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View Full Version : WB Silent Core Insert



02-07-2002, 09:41 PM
Has anyone with a 400EX installed the Silent Core insert into their WB E-Series pipe?

If so, did you notice much performance loss and/or did it effect your jetting if you had re-jetted your carb?

I just installed my pipe, I have an K&N airfilter and plan to drill (6) 1" holes in my airbox lid. With this combo I suspect i will be re-jetting at least to a 155-160 MJ.

To be legal a few of the places I plan to ride, I will need to install the Silent Core insert to get me hopefully down to the 96db limit.

I am curious if the insert would effect the performance to the point where I would be running to rich.

Thanks!!!

02-08-2002, 06:51 AM
I was wondering the exact same thing. Anyone got ideas?