ITG airfilters
 

Has anyone got any comments - good or bad - on ITG airfilters with a DP chip and 45/50mm half system on a 996? Or what's the best/most robust airfilter for this setup?

Cheers!

There is a thread on this and on which shazaam gave views.

I ran the JHP filter (same as ITG) on my 996 with a 45/50 system and it wroked well. I did take the mesh off the front of the air ducts on the basis that after any long ride it was full of bugs and must have had some limiting effect on airflow. Oddly, whenever I looked in the airbox thee was no muck/stones/flies/small birds etc., so maybe the mesh attracted dirt...:sing:

I'lllet you know next month!!!

I've been running an ITG with 45's and a chip and had no problems, I've just put 50's on the bike but it won't be fired up and run for a short while.

Hope that has helped.

dave

Never had any problems in the last seven years.

Any filter that takes up Volume in the airbox is pants. I can see why some prefer the filtration of undertank types but you can't beat in tube filters for throttle response and power.

Tried the pipercross type that goes between the inlets into the airbox but now use in tube pipercross. The dyno and the Mk1 backside dyno told me that the latter was better for my bike, a 998.

Ray

I agree with Ray. I ran an undertank filter for quite a while. Although the bike felt fine, the filter was fitted when I bought the bike, before I started selling the MPX038's that fit in the tubes I tried them first and noticed a marked improvement in throttle response and maybe a little more kick up the top end. The induction noise is certainly louder :devil:
They are far thicker than the stock filters, and a little bigger so seal correctly in the tubes and seem quite happy to run without the mesh over the front of the tubes to.
To some degree I still suggest the undertank filters on the earlier bikes with the thin tank/airbox seal as this lets dirt in. I've replaced mine with the later one which is a lot thicker though and now enjoy a dust free airbox :)
The '38's are washable and seem to last pretty well and at £25 a set, cost little more than the stock tube filters but a lot less than the undertank items.

Wel to throw another spanner in the works. Im having the K&N JHP filter fitted in my 996R. John Hackets fitting it and what he dosnt know about these bikes is not worth talking about.

He really does rate the type I am having fitted. Discuss.

K&N JHP Filter? I know John's helped develop a pipercross filter, didn't know he had anything to do with K&N

Is it necessary to keep the rubber bungs in the airtubes on a 996.
I know they are removed when fitting an under tank filter but what about when using other filters?

Which particular aspect, filtration/airflow, Top end power, mid range, throttle response, ease of fitting, ease of removal, induction noise, price/value for money, how often you fall off and end up with gravel in the airbox!!

all points for discussion when choosing a filter.

All I'm saying is what worked on my bike for me, when the filter(S) was the only change.

On the orginal question best/most robust combination, it's a compromise, "best" filtration doesn't always equal "best" performance. You have to decide what you want regarding the aspects described above, then you compromise.

Mr Shazaam posted his piece on this sort of topic and while ago.

Ray.

dave996,

The bungs can go as thei only there to reduce induction noise as far as I know.

It might cause air fuel/ratio issues that might be worth checking out.

Ditching the intake mesh is worth doing as well but again that has it down as well as up sides.

Ray

Cheers for the advice Ray:)

I did a couple of back to back dyno runs with and without an undertank over bell mouth filters. Bike gained 10 hp without filter (and it was clean:lol::lol:) at top end, gains started from 4000 rpm, no loss anywhere. Now use ITG

So what is the down side of ditching the mesh, I am running a JHP velocity stack filter at the mo.

Some people just like spending money for the sake of it, the pipercross filters that replace the stock filters are less than £20 and don't seem to have any disadvantages, I read shazaam's post on the subject.

If I was selling and fitting parts I might suggest the more expensive option too.:ninja:

The mesh acts as primary filter stoping big bits getting to whatever air filter you have fitted.
When modifying the mesh you might find the air fuel ratio needs some adjustment, but that depends variables such as what type of air filter you are using.

Generally speaking if you get more air into the engine you need more fuel to go with it to get a benefit. All depends where you are when you start, e.g. OK, lean or rich, even then some spooky stuff can happen, i.e. the opposite of what you might expect. e.g. on my bike I expected it to be rich because of an air restriction in the way of the front cylinder bellmouth but when tested it was lean.

Maybe because these bikes don't have any sorted of MAF sensor or lambda sensor controlled trim? Would be interested to know what determines the amount of fuel the injectors are "told" to throw in? TPS, water temp (below a cetain threashold?), engine RPM?? Not very sophisticated compared to a modern 4 wheeler??

The air/fuel ratio can vary between the front and rear cylinder, the air filter set up can influence this as well.

With the changes made to my bike the next move would be a power commander, or an FIM ECU to set the fueling as near to the ideal for each cylinder as possible.


Ray.

Thanks to all who replied. After much deliberation i'm going for a pipercross as it's cheapest, seems to be about the "best" for my modest requirements and by all accounts should sound lovely-jubbly too!

Cheers,

Russell.

alright dudes?! :cool: i've been looking at shazaams post, he recommends mpxo38's but on the web site pipercross only mention mpx068's? ahhhhh:puzzled: I hate decisions!!

Definately MPX038's for the air tube fitting. I'm out of them but try BikeTorqueRacing. They should have 'em.

I've been running MPX038s for nearly two years now on the 748. I got mine from Demon Tweeks, and they were £19 for the pair!

They fit lovely into my carbon air tubes which have the runners for the oem filters, but I found it better if you (carefully) take the plastic cage off the oem filters and use these on the pipercross ones to help maintain their shape.

Mesh
 

How about a "bigger" mesh like this:

http://www.italo-shop.com/shop/vollb...zmXA BKAI6a3m

For Eur.20,- at the Italo shop.

Regards, DUCMANs

... or a fiver for an A4 sized sheet from B&Q! :lol:

I just bought a BMC induction kit 324/19 for the 916/748/996/998 and it works great. All you have to do is fit 2 frames on the inside of the air box and slide the 2 filters in and that's all.

I had before an under tank one and i can tell, you can really feel the difference. It revvs freely throught the whole range.

The only negative comments is the price ~200 EUR