K&N Cold air.
 

So i know a lot of you guys run a k&n cold on your blazer's! Just wondering if in the kits you bought, did it come with a new Mass air flow sensor? Because K&n are oil-based and will gum up your stuck mass air sensor. I had a drop in K&n and i had to take it out because it making my blazr run rough and check engine light was coming on. I would like to get a cold air but only if if comes with a new mass airflow sensor.

RE: K&N Cold air.
 

Non of the Instake kits come with Mass air senors.... You should look into AEM or Fram Boost intake systems since they use Dry Flow filters which require no oiling. Try to get a Fram unit because it comes with everything you need to install it and also includes the cleaning solution to clean the filter after a year of use. AEM makes the Fram Boost instake but the Fram unit is cheaper to purchase.

RE: K&N Cold air.
 

So how are all these people running K&N cold airs. lol do they constantly have to change and clean there mafs?

RE: K&N Cold air.
 

Any MAF sensor will get gummed up by an 'over' oiled air filter. Some quick cleaning and you're back at it. This should only happen if you get a new over oiled filter or you over oil the filter when you clean it. I have run K&N filters on many MAF vehicles and they all reacted the same way when there was too much oil on the filter itself. I don't have one on my current DD, but with any of my old vehicles, I would clean the filter, then use my shop vac to dry it. Apply the oil, then again, use my shop vac to suck out any excess oil before reinstalling. These filters do not need tons of oil to clean the air.

If you are worried about the oil, AEM (Fram boost) intakes use a dry gauze filter media so there is no oil that can affect your MAF sensor.

RE: K&N Cold air.
 

i havent had any problems in the ~3500mi ive had mine

RE: K&N Cold air.
 

I havent had any problems with the K&N drop in filter I have had in my last 2 vehicles. I have put around 10,000 miles on the last car and about 13,000 on the blazer. Now its time for a cleaning of the filter and I am definately going to do what swartlkk said about the shopvac.

RE: K&N Cold air.
 

I was right at 10,000mi when the drop in filter made my car run bad and send the chack engine light on.

RE: K&N Cold air.
 

yeah its getting a little worse gasmileage right now but I think its cause all the short cold trips, and my tires were at 6 psi less than I thought they were (and with new BFG AT's I am sure that makes a difference). Plus it looks like its time to clean the K&N filter, hopefully I should be able to get that done before my 600 mile roundtrip here this weekend.

RE: K&N Cold air.
 

I have a K&N FIPK in my Blazer and have never had a problem with the oiling of the MAF sensor. I've used K&N in every car I've ever had and not had a problem.

RE: K&N Cold air.
 

Thats really wierd because i have never oiled my drop in filter. I pulled it out of the box and put it in and havnt touched it since then. im going to clean it and see how it works.

RE: K&N Cold air.
 

I was wondering there....it comes oiled from the factory, but at some point you have to clean it and re-oil it.

RE: K&N Cold air.
 

Ya well i will clean it and probably just end up getting a cold air.

RE: K&N Cold air.
 

a 360degree filter is the best way to go and all filters when you first get them come with oil on them to help stop dirt and debris and when a vehicle is cold it runs richer and low tires are horrible for the tires and gas milage
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RE: K&N Cold air.
 

i have a K&N filter and im not having n e probs at all...go to advance auto parts and get some MAF cleaner clean the MAF up nice stick it back in u wont have n e prob. at all and dont forget to clean the filter it self...that will be a prob...and K&N makes a special kit for OFFROAD the FIPK kit is not for offroad but street and strip

RE: K&N Cold air.
 

I had heard about about the MAF failing due to a K&N also. However it does seen to be very isolated. I have also have a friend who had a black oily film on his MAF sensor with out running a K&N. The MAF was working with out producing a code. I had to replace my MAF and the dealership blamed the K&N. They said it would not be covered by the warranty, so I called the warranty company to plea my case. They told me that the dealers say that to pass the blame off and went on to say that they have no problems replacing the MAF. They pointed out that they are replacing allot of MAF that are new and the owners use the AC Delco filters.

http://www.knfilters.com/MAF/massair.htm

With the K&N cold air kit, the engine is sucking in hot air from the engine compartment. However with the stock air box it is sucking in cold air forced into the box from a inlet behind the head light. Other than less restriction are you really taking advantage of the cold air?
Just wondering since I would like to put in a K&N cold air myself.

