View Full Version : K+N filter....consensus?
Hey all,
What's the consensus on a K+N filter then?
Did we all decide that it was too risky to the MAF sensor?
Do people reckon it makes a descent change?
Would I be recommended in getting one for my chipped Leon?
Cheers - R>
all i can say u to is keep away from oiled filters.
i recently added a 57i kit to my cupra, and within 500 miles it had knakered the MAF sensor. it was running 35bhp lower than norm and was using twice as much fuel.
luckely for me i managed to blag seat into changing it as ive had a few probs with other things i just added one of these to the list.
needless to say the k&n has now got a new home in my shed where it cant do any harm.
did yo inform K&N of this problem.
if this is the case surely other cotten gauze filters are bad. that way your really only left with gettign a blitz stainless steel filter then as foam tends to break up and get swalloed by the engine
iam afraid i didnt. the reason being that i got the air filter cheap off somone that works for K&N. so if i went and complained then it would prob cost him his job.
yes from what i have heard, a stainless filter is the only way to go, personallt though i am now gonna stick withh the standard air box, because besides an increase in noise the induction kits do not really have much affect on the 20VT engines
ibizacupra
29-05-2002, 08:21
Originally posted by c2pra
iam afraid i didnt. the reason being that i got the air filter cheap off somone that works for K&N. so if i went and complained then it would prob cost him his job.
yes from what i have heard, a stainless filter is the only way to go, personallt though i am now gonna stick withh the standard air box, because besides an increase in noise the induction kits do not really have much affect on the 20VT engines
Not true.
Any over oiled filter can cause tracking over into the MAF.
Stainless filters like Blitz have no means of effectively filtering fine dust. We have already had one guy on this forum lose his throttle actuator due to it seizing up through dirt ingress past his Blitz. 2 other people have also ordered alternate filters after being dissapointed in Blitz's, as the Blitz has no means of cold air induction, and in a hot turbo engine bay, power loss through heat is more than performance gains from the filter.
The Cotton gauze flters I sell within the Hurricane Induction kits are oiled, but in the 2500 miles I have personally been using one, there has been zero oil tracking out of the filter.
As for gains, I have run dyno tests and found some gains. It can be had. see>> http://www.badger5.demon.co.uk/bin/hurricane-v-std-small.jpg and http://www.badger5.demon.co.uk/bin/std-vs-hurricane.PDF
regards
Bill
My stainless steel filter has oil retention. no noise from it though
cupra fan
29-05-2002, 10:03
Don't know if this will help anyone! But have been studying airfilters for the past month trying to find the best aftermarket (effective filtering) airfilter. Even got some independant info from mira (motoring test centre) The general opinion out there,oil based flow slightly more than foam based,but foam based will trap more crap and hold more over a longer time period.
k@n style have the opinion that the size of particle that go through there filters are so small that they will do very little harm to the engine and in most cases burn up! (this point is heavly disputed) of the foam filters the one to get is itg,it filters better than anyother aftermaket filter,but not quite as much as paper.will not leave any oil in induct tract or maf.Most research out there come out with very similiar outcomes- panel filters will smooth out a engine significantly with small power gains. Cone filters will do both but at the expense of noise.
All of the above is only my personal opion from data gathered
hope it helps someone out there,these cars cost a lot of money
and was not prepared to fit any old filter without my research first !
ibizacupra
29-05-2002, 13:14
Originally posted by cupra fan
Don't know if this will help anyone! But have been studying airfilters for the past month trying to find the best aftermarket (effective filtering) airfilter. Even got some independant info from mira (motoring test centre) The general opinion out there,oil based flow slightly more than foam based,but foam based will trap more crap and hold more over a longer time period.
k@n style have the opinion that the size of particle that go through there filters are so small that they will do very little harm to the engine and in most cases burn up! (this point is heavly disputed) of the foam filters the one to get is itg,it filters better than anyother aftermaket filter,but not quite as much as paper.will not leave any oil in induct tract or maf.Most research out there come out with very similiar outcomes- panel filters will smooth out a engine significantly with small power gains. Cone filters will do both but at the expense of noise.
All of the above is only my personal opion from data gathered
hope it helps someone out there,these cars cost a lot of money
and was not prepared to fit any old filter without my research first !
I use ITG filters on my modified 16v motor and oil tracks right the way down th einlet tracts BIG STYLE. Without oil these filters let in dust and cost me an engine rebuild. Oiled, they work. They only last for about a year or so, before becomign brittle, and themselves becoming a dirt/particle contaminant themselves.
I have to disagree with your ITG comments from my own experience of them since 1997.
Your research is from what and where?
Bill
I fitted the K&N replacement type about a 1000miles ago and I'm very pleased with the results.
I have to watch the revs. It's very easy to end up in the red.
Fuel consumption; possibly a little improvement, but too early for anything conclusive.
Hi folks , the hurricane filter on my chipped cupra (ibiza.) is great, Its easy to fit and is well made. IM SURE BILLS GOT SOME PHOTO'S IF YOU ASK !!
:cheers:
ibizacupra
29-05-2002, 17:00
Originally posted by terry
Hi folks , the hurricane filter on my chipped cupra (ibiza.) is great, Its easy to fit and is well made. IM SURE BILLS GOT SOME PHOTO'S IF YOU ASK !!
