Restrictors in air intake tubes?
 

Does anyone know the purpose of the restrictors in the air intake tubes, and the effect of removing them (apart from letting more air in)?
I saw one the other day and its a fairly major restriction, Im planning to remove them unless I hear its a bad idea?

Thanks,
Ben

doesnt noticeably improve power, but throttle response seems A LOT more crisp :D
And it sounds louder too :sing:

It sounds louder with a crisper throttle response... That'll do me..

I wondered if they were primarily some kind of silencer. Not much keeping them when the Termis go on then!

cheers,
Ben

I fitted DP carbon air tubes and a JHP under tank filter system and it definitly feels better than the original tubes.

Fidly to fit but well worth the effort!

i think shazaam was talking about the restrictors being designed to increase airpressure at slower speeds (like putting your finger over the end of a garden hose?) but who rides a 916/998 at slow speeds anyway!!!

I'll take them out this evening, and let you know how many seconds it shaves off the ride to work in the morning :D

The noise alone should be worth a few tenths

cheers,
Ben

They are fitted to cut down noise from the airbox.
It's all to do with sound waves and resonance.

...and just think of the weight saving. Worth at least another 3bhp.

As far as I was told they are just fitted for noise reduction, but the engine seems to respond better without them and the induction noise is great.

I have also fitted a JHP under tank air filter and removed rubber restrictors and front mesh on the nose cone and it does sound nice.
And i hope this does not sound stupid but if you start it up and put your ear to the front of the intake and rev it it sounds GREAT!!!!!!!!!