Aftermarket Air filter on stock ECU

[zxsixr03]

Are there any neg effects doing this? Does it help or make the bike a little more "free" mid to top end?
Cheers

[Wattie]

you'll be fine mate,

my zx10r had pipe and filter, on the dyno was still a bit rich.

[MadKaw]

Depends on the filter.

If you go with a K&N or BMC std filter I don't think it will make much difference as they don't flow much better than std, if at all.
I believe DNA flow a little better than std, but probly won't need a map

If you go with a BMC "race" then I'd say you could get some extra ponies with a PC3 and map (they recommned it with the "race" filter).

Question: For my motor bike, what’s the difference between NORMAL and RACE?

Answer: For some motors, the BMC catalogue (viewable on the Web site) can offer customers 2 air filters for a single motor bike model: one called STANDARD and the other RACE.STANDARD filter: All BMC motor bike filters replace the original air filter (usually paper); that is they fit the series filter shape exactly and are installed in the air box with no need for any modification; but their characteristic and substantial difference is that the “filtering package” is different to the stock one, better performing. This means it lets more air through; the simple, effective process is that by letting more air through combustion improves, so engine power does too.
RACE filter: The difference between standard and race lies in the “filtering package”, making the air passage to engine concept even more extreme: the RACE filter has an even greater air breathing capacity compared to the standard one and its installation is only, exclusively advised for motorbikes used on a race track as carburetion or injection could be weak (for carburetion the air quantity present in the mixture is greater than the quantity considered necessary, while for injection, despite the modern gearcase capacity to adapt itself within certain ranges, at times the excessive air increase is not handled correctly by the gearcase itself).To avoid problems of this kind and recover the right stoichiometric air/petrol relations, you need to increase petrol capacity. To do this, you normally use a gearcase, remapped or replacing the original. Otherwise for carburetion motor bikes you can have additional carburetion kits.
RACE filters have the words “RACE” on their recognition code (e.g. FM 482/08 RACE) and a yellow line inside the filtering package making them easily recognisable.


Pipercross also make a "race" filter that is recommended to be used in conjuction with custom mapping.

Race-Only Filters
As a result of this programme, Pipercross also offer a range of race/track-day only filters for a selected range of bikes commonly found in the Supersport and Superbike classes. These filters have a higher airflow capacity, but a far lower service/cleaning interval requirement of only 2,000 miles, making them unsuitable for normal road use. In addition, because Pipercross race filters alter the airflow by an increased margin, they should only be installed in conjunction with a correctly mapped fuel injection module, such as a Power Commander.