performance air filer

JDMLIFE · 06-12-2008, 08:41 AM

does anybody have the drop in air filter? how well does it work i dought you can really feel anything

seppuku27 · 06-12-2008, 08:46 AM

Theres the K&N drop in one along with the TRD one. I think its better just to get a CAI. You get rid of all the extra piping along with silencer. I bet if you did just the drop in you will want a CAI next.

JDMLIFE · 06-12-2008, 08:52 AM

ha ha i thought so

seppuku27 · 06-12-2008, 09:00 AM

There are a ton of CAI options right now. Just save up a little money to buy one. I got the Fujita CAI and it sounds great and added just a little more pep. I also got the TRD intake grill so it brings more fresh air in. Only an extra 5 dollars.

AAG · 06-13-2008, 11:45 AM

Where did you get the TRD grille inlet?

seppuku27 · 06-13-2008, 01:59 PM

Just go to your local Toyota and ask them to look up the "TRD air inlet grill". Its on back order so it will take a few weeks but its only 5 dollars.

jisu009 · 06-13-2008, 03:18 PM

not sure on the 2.4L as of yet, but after dyno testing numerous short rams, CAI's and a dozen or so different filter configurations on my ITA/F prod Honda, I have found that for hp/$ is best found in a drop in K&N filter. The most gain I ever found was with an AEM CAI and that was 3 peak hp and about a ft lb of torqe.....hardly anything you would ever notice on the street.

seppuku27 · 06-13-2008, 04:49 PM

Theres a couple dynos floating around of various CAI's and most made about 6-9 hp more. Haven't seen a K&N drop in filter.

Your going to see more of a gain on a restrictive stock intake or a nicely designed one from the factory.

If your looking for more HP I would look into a full exhuast not just an axle back. The cat is huge and looks like the most restrictive piece on the exhuast.

rosconey · 06-13-2008, 06:39 PM

i did a k/n- not so much for the power-but the cost of replacement ones was way more over the life of the ride than a k/n will be-
the cheapest i found for my corolla were about 23$-paid 50 for the new one and its good for a million miles if cleaned properly,the cleaning and reoil kit was 20 bucks i think

Invertalon · 06-19-2008, 05:22 PM

Do your car a favor and stay away from K&N.

I have an aFe Dry Flow S in my xB now. Just got it the other week. aFe makes the TRD filters, but since I did not want an oiled filter I got the dry, does NOT use oil.

K&N has horrid filtration. Oil tests prove that.

VC17 · 06-19-2008, 06:55 PM

I'm thinking of going the AFE dry flow route too.

jahfakin · 06-22-2008, 03:06 PM

Quote:

Originally Posted by Invertalon

Do your car a favor and stay away from K&N.

I have an aFe Dry Flow S in my xB now. Just got it the other week. aFe makes the TRD filters, but since I did not want an oiled filter I got the dry, does NOT use oil.

K&N has horrid filtration. Oil tests prove that.

years ago, i use to use K&N in my Mustang GT. my MAF screen was always covered in thin film of fine dust, that made it pass the air filter. my mechanic told me to stick with Paper filters, they filter much better, and you don't really loose any noticeable HP. ever since, I stuck with paper.

mikel · 06-24-2008, 01:40 PM

Does anyone know for sure if the K&N helps with HP?

seppuku27 · 06-24-2008, 05:22 PM

Quote:

Originally Posted by mikel

Does anyone know for sure if the K&N helps with HP?

There is no dyno that I have seen for it. I bet it would give you a hp or two but nothing amazing.

whiteboyslo · 06-25-2008, 07:15 PM

generally speaking, i wouldn't buy the K&N for the purpose of increasing HP. will you gain a HP or 2? likely, but what you're really gaining is the cost savings of not having to buy the paper filter over and over again. in that aspect, it's worth it.

and a far as the 'K&N is bad for your engine' thing, i have YET to personally see an engine fail solely from using ANY kind of air filter vs another. i've used K&Ns for years in many, many vehicles with no ill effects, and i don't plan on stopping anytime soon.

Mike

JDMLIFE · 06-26-2008, 01:44 AM

i think im gonna go with the typhoon intake from K&N, the only reason is i dont wanna tear apart my bumper for the TRD cold air and K&N probably has more HP increase than TRD and the K&N is lifetime as the TRD is probably not since its enclosed in a black box (i think theirs probably a paper element in it) http://www.kandn.com/dynocharts/69-8613.pdf thats the link to the dyno sheet for the typhoon and they dont have one up for the stock replacement

seppuku27 · 06-26-2008, 09:02 AM

Quote:

Originally Posted by whiteboyslo

generally speaking, i wouldn't buy the K&N for the purpose of increasing HP. will you gain a HP or 2? likely, but what you're really gaining is the cost savings of not having to buy the paper filter over and over again. in that aspect, it's worth it.

and a far as the 'K&N is bad for your engine' thing, i have YET to personally see an engine fail solely from using ANY kind of air filter vs another. i've used K&Ns for years in many, many vehicles with no ill effects, and i don't plan on stopping anytime soon.

Mike

He didn't say that it would cause your engine to fail. He said that it clogged up his MAF with oil. Which would throw the A/F mixture off and could case stalling and other problems. But K&N filters also suck in alot more dirty than other filters.

whiteboyslo · 06-26-2008, 06:06 PM

Quote:

Originally Posted by seppuku27

He didn't say that it would cause your engine to fail. He said that it clogged up his MAF with oil. Which would throw the A/F mixture off and could case stalling and other problems. But K&N filters also suck in alot more dirty than other filters.

yeah, people definitely seem to have an issue with oiling the K&N after cleaning. they go nuts with the oil to the point the thing is dripping wet, throw it in, and then wonder what happened. i just hate to see a brand name get dragged through the mud when, really, it's just fine.

Mike

xbhax · 04-20-2009, 09:49 AM

i use the k and n air filter in my jeep and i got about 2 mpg out of it as well it has paid for itslef coming off the trial several times. And if you dont "race" your xb and are looking for a littl ebit better gas milage and no not to oil the death out of a k and n air filter then go for it. I think its a great product. if your going ot race your xb get a CAI. I dont race mine. I want gas milage so K and N is the way to go.

ScionFred · 04-20-2009, 09:50 PM

No two cars will respond exactly the same to a drop-in hi-flow filter like K&N. It depends very much on the oem airbox design and engine air intake requirements. In general though there is little performance to be gained from them. OTOH, a CAI can often be the biggest bang for the buck engine mod you can do. The TC airbox is different from the XB2 but still quite similar. In independent dyno testing of TC air intakes, the K&N drop-in lost 1 whp while the best CAI gained 8 whp. Import Tuner tested the AEM CAI on a XB2 and it gained just shy of 9 whp.

FWIW, I highly doubt that the K&N filter actually lost hp. More likely it was something else but given the positive results from all the intake replacements, it certainly appears that the TC and XB airboxes are a lot more restrictive than their paper filter media.

ScionLife View topic - KillertC.com/GSCMotorsports.com Scion tC Intake Test !!!!

2008 Scion xB RS 5 - 2.4L I4 - Import Tuner Magazine