:cheers:
Pictures here>> http://www.badger5.demon.co.uk/bin/hurricane-1.jpg
http://www.badger5.demon.co.uk/bin/hurricane-2.jpg
http://www.badger5.demon.co.uk/bin/hurricane-3.jpg
Latest supply of these have Red housings (red anodised)
(a supply issue.. Red or nothing at the moment)
regards
Bill
Skoda4x4
29-05-2002, 17:40
Now my DV is blowing off ( excuse the pun ), I decided to mess with something else.
I fitted a Pipercross Induction ki from a 225bhp TT last night.
I'm not too impressed, makes that growling noise low down as you would expect, have not noticed any changes in drivability or anything. Think I will swap back to the standard airbox, nothing wrong with it, its quiet and keeps my stealth mode in tact.
Great if your a wee mad metal Nova geek who thinks his 1.4 SR's quick
To spend 90 squid on one..................nah:rolleyes:
Off to Jabbasport for re-mapping on 29th June, taking various filters with me to get dyno readouts. Will post results. Oh the 220bhp will be nice. (before anyone asks I have the bigger turbo as standard :D )
here is my stainless steel filter.
http://upload.turbosport.co.uk/gallery5/20026121574676214.jpg
ibizacupra
02-06-2002, 10:47
Originally posted by vibrio
here is my stainless steel filter.
http://upload.turbosport.co.uk/gallery5/20026121574676214.jpg
I would say thet it would take more than a small pipe pointing at the filter to overcome underbonnet heat being drawn into the induction.
Heat is a real killer for power.
Bill
turbo at back of engine. engine bay stays really cool even in traffic. lots of ventilation. I was consernd about the heat but it's fine. filter stays cold. but thanks for your consern :cheers:
ibizacupra
02-06-2002, 15:46
Originally posted by vibrio
turbo at back of engine. engine bay stays really cool even in traffic. lots of ventilation. I was consernd about the heat but it's fine. filter stays cold. but thanks for your consern :cheers:
The Ibiza 20VT engine bay does'nt stay cool at all.
It gets very hot around town.. or if its been stood after a drive. Serious heatsoak into almost every component.
I was swapping my DV today back to the stock one to do some tests and after only a small drive, 15-20mins when I came back to put back my forge DV the OE one was cooking! Seriously hot. It is no wonder the diaphram ones fail early considering the heat they get subjected to. Rubber softens with heat and with constant open close during driving I can easily imagine the failure mode.
Your radiator will be "radiating heat" also right in front of your air intake.
There is only one reliable way of ensuring a cool air supply to the engine and that is to duct it in and for the airbox susyem to only be able to breath non-engine bay air.
There is more space in your engine bay compared to the Ibiza's 20VT one, so I agree there is more air space for circulation... But just think on where the air gets blown into, when your radiators fan cuts in!
Good luck and enjoy.
regards
Bill
onyl driven the car in winter so far adn when it is cold outside. the temp hardly moves when it is cold. so far it's not got hot enough to put the fan on in traffic but then you don't need lots of power when you sitting in traffic do you.
the original air box never even had a link to the outside. just a pipe to take it to the side behind the drivers side head lamp???
a heat shield which can be fixed to the airbox attachment points is easily made. just not got round to making it
ibizacupra
02-06-2002, 16:47
Originally posted by vibrio
so far it's not got hot enough to put the fan on in traffic but then you don't need lots of power when you sitting in traffic do you.
LOL
Not got hot enough to switch the fan on?
amazing!
20VT is on a lot.
Very different engines.
Wait until the summer kicks in... (now hows that for wishfull thinking :D)
The tell tale signs are erratic idling when warm air is being injested. you'll know when it happens, but then again you'll know the cure aswell. :)
regards
Bill
On that note we had a really hot day up here yesterday, my temp gauge was reading 28 degrees!
I tooka friend of a friend for a spin and watchedthe car woefully try to accelerate, acute heatsink after 10 minutes and the lack of cold air was really noticeable on the performance and sound of the car, it really did breathe heavy, sounded rough.
Bill, you reckon your hurricanes aid cold air induction? (did you log any temps when u did your block 120's?)
ibizacupra
03-06-2002, 19:10
Originally posted by Saul
On that note we had a really hot day up here yesterday, my temp gauge was reading 28 degrees!
I tooka friend of a friend for a spin and watchedthe car woefully try to accelerate, acute heatsink after 10 minutes and the lack of cold air was really noticeable on the performance and sound of the car, it really did breathe heavy, sounded rough.
Bill, you reckon your hurricanes aid cold air induction? (did you log any temps when u did your block 120's?)
I think I did...however. The air temp sensor is in the inlet manifold, so heatsoak into the metalwork will dominate the air temp readings.
From memory of the dyno runs, the temps rose from 22'C to 40'C during the power runs, and seemed similar within a couple of degrees for both filters. The stock airbox does also breath non-engine bay air, albeit though a straw! (relatively :D)
The airtemp rise is boost determined (compress a gas and it gets hot) and intercooler determined. Mine is stock intercooled and the day was approx 17'C ambiant when I ran the tests.
The only real difference in the cold air feeds between the Hurricane and stock airbox is the size of inlet pipes and the Hurricane one points forward and down, whereas the stock one breaths from within the inner wing void 9not sure how it gets any cold air to be honest but it is'nt engine bay air at least)
regards
Bill