South West Bikers | Motorcycle Forum

Tom L · Post by **Tom L** » Dec 4th, '05, 18:15

was having a poke on ebay to find some goodies for my bike, spotted a K&N new filter for my bike, still packaged and everything. It's going for £45 with p&p. Reckon it's worth it? i have no idea what or even the condition of my current filter so assume it's pretty shagged.

markandmindy · Post by **markandmindy** » Dec 4th, '05, 19:21

is it air or oil filter? either way, seeing as you got a bandit, try this place; http://www.justbandits.com/ as it says, just bandits so at least you know you'll be getting the right gear. £45 p+p seems a bit steep though

Tom L · Post by **Tom L** » Dec 4th, '05, 19:37

it's an air filter, though i was just speaking to a friend and he said he's heard of people with K&n's actually having peformance drops beacuse they arn't tuned in with the carbs, so you've got to get your bike dynoed to make em work, is this true?

damn you for giving me that link, it's like my dream christmas list,you do realise because of that i'm not going to have any money ever. mmmm carbon fibre belly pans and twin high profile exhausts .

Funky · Post by **Funky** » Dec 4th, '05, 22:33

You should really get your bike dyno'd whenever you change the breathing on your bike.

ZXR400Lee · Post by **ZXR400Lee** » Dec 4th, '05, 23:37

I have brought K&N Filter,and Dynojet kit but I havent fitted it yet because I need to find someone to tune it for me. K&N filters are good, but to get most potential buy a decent race can, or full system and a dynojet stage 1 kit, and then you'll notice some difference, otherwise, the stock air filter is perfectly fine.

Tom L · Post by **Tom L** » Dec 5th, '05, 12:37

already got the can, thought a filter would be a nice little extra, but it dosn't sound like it makes all to much difference. Maybe a belly pan or somthing would be a better investment

andrew · Post by **andrew** » Dec 5th, '05, 15:48

ZXR400Lee wrote:I have brought K&N Filter,and Dynojet kit but I havent fitted it yet because I need to find someone to tune it for me. K&N filters are good, but to get most potential buy a decent race can, or full system and a dynojet stage 1 kit, and then you'll notice some difference, otherwise, the stock air filter is perfectly fine.

I would always recommend fitting a K&N filter as a mod by itself it won't really give u any power gain but it does have the advantage of being re-useable as it can be cleaned (most OE filters can't).

If you do an end can as well as a filter then you could see a few bhp gain as the filter will flow more air and the end can won't be as restrictive as the original (obviously a race can will be less restrictive than a road legal can but both types of aftermarket can are likely to be better than the original system. Also aftermarket end cans will be lighter than the original (remember making your bike lighter is as good as adding power).

A full race pipe system with a K&N will give even better gains than just an end can (one website quotes a 12bhp

gain for my bike just by adding a full exhaust system and K&N altho this maybe a bit optimistic). Also a full system gives even greater weight savings - altho with my bike its has meant blocking access to the oil filter which is a pain come servicing time!

All this is ok but can result in a bike running lean (as now u have a lot more air flowing) this isn't necesarily the case tho as many bikes are set up to run rich from the start - sprockets sv didn't require any re-jetting with a K&N and end can and he still got some gains, my bike require a bit of carb adjustment but still no re-jetting with a full system and K&N.

Having said that a dynojet kit and proper set up on a dyno would give you the assurance that your bike is set up perfectly (as long as it doesn't blow up during the dyno run - THIS DOES HAPPEN).

At the end of the day I haven't bothered doing the dynojet kit to my bike as it rides really nicely anyway - but its upto you the best thing u could do though is read up on bandits on the net and see what others say if they reckon u need a dynojet kit on a bandit then i'd listen to them

p.s. sorry for the long post, i'm even starying to bore myself

markandmindy · Post by **markandmindy** » Dec 5th, '05, 18:24

Then you could forget all the above, ditch the 400 and get yerself a 12, go on, you know you want to..... listen to the voices in your head.....

Webber · Post by **Webber** » Dec 5th, '05, 18:57

totally agree with andrew and zxr lee, its definatley not worth doing unless your gonna do the three, can/stage 1 etc.

ZXR400Lee · Post by **ZXR400Lee** » Dec 5th, '05, 19:36

Or save your money, put it somewhere safe, an it'll go towards something bigger when, like me, 33bhp restriction runs out..