never been a fan of piper cross tbh mate, I've always found K&N to be better. although the gains in power etc are debatable the induction kits do some lovely and the panel filter replacements are actually a lot better than the standard paper elements.

 

You won't gain anything power wise.
You will however enjoy the noise

 

In general no they are a waste of time performance wise, they often make performance worse. they will make a noise though so depends what your after

the key is getting as much cold air as possible, removing an air box for an open end cone filter just increases hot air intake unless there is a heat shield from the engine

A good mod is too create another cold air feed to the air box and de restrict if applicable

I will say, this doesn't always apply, but 9/10 this is the case. Be the performance gain/loss in either direction is minimal. So if you want the noise go for it, you won't loose noticeable performance but it sounds nice

have a look at this, different car obviously but gives a comprehensive write up with dynos of different induction set ups on the same car

http://www.clubgti.com/showthread.p...37-Toyotec-s-how-to-make-your-MK3-16v-breathe-on-a-budget-Part-2-added-14-12-09

Concludes that out of all possible set up, some of which are very expensive, the best is the standard air box, drilled on the opposite side to the engine and the internal valve removed

Cost £0, and sounds awesome, I know cus I've done it

 

if you can buy a K&N typhoon kit they are not cheap but they have a heat shield and are the best out their!

 

I see hundreds and have many happy customers

Just as good as K&n apart from much more reasonably priced since k&n seem to have had a price hike of recent years

 

What's the point in derestricting an airbox when you have a standard paper filter?

Seriously lol

 

You could uprate the filter, but on that post they use an OE filter in a modified air box and it has the best dyno of the lot, better than the modified airbox running k&n

Op are you on about changing to a piper cross induction? As that's what I presumed

 

well, I have one and they certainly don't make performance worse, pulls better up hills and I get around 400 miles to the tank on the 6, not bad at all for a 2.0l petrol engine.
doddle to clean as well.
mine is the panel filter, straight swap for the OEM one

see this link http://www.detailingworld.co.uk/forum/showpost.php?p=1809267&postcount=20

 

well, I have one and they certainly don't make performance worse

mine is the panel filter

Yeah was on about the cone induction thing when I said that

 

I had a pipercross on my Octy vRS for a few years and it was fine (reason I got it was that VW Racing used rebadged pipercross filters in their cars at the time). The thing with filters is that the BHP gains are minimal and unlikely to be noticeable by themselves (a few horses probably, although with other mods like re-maps etc things start to accumulate), but they can in some cases slightly increase induction sound (which is always nice).

I know I will get the K&N devotees on my back for this, but I got the non-oiled piper at the time (and I have a non-oiled cosworth filter now in my GT86) and avoided K&N because if you overdo the the oil replacement when cleaning it there are stories about how it can seriously screw your MAF if it gets gunged, and that's potentially a very expensive fix. Yes, I know people will say K&N (and other oiled filters) have sold so many that they must be safe, but I just take the view that a non-oiled filter (which of course the OEM paper ones are) is the safest option when there is plenty of non-oiled panel filter choices out there.

Of course the other issue you need to consider is if you are not going to use oiled filters, and you want something with more airflow than OEM paper ones, you need to be careful that they are not too lax in the filtration department - which is actually why I went cosworth this time as the material they use seems to be a lot better than the pipercross foam layers.

 

i just removed the one from mine, bit too late now after my maf has been destroyed! , probable cause is the ill fitting pipercrss filter letting crud pass, there was a leaf or two stuck in the maff housing and sand on top of the filter where it wouldn't seat properly in the housing.

see here http://www.detailingworld.co.uk/forum/showthread.php?t=356949

 

User error. They fit perfect.

 

I have now put a k&n filter in, it fitted nice and snug with no problems so hopefully all good, throttle response is certainly sharper than it was, and sounds nicer too.:thumb:

 

Used to use them in Audis. Nothing wrong with them they're good.

Use Green cotton now.

 

Is this for a cone or panel filter?
On a V6 you will get terrible heat soak with a cone, sit in traffic in summer for a good few mins & the car will run lumpy and sluggish. (Unless you fab up a heat shield)
I had one on a Vectra GSi and it was too loud once the induction roar novelty had worn off too.

A panel filter with give a teeny tiny bit of extra throatyness but will run loads better.

So here's the trick (& will probably get plenty of grief for suggesting it)
Put a panel filter in and then hole saw a few times the underside of the airbox for a bit of roar without going too far.

I did this to my 330ci and it sounded immense and ran perfect with zero issues for 40k miles.

I also have a piper-x filter in my current car, but with it being a diesel I didn't want it any louder lol! But is fine & wouldn't hesitate to put one in my next car either bud.

 

It's a k&n panel filter I have fitted:thumb:

 

Makes me laugh how because somebody can't complete the simple task of fitting an air filter properly, they then rubbish a whole company with zero experience of using said product.

Good old Internet:roll eyes:

 

Agreed:wave:

 

When i had my Evo 8 9 years ago we did a dyno test with just a panel filter, 4bhp increase was noted without doing anything else, after that things got serious mod wise,but was the best 4 years spent driving a car!:car:
no harm in fitting one IMO though id recommend cleaning them every 3 months whatever manufactuer you choose K&N pipercrosss etc

 

I have a pipercross replacement in my TXS. noticed absolutely nothing. Well mpg gone up slightly. I only got it because it was a tenner and I don't have to buy a new filter each time so two filters will pay for itself. Best filters are the manufacturer. 99.99% efficient in tests. There was a test a while ago in a fast Ford magazine. they let in next to no dirt. When you go performance you have bigger holes for air to flow through therefore letting in bigger particles. I have a tdci and noise has improved slightly but I didn't fancy listening to a tractor so a replacement rather than an open filter was fit for needs.

Ryan

 

Just fitted a pipercross panel in the 330, seems a bit better throttle response and a bit louder on the induction and a just over £30 a bargain a gen bm filter has got to be about £15 or so i'd guess and will need replacing annually!

 

I've had PiperX and K&N in my last four cars (two of each). No difference between the two brands but always an improvement in throttle response (although slight) over standard paper filters.

I'd just go for whatever's cheaper.