I cut mine out and gained 50 hp!

 

Crap!...I only got 47hp out of my screen removal.

 

No big deal... they were just itty bitty ones

 

I was about to do it, but it seemed like the risk of dropping screws down the intake manifold was very high.

I guess they would hang up against the carb slide and could be fished out with a magnet.

When I talked to DynoJet recently they did not even recommend taking the airbox cover off. Made no difference on their dyno tests. Snorkle, yes. Cover, no. Some air resistance is needed for the intake system to function.

Go figure. Lot of variables in the equation.

 

Removing the entire airbox is not that difficult. Makes removing the screen much easier.

 

Yep, KawaBiker, that is the knowledge they have and the data they have to go off of - and for a very good reason - call em back and ask what exhaust system they used on the "mule" they created the kit with.. I can tell you - It was dead stock! Now I'm not gonna knock DJ at all - I have nuthin-but-love for em.. The fact is that using their kits on bikes that are modded beyond the test mule they used to create their kit/data means dabbling in uncharted waters - and you do this by simply bolting on a good aftermarket silencer.

It is true that the MAJ and the PAJ (pilot air jet) are sized by Kawa for proper operation with the lid and snorkel - and they are not replaceable. So removing the lid means a large increase in airflow with an attending loss of velocity as well as altered vacuum gradients throughout the carbs' circuitry. This simply means the carb must be setup properly for being lidless. I've done this. The results are mid and top end power that I'm sure cannot be had with a lid.

If there is ever a dyno test with standard stage ll that has curves superior to mine, I'll be the first to put my lid back on.. The DJ specialist did admit, last week, that I'd probably loose top end HP and TRQ if I put my lid back on..

 

Ok, removed the screen.. I don't know guys, my 2012 had a single, open mesh, screen that was really free flowing.. Oh well, hopefully picked up HP or partial HP on top.. It's starting to warm up here in N Tx - in the 90's.. Probably should put back in the DJ140 main jet due to the higher altitude density..

 

Man, have we been spoiled by the mild spring temps up to this point in Texas, or what? And rain...what's up with that?

 

NeoTx specialties: Frog-Kabobs n Chicken Fried Turtle n Gravy?

 

Read through this study on mesh screen aerodynamics and see. http://www.inia.es/gcontrec/pub/273-...5240539140.pdf

There must be some increase in pressure and density at the carb inlet with the screen removed logic dictates, but is it enough to warrant the effort? Could there be negative consequences? Are they in the bike's design due to forrest service regs as in exhaust systems? Or just due to lawyers?