bhalstad Posted February 15, 2005 Report Share Posted February 15, 2005 anyone have any experience with these. Told my vw specialist garage that I had one I would like to have fitted. He told me they really dont work well and will cause problems. True? 1.8T Link to comment Share on other sites More sharing options...
cruiser647 Posted February 15, 2005 Report Share Posted February 15, 2005 Apparently, the standard K & N is OK, but once washed and re-oiled, then it can causes probs. Enthusiastic oiling can cause the oil to 'spray' off onto the MAF and cause duff readings. Or burn it out. A solution, is to use a cone filter rather than a panel jobbie. (eBay has loads and you do not HAVE to get your specific model one). You will have to make up your own pipes and use a bit of gaffer tape, but it should fit in the airbox. Make sure you keep the MAF in-line and do not damage it. I used stuff from B&Q pipe section, gaffer tape and a small tin can to connect my cone filter to the air pipe in the air box. You need to have a cold air feed too - hence the filter is still in the airbox! Hope that helps! Link to comment Share on other sites More sharing options...
shao_khan Posted February 17, 2005 Report Share Posted February 17, 2005 YOu often find that in many driving conditions with a 1.8T a straightforward K&N induction kit does not offer you any benefits. Testing a similar kit on my TT had 275bhp before and about 250bhp after!!!!!! basically you get a lot of heat build up in certain conditions meaning the engine draws in a lot of hot air and I forget the exact equation but it roughly works out that a +1deg rise in intake temp can lead to a -1bhp power figure (that may not be accurate but it is something along those lines). So in standing traffic and around town an induction kit might offer you no benefit. Now if you were to shield the cone with some heat shielding and run a cold air feed from under the car to the enclosure you could overcome this problem. Link to comment Share on other sites More sharing options...
felixthecat1 Posted February 18, 2005 Report Share Posted February 18, 2005 I'm sure I stuck a post in here. Am I going mad mods? Link to comment Share on other sites More sharing options...
shao_khan Posted February 18, 2005 Report Share Posted February 18, 2005 I dont think you are going mad, but I am sure I had posted once, so I wonder if a coupl eof posts were lost when the update happened the other night. Link to comment Share on other sites More sharing options...
felixthecat1 Posted February 18, 2005 Report Share Posted February 18, 2005 Ahhh, still not sure though. I have just bought a Volvo you know. Link to comment Share on other sites More sharing options...
R32North Posted February 18, 2005 Report Share Posted February 18, 2005 I ran a panel K&N on my 1.8T for 3 years without a wiff of a problem. Have now been running one on my R32 for 16 months without issue. I have been using them for years and not once have they cause me any problems. I'd avoid the exposed cone filters as they will suck in hot air from the engine bay and reduce power. The panel filters are loacted in the stock air box, which is made of a heat resistant material, which ensures that the air entering the airbox from outside is not 'warmed' by heat from the engine within the engine bay. Don not over clean or over oil. Best to clean every 25,000 miles or if it gets super dirty, ie you live in a fly / bug ridden part of the world. But that just my opinion, you may wish to seek others advice to either back this up or refute it Link to comment Share on other sites More sharing options...
felixthecat1 Posted February 18, 2005 Report Share Posted February 18, 2005 [ QUOTE ] But that just my opinion, you may wish to seek others advice to either back this up or refute it [/ QUOTE ] NO it's not an opinion, it's a fact based on factual events. I too always fit a K&N and have never had any problems. Anyone that moans about them is just talking . I can back you up, Panel K&Ns allow your engine to breath more easily and that's got to be good. Link to comment Share on other sites More sharing options...
cruiser647 Posted February 19, 2005 Report Share Posted February 19, 2005 [ QUOTE ] NO it's not an opinion, it's a fact based on factual events. I too always fit a K&N and have never had any problems. Anyone that moans about them is just talking . I can back you up, Panel K&Ns allow your engine to breath more easily and that's got to be good. [/ QUOTE ] Ditto! But now I have a TD, I have fitted a cone filter in the airbox. Just need to give it some more holes now for more air and let the engine 'Breathe'........ Link to comment Share on other sites More sharing options...
