo

For sound? Sure you can say that!! Lol. But here it is circled in red is where the part that I took off. I also drew it in blue just incase you miss it

 

[-raqh-]

See, it really helped because i thought the fitting to remove was lower near the resonator itself.

Thx man.

 

[-raqh-]

Btw what kind of mesh did you use to cover it? Is it the hydro mesh people use on their CAI or ..?

 

[TheIncident88]

All the intake is doing it taking air from one place to another so why spend 300$ if you can spend 60$

You could say a cylinder head and exhaust system are just moving air from one place to another too. Yet some naturally aspirated engines make twice as much power as others for a given displacement. There is a lot of engineering that goes in to designing a good system that most people don't understand, a slight difference in a bend radius could have a large impact on flow rate for a specific rpm range.

You also have to keep in mind that these cars calculate injector duration based on the MAF sensor, which is calibrated for the original intake. The ECM will correct your fueling +/- 30% based on O2 sensor feedback in closed loop, but when the engine is cold or at heavy throttle, you are not going to be running at the right A/F ratio with some random eBay intake. Performance and reliability can both suffer.

 

[Davidnyc80]

Btw what kind of mesh did you use to cover it? Is it the hydro mesh people use on their CAI or ..?

It's screen door mesh. The steel one. I bought a foot from a local hardware since home depot doesn't have it. Lol. Don't use the plastic one, it might melt. Good luck!!

 

[Scuba102]

Now from what I understand these screen door "screens" can restrict airflow up to 50%. So it may be better in some circumstances that letting your air filter do all the work itself without the pre screen. Has anyone noticed any significant increase in MPG with the CAI versus the RAI and Vice Versa?

 

[Davidnyc80]

Now from what I understand these screen door "screens" can restrict airflow up to 50%. So it may be better in some circumstances that letting your air filter do all the work itself without the pre screen. Has anyone noticed any significant increase in MPG with the CAI versus the RAI and Vice Versa?

The screen that you see there is just to keep the debris out of the box. I don't think it restricts anything other than debris. Again, for me it was just all about the sound. Even if we put a real CAI or SRI on our little R18 the most gain we will get I believe is 5HP??? Increase?? Dunno I never dyno my car.


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[falkon57]

I have an injen cold air intake on my 2007 R18 and I dynoed 116WHP

 

[hfp sohc]

I did this and honestly the best 1.25$ spent on a screen at dollorama.....awesome sound with the k/n drop in filter............i love it at 3000rpm............and at woot too........lol