Is this right for me? K&N Induction Kit

[MudLifeCrisis]

As the only time the car has overheated in over 11 years of ownership was when the K&N was fitted with no air box I can only put it down to that. I've towed nearly 2.5 tonnes out of Bexhill with the original filter with no probs.

Another member did warn me it would happen when I first fitted it, the post is on here somewhere.

Anyway all ok now so not worth worrying about.


Brian

 

[lacroupade]

As the only time the car has overheated in over 11 years of ownership was when the K&N was fitted with no air box I can only put it down to that. I've towed nearly 2.5 tonnes out of Bexhill with the original filter with no probs.

Another member did warn me it would happen when I first fitted it, the post is on here somewhere.

Anyway all ok now so not worth worrying about.


Brian

I think it is worth worrying about Brian, especially if this other member warned about it....but somehow I suspect it was the same type of geezer who moans about lots of other things they haven't tried either! LOL.

I mean just look at the logic? lets say your engine WAS sucking in hot air from under the bonnet (lets forget ram air effect for a minute)...what does that equate to other than just hot air entering the intercooler/inlet manifold?

It won't raise the combustion temperature any will it, diesel burns at the temperature it burns at? And in reality its no more than these trucks are regularly submitted to countries like southern France, Spain, Cyprus etc.. where they regularly run in temperatures in the high 30s and beyond...

I remember when I first used one of these devices that the 'advice', especially from some of the old-school tossers that used to inhabit this forum, was many cases dire - engine flooding from rain coming under the bonnet, the old 'oil on the MAF' myth and all sorts of stuff....and not one of them had ever used one.:doh It was all "my mate had a mate who knew a bloke in the pub..." garbage.

Fact is that K&N, Piper etc. have been producing these things for many many years, initially mainly for motorsport and later for road cars an I've yet to see a demonstrable incident where the induction kit has underperformed the standard airbox.

So I don't doubt you had an overheating issue of some kind - the mere fact that you think it necessary to provide an extra air inlet tells me you are concerned - but I'd suggest it was purely coincidental.

Don't think I'm having a go cos I'm absolutely not - I just think its important that we discuss our experiences for other peoples benefit, and as a long-term user of the 57i I'd be extremely concerned if I thought there was a design flaw....I just can't see any logic for it based on this instance?

cheers
paul

 

[4x4_Gav]

Wow - seems I got a good debate going here lol

All good advice though lads, I will get some pictures up of before and after when it arrives and I fit it (or at least attempt to )

 

[lacroupade]

Wow - seems I got a good debate going here lol

All good advice though lads, I will get some pictures up of before and after when it arrives and I fit it (or at least attempt to )

thats what we do LMAO! :thumb2 Its all part of the fun here

 

[Timbo_1975]

I think we are missing the point abit here.

In the case of the T2, it is not the stock filter that is the limiting factor on breathing- it is the stock airbox, and specifically a combination of the oval spigot on the can, and the flat plastic duct into the wheel arch.

Putting a K&N /n-e-other oiled cotton filter into the stock airbox does not solve the problem.

Replacing the oval spigot with a 100mm one and suitable duct to a cold air location does, and the stock filter is just fine 98% of the time, unless the engine is modded to extremes and needs alot more air than standard.

Personnally, I do not like the oiled cotton filters with a hotwire MAF as they leave too much oil film on the maf reducing its measuring ability and service life in the long term.

We used to use standard paper elements in the WRC cars, no oiled K&N in sight as when combined with heavy dust would set solid. The drivers then couldnt clean them and had a car that wouldnt go at all.

 

[(RIP) PLANK]

I like to warm my pasty on top of the engine, will an oiled cotton element spoil the flavour? :augie

 

[lacroupade]

I think we are missing the point abit here.

In the case of the T2, it is not the stock filter that is the limiting factor on breathing- it is the stock airbox, and specifically a combination of the oval spigot on the can, and the flat plastic duct into the wheel arch.

Putting a K&N /n-e-other oiled cotton filter into the stock airbox does not solve the problem.

Replacing the oval spigot with a 100mm one and suitable duct to a cold air location does, and the stock filter is just fine 98% of the time, unless the engine is modded to extremes and needs alot more air than standard.

Personnally, I do not like the oiled cotton filters with a hotwire MAF as they leave too much oil film on the maf reducing its measuring ability and service life in the long term.

We used to use standard paper elements in the WRC cars, no oiled K&N in sight as when combined with heavy dust would set solid. The drivers then couldnt clean them and had a car that wouldnt go at all.

Totally agree with the first bit in red...:thumb2

Totally disagree with the second bit in red though....its an oft-quoted and. as far as I can find from extensive research and responses from K&N and Piper, completely unevidenced myth....unless you drown the bloody thing in oil, but its really hard to do that - its only a weedy little spray oil, red tinted to avoid overloading. I just don't buy it and nobody (apart from apocalyptic "a mate of a mate's mate in the pub..." stories) has ever produced a definitive claim on the manufacturers.

I've used these things for yonks on multiple trucks and very high mileages - never ever had a problem with a MAF. Couldn't even tell you how to remove or clean one cos I've never done it.

 

[lacroupade]

I like to warm my pasty on top of the engine, will an oiled cotton element spoil the flavour? :augie

I'm sending that recipe to Heston Blumenthal....:thumb2