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post #1 of (permalink) Old 04-04-2000, 06:29 PM
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400ex exhaust

Just wanted to see what types of exhaust systems 400ex riders were using. I read about the big gun which sounds promising, also, anything under the 100 decibel mark is better for me since i ride on the East Coast.

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post #2 of (permalink) Old 04-04-2000, 07:40 PM
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Re: 400ex exhaust

the white brothers promeg is the best increase for the 400 ypou can getwith up to 7 hp. i've raced mined aginisted other 400's who had big gun and blew them away by 3or4 lenths

post #3 of (permalink) Old 04-04-2000, 10:37 PM
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Re: 400ex exhaust

does anyone know where i can get a wav file to see what the white bros exhaust sounds like?

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post #4 of (permalink) Old 04-05-2000, 12:35 AM
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Re: 400ex exhaust

Do you think that the White Brothers pipe is that much louder than stock, although as loud as a four stroke gets a loud two stroke always seems to get under people's skin more.

post #5 of (permalink) Old 04-05-2000, 08:22 PM
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Re: 400ex exhaust

I'll be running a complete Bill's Pipes system pretty soon. I'll keep everyone posted about the results.

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post #6 of (permalink) Old 04-08-2000, 08:15 PM
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Re: 400ex exhaust

I'm getting the new FMF Powercore4 squared silencer and Hi-Flo ceramic coated header soon. Should have the silencer this coming week. A friend has last years model Powercore 4 and it is loud! At least 98db . The new version is supposed to be more quiet and produce the same power gains, which are substantial with a 152 main jet and 40 pilot jet.

post #7 of (permalink) Old 04-18-2000, 08:47 PM
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Re: 400ex exhaust

Impressive!! Just got that FMF Powercore4 squared and love it. Its a different bike all together. I raised the needle a notch also with the 152 main and 40 pilot jet changes. Also have a K$N filter. Stay tuned for more when I finally get my header, its supposed to ship on the 19th.

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