R32North Posted February 19, 2005 Report Share Posted February 19, 2005 cruiser647 - have you seen those 'hole' filters you get for motorbikes. Basically, you drill holes in the air box, but then you plug these with mini filters, allowing more air in but no crap - brillinat and would work on car air boxes as well Link to comment Share on other sites More sharing options...
R32North Posted February 19, 2005 Report Share Posted February 19, 2005 .... http://www.whitebros.com/04catalog/Intake.pdf scroll down to page 2 !! Link to comment Share on other sites More sharing options...
cruiser647 Posted February 20, 2005 Report Share Posted February 20, 2005 Hmmm. Thanks for that! Will look into tham a bit more! Link to comment Share on other sites More sharing options...
Rustynuts Posted February 20, 2005 Report Share Posted February 20, 2005 Just a thought. Given that the same standard air filter flows adequately for a 3.2 ltr V6 in an R32, why the need to start increasing airflow by changing the filter for a TDI or a 1.8T? You aren't going to make it breathe any better as it's flow capabilities are much more then the engine requires. If you were going down the route of modding the engine then you might need to open things up a bit when you really start to flow some air through it, but standard and mild modding, no need. Link to comment Share on other sites More sharing options...
R32North Posted February 22, 2005 Report Share Posted February 22, 2005 In new form the standard paper filter and K&N type filter aren't going to be that much different, except you'll get a better, smoother flow from the K&N, but only marginally. After only a few thou miles tho the paper one will degenerate in terms of flow and performance will suffer. K&N will take a lot longer to show signs of reduced performance. You buy an K&N once, and at around £45 it will last a good 50,000 plus miles (they say 100,000) where as you really want to be changing a paper one every 8,000 or so and thats 5/6 papers ones, at approx £22-£25 per paper filter you're near £100 on paper filters compared to a one off purchase on the K&N ! Link to comment Share on other sites More sharing options...
Rustynuts Posted February 23, 2005 Report Share Posted February 23, 2005 There's a guy I know who runs a 90 bhp TDI with the standard air filter and has fitted a CAT restriction gauge. This gives a visible reading of an decrease in airflow due to the blocking of the air filter. He runs 60k miles before he needs to change his. This might be a bit extreme, but is an indicator nonetheless. My car (130 tdi) runs up to 30k on longlife oil and the air filter gets changed then. Petrol engines may differ. Link to comment Share on other sites More sharing options...
spyke Posted March 1, 2005 Report Share Posted March 1, 2005 Can anyone tell me the K.N. part number for a 1.8T, as I'm having trouble finding the right one? I've phoned K.N. but according to my local dealer it was the wrong P/N. And for some reason this particular Passat model is not in their book. Link to comment Share on other sites More sharing options...
felixthecat1 Posted March 1, 2005 Report Share Posted March 1, 2005 Hiya, give www.Eurocarparts.com a bell. I got mine from there. Don't bother looking at the website because it won't come up. I had to go down there. They may deny selling it but they deffo do. Sorry not to be more help. I got mine from the Wembley store. Good luck Link to comment Share on other sites More sharing options...
spyke Posted March 5, 2005 Report Share Posted March 5, 2005 Thanks for the info,but I'm still confused. I still end up with 2 different part nos 33-2125 & 33-2675. I think I'll have to take my air filter out and measure it, weather permitting. Link to comment Share on other sites More sharing options...
R32North Posted March 9, 2005 Report Share Posted March 9, 2005 [ QUOTE ] Thanks for the info,but I'm still confused. I still end up with 2 different part nos 33-2125 & 33-2675. I think I'll have to take my air filter out and measure it, weather permitting. [/ QUOTE ] What year or car? Most common is the 33-2125, but you may have a Passat that is slightly different? Link to comment Share on other sites More sharing options...
R32North Posted March 9, 2005 Report Share Posted March 9, 2005 Some digging about on K&N.com, shows that 33-2675 is mostly for BMWs; 740i, 840i, VX Senator and VW Santana 1.6, 1.8 (inc T) and 1.9 TDi. I'd check it out, but it seems like the 33-2125 is more likely to be the one! Link to comment Share on other sites More sharing options...
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