air filter advice

[scoobzie]

i have my99/00 2000 turbo and i am looking to get mega power from it any ideas as to what the best induction kit would be for the best bhp cheers scoobzie

[kenny4130]

Probably something like an APS or Hyperflow cold air induction kit.  I've got an APS on my 2000 UK Turbo, as I was advised to get one by Andy Forrest. I don't think he'd advise anyone to buy something that isn't rather good []  In the pic the APS kit is the black pipe which disappears into the offside inner wing.  It means you only get cold air rather than the hot air within the engine bay, hence the name 'cold air kit'.

[the blue dragon]

Did you have to get your car re-mapped mate, just out of interest, as i was also thinking about an induction kit for my 98 terzo?

 

 

 

cheers

 

iain 

[frank c]

What other mods are you planning along with the cold air kit ?

Yes, you'll need it mapped

[gus the bus]

I'd go with the Apexi power Intake system! but I would[] 

[cullenmin]

kenny have you had any trouble with the MAF sensor (with that air filter) or is it ok after a mapping session?

Rich

[colin_ross]

I'd go with the Apexi power Intake system! but I would[] 

Good advice Gus.

99/00's are well known for thier fragile maf's. They can fail for no apparent rreason but oiled filter's are a sure fire way of breaking one.  If you must fit an induction kit make sure it is a dry one, apexi has been tested as the best. I've got a used one lying about if you want to take a look at one.

I would advise you leave the standard airbox in place until either it starts to become a limiting factor (around the 400 bhp mark) or you want to fit a fmic and it doesn't fi any more.

[frank c]

So is the APS cold air kit not as good because of the slightly oiled filter ?

I bought one on the advice of Mr F to name but one.

[WUZ]

Load of **** !

APS is fine but needs rescaling of the MAF to prevent termnal failure of engine.

If an Oiled K&N filter was sooo bad, why do RCMS recommend them? or Lateral?

Avoid HKS and ITG - I agree - but not all Oiled filter are bad.

Russell

[frank c]

[]

[cullenmin]

How is a MAF rescaled? Who can do it?

Rich

[colin_ross]

Load of **** !

APS is fine but needs rescaling of the MAF to prevent termnal failure of engine.

If an Oiled K&N filter was sooo bad, why do RCMS recommend them? or Lateral?

Avoid HKS and ITG - I agree - but not all Oiled filter are bad.

Russell

Might be a load of rubbish in your opinion Rus but I for one would not be wanting to put an oiled filter on a 99/00. It's a well documented weakness and one that owners should bear in mind when making any modifications.

RCM and Mark may well sell oiled k&n's (I run one btw) but I do not know if they recommend them as such. I bought one knowing what I wanted and what spec it would be running with but I just asked for it, no recommendation there.

 I'm sure there are varying degrees of good/badness between them but why take the chance.

[scoobzie]

well guys i bought a k&n57i kit for mine tonight the exhaust is next any recomendations guys cheers scoobzie

[the squiggle]

well guys i bought a k&n57i kit for mine tonight the exhaust is next any recomendations guys cheers scoobzie

2 biggest killers of MAF sensors are Vibration, due to incorrect fitting or Contamination, due to the filters inabilty to filter small enough

I recommend you go down to Maplins Electronics and buy a Multimeter.  Then every so often, possibly every day, check the voltage on your MAF sensor.  Pretty much guarentee that the voltage at the MAF will die soon due to being contaminated with oil from the 57i kit.

 The oil used in a K+N filter is a very fine Duck Oil, they coat the filter with this oil to prevent water entering the engine.  When the car pulls max boost, the airflow going into the engine is strong enough to draw the excess oil out of the filter and with the MAF sensor being so close to the filter it gets coated in the oil causing the sensor to burn out or give a false reading.  The ECU in your car uses the MAF sensor when you go over certain perameters and if the signal from the MAF is reading low due to the oil from the filter then the resulting consequences will range from Check Engine Light to Limp Home mode and if it fails with your foot on the floor then a severe vibration through the pedal and loads of smoke out the back end.

Apexi Power intake filters are the best for the balance between airflow and filtration of particulates but the only make them for the standardish horsepower cars.  Once these filters become the limiting factor in potential horsepower then it is advisable to go for the larger Grp A style cone filter.