RE: K&N Cold air.
 

with a generic ebay-style CAI, the filter is sucking in hot air. with a CAI from a reputable comapny (K&N, AEM, Volant, AiRaid...) there is a heat shield the cuts off the filter from the rest of the engine bay. thats not to say that ebay ones are worthless though. if you want to make your own heat shield it will certainly work. TripleBlackBlazer made a how-to and he made his own CAI. also the K&N shield conforms to the shape of the hood and has a big rubber-ish seal along the top of the shield that creates a nice seal with that noise-supressor thing on the underside of the hood.

the stock airbox gets its air from the hole in the rad support behind the headlight (circled in yellow) while the K&N has about 1sq ftof the rad support to get its air from. i have been thinking about drilling out some more holes to allow more air.

http://aycu36.webshots.com/image/447...5771207_rs.jpg


http://aycu11.webshots.com/image/437...7027855_rs.jpg


http://aycu19.webshots.com/image/417...6221019_rs.jpg


http://aycu04.webshots.com/image/423...5692393_rs.jpg


i can get more pics if anybody wants. it seems to be a good upgrade especially if you have some sort of aftermarket exhaust. headers and a larger y-pipe will help the most but a CAI and catback exhaust will help out

RE: K&N Cold air.
 

How efficient are these CAI (looking at the K&N in particular)?? I mean i know it lets the truck breath better, but the filter is still located inside the engine bay. Does the housing for the filter really help keep the engine heat out even though its in the engine bay??

I have a Injen CAI on my Subaru and the pipe runs out of my engine bay into my front fender/bumper where the cone filter is located. Which seems like the most logical place to get cold air, out of the engine bay and low to the ground.

RE: K&N Cold air.
 

So long as you seal the filter completely from engine bay heat so that it is drawing in outside air, it will function much the same as the intake on your sueby.

RE: K&N Cold air.
 

I wouldn't try going throughvery deep water with a filter mounted down there.:)

RE: K&N Cold air.
 

get a splash guard :D

RE: K&N Cold air.
 

i don't try to drive through rivers or anything. lol. i do a good job of avoiding flooded areas. there was this one time i came upon a flooded street and i decided to take a detour rather then risk driving through it.

i purchased the car with it on there, it makes for a good summer intake and i'll probably purchase a stock intake for next winter, get a retuned map for that intake and switch maps on my tuner program when i switch intakes.

RE: K&N Cold air.
 

^
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[sm=loveeyes.gif]

RE: K&N Cold air.
 

http://a509.ac-images.myspacecdn.com...19a8d39eec.jpg
thanks. yeah i love this car, mountain and canyon roads are so much fun to drive in an AWD turbocharged car.

RE: K&N Cold air.
 

dude where do u live to be cruzin on those kinda roads? cali? cuz i wanna find some of those roads :D

RE: K&N Cold air.
 

does the k&n housing for the intake do a good job of sealing it off from the rest of the bay? or would i have to do some additional modifications to make it seal?

i'm looking to get the k&n 57 series FIPK for the 01' blazer
http://www.knfilters.com/search/prod...Prod=57-3017-2

RE: K&N Cold air.
 

yeah cali here.

highway 1 is the best drive i've ever been on. good scenes, nice straight aways, and some really good twisties along some cliffs. theres also a mountain called hamilton in san jose, ca. drive is nothing but twisties for about 2 hours, a lot of signs that post really low speeds through the turn. try taking a hairpin turn thats posted at 10mph, but your hitting the apex of the turn at 30-35mph, what a high.:D

RE: K&N Cold air.
 

hahahaha wooooowwwwwwwwwwwwww thats amazing. i need to take a trip out there but i need a good driving car first :D i dont think my blazer can take a hair pin turn at 30. we got some nice lil twisty roads out here in wisconsin around holy hill its short tho the whole drive takes up about 1-2 hrs its a good scenic drive

RE: K&N Cold air.
 

IMO it comes with the most "complete" heat shield, it seals against the hood very well and on both sides (fuse box, and rad support). the bottom has about 1/2" of space between the shield and the fenderwell but thats nothing a few strips of duct tape cant seal off

the hole where the intake pipe goes through (2nd pic) leaves some space around thepipe and, while i havent done anything to that part, im sure duct tape could fix it too.

http://aycu28.webshots.com/image/488...8439457_fs.jpg

http://aycu35.webshots.com/image/501...3753891_fs.jpg

RE: K&N Cold air.
 

if you all don't mind I'd like to ask a few k&n questions here too. I've always wanted to try a k&n CAI for my 94 s10blazer but I'm not so sure I want to go with the box stock k&n shape that they recommend for my blazer as its not a air tight seal for the heat shield and plus the filter kinda just sits in there. I imagine that if the filter is fastened so no air goes around it would be better performance but thats just my amateur's 2cents. If there wont be a performance gain between the stock k&n or cone then I'll just stick with the air intake system and heat shield i got and just put a k&n in it.

RE: K&N Cold air.
 

I have used K&N filters on several cars and on our 95 blazer for over 100k miles. The important thing is to clean them with their cleaner and re-oil with K&N oil. I only use the squeeze bottle oil and am conservative with the oil, it really does not take much to soak the filter, better to go back and add rather than too much. The spray bottle oil puts on way too much oil.

David
95 Blazer
4.3L, 2 wheel drive
147K miles
Purchased new April 15 1995.