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04-22-2002, 10:14 AM
I just bought White Brothers E series with quiet core insert, K/N air filter with outwears.
I know that they suggest main jet 155.
I would like to know if someone as already bought the quiet core? I think that i would have to go lower in jet size?

As soon as the pipe will arrive i will take the number of DB. I will compare the sound of stock pipe, White Brother, and White Brother with quiet core insert.
Does anywone know how to take it, i think that its at an angle of 45 deg. 3 feet back. (is that right?)

ny300exrider
04-22-2002, 01:25 PM
cool, i was wanting to know how a wb with the quiet core sounded bcause i like the power of it but it is too loud. i might go down that route

04-22-2002, 03:53 PM
i was either thinkin that or the powercore Q for my 400. u should get that thing on a dyno and see the diff with the quiet core.

04-26-2002, 07:20 AM
I just receive my pipe today and i was wondering if there pipe are all like that...
On the inside they have a wave on the pipe like something hit the pipe

Thanks

By the way the quiet core are back order, so sound output will be delayed!

DESDAK4
04-26-2002, 07:41 AM
Yes they all look like that it is to clear the caliper if the rear is compressed.

Texan32
04-26-2002, 07:42 AM
From what i've read, thats how all of them come. Alot of people here have said something about a dent in their new pipe. I would guess that's it.

04-26-2002, 07:48 AM
THANKS !!!

JB's 400ex
04-26-2002, 09:25 AM
I bought my e-series about 6 months back and I was pissed when I saw that dent. There was a couple threads that said it was normal.

Jim300ex
04-26-2002, 01:25 PM
my e-series has the same dent it is for the shock on a certian quad (prevents rubbing)

Deathbringer
04-26-2002, 01:34 PM
Mine had it and I thought it was a defect...took it back to the dealer, they ordered me a new one...only to find the same dent on the new one...so I think its totally normal.

04-26-2002, 02:19 PM
I have a bills pipe with the race core and a quit core.
I have not gotten ahold of a db meter yet but I plan to test both to see what I can get away with at silve lake:devil
the web site I read said they test 20 inches from the pipe and at a 45 degree angle but I do not know if the tester is held at a 45 or it is held 45 dgrees from the pipe exit :confused:
they test at half the bikes maximum rpm
and the limit is 94 db at michigan state lands and parks


Cam
01 yellow 400ex
bills pipe and k&n kit

04-26-2002, 02:23 PM
Ok I hope everyone knows what I was talking about with the quit core

Cam
01 yellow 400 ex
bills pipe and k&n kit

EricB
04-26-2002, 03:42 PM
whats stock exhaust DB and whats WB e serries DB?

04-26-2002, 03:48 PM
Hey Hugo lorquet do you speak french i live in quebec too

Deathbringer
04-28-2002, 10:56 PM
Dont have a clue on either.. haven't DB'd them... but I do have a db meter so I will here in the next week and give you guys a report on both.

04-29-2002, 08:07 AM
Yes DMC400EX i speak french thats why my english is so poor!!!
Where are you from?
I live near ST-Jean Sur Richelieu.

By the way i just bought a dremel to buff the weld inside the pipe.
Just call White brother and ask them for the quiet core that are b/o. They told me that they will have some by the 8 of may.
So in about 3 week you should have the sound output.