Best filter for airflow is the Blitz SUS filter, downside is the filter does not deal well with the filtration part of the job

Best filter for the job of filtration is the K+N cotton filters

Playsatan forgot to mention he runs a item called a MAFSIM, this item does away with the MAF sensor and instead uses a box of Voodoo magic to give the ECU the correct MAF values for the given load situation. 

[frank c]

I'd go with the Apexi power Intake system! but I would[] 

Good advice Gus.

99/00's are well known for thier fragile maf's. They can fail for no apparent rreason but oiled filter's are a sure fire way of breaking one.  If you must fit an induction kit make sure it is a dry one, apexi has been tested as the best. I've got a used one lying about if you want to take a look at one.

I would advise you leave the standard airbox in place until either it starts to become a limiting factor (around the 400 bhp mark) or you want to fit a fmic and it doesn't fi any more.

 

Well i've just fitted an APS cold air kit on the advice from Andy F..Is this bad advice then ?

[colin_ross]

2 biggest killers of MAF sensors are Vibration, due to incorrect fitting or Contamination, due to the filters inabilty to filter small enough

I recommend you go down to Maplins Electronics and buy a Multimeter.  Then every so often, possibly every day, check the voltage on your MAF sensor.  Pretty much guarentee that the voltage at the MAF will die soon due to being contaminated with oil from the 57i kit.

 The oil used in a K+N filter is a very fine Duck Oil, they coat the filter with this oil to prevent water entering the engine.  When the car pulls max boost, the airflow going into the engine is strong enough to draw the excess oil out of the filter and with the MAF sensor being so close to the filter it gets coated in the oil causing the sensor to burn out or give a false reading.  The ECU in your car uses the MAF sensor when you go over certain perameters and if the signal from the MAF is reading low due to the oil from the filter then the resulting consequences will range from Check Engine Light to Limp Home mode and if it fails with your foot on the floor then a severe vibration through the pedal and loads of smoke out the back end.

Apexi Power intake filters are the best for the balance between airflow and filtration of particulates but the only make them for the standardish horsepower cars.  Once these filters become the limiting factor in potential horsepower then it is advisable to go for the larger Grp A style cone filter.

Best filter for airflow is the Blitz SUS filter, downside is the filter does not deal well with the filtration part of the job

Best filter for the job of filtration is the K+N cotton filters

Playsatan forgot to mention he runs a item called a MAFSIM, this item does away with the MAF sensor and instead uses a box of Voodoo magic to give the ECU the correct MAF values for the given load situation. 

 

^^^^^^^^^^^^^^^ Couldn't have put it better myself.

Although I didn't exactly "forget" to mention my mafsim box of tricks. I just tried to explain what I did before I was set free from the land of mafs.

What I did forget to mention was the vibration aspect. Thats why I used the apexi's support bar but made up an additional bracket to make sure it sayed in place.

Be careful out there.

[john_mchutchison]

i was thinking of buying this for my 03wrx http://www.scoobyparts.com/acatalog/POWERT..._-_PT40-05.html ne1 got any opinions on this?

[colin_ross]

I'm not familiar with that particular one but as a general rule of thumb the steel mesh ones are maf friendly as they are not oiled, have great flow characteristics but poor filtration. I.e. the air gets let in easy enough, but so does all the dirt that the filter is meant to protect you from.

[kenny4130]

kenny have you had any trouble with the MAF sensor (with that air filter) or is it ok after a mapping session?

Rich

No problems so far and it hasn't been remapped (yet!)  The car has had a fair few other bits added at the same time - Hybrid FMIC, HKS plugs, new plug leads, full 3" decat system, 20G turbo, Walbro pump, FSE fuel regulator, Turbosmart supersonic dump valve and Apexi AVC-R.  It's being remapped by AF on Thursday so everything should run together properly - Also having 550cc injectors fitted then so I'm looking forward to seeing a big difference.  The APS kit I got was through ebay for £65.  It came with a K&N filter fitted.  According to Andy from AWD it looks like it was meant for a ver3/4, but it went on mine easy enough.