white bros E-series


9 replies to this topic
  • jrcgaf364

Posted January 15, 2006 - 07:18 AM

#1

I did a search on this and read some good iinfo ....let me get this strait. if i run less discs w/out the spark arrestor plate it will be quieter? Right now im just running it open . and its loud as F*&k. i dont know as i particularly like that

  • BC61

Posted January 15, 2006 - 06:49 PM

#2

without the spark arrestor plate it doesn't matter how many disc you use, it's a straight pipe.

  • YZ400FPower

Posted January 15, 2006 - 07:01 PM

#3

i hate that pipe!.just old........go with fmf! they invented the powercore4 series because of the yz400f

  • jrcgaf364

Posted January 15, 2006 - 07:02 PM

#4

i didnt ask if you liked it did i i ask a question on th epipe not your opinion. i personaly like it.

  • YZ400FPower

Posted January 15, 2006 - 07:07 PM

#5

ok..............just sayin.........srry man

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  • dsconstructs

Posted January 16, 2006 - 06:53 AM

#6

I'm currently running the e series on my 426 that was on the bike when I bought it. I have the spark arrestor and 2 plates and it tested at 95 decibels. It had all 12 plates on there when I got it and was LOUD. It certainly changed/lost some performance by removing that many plates. I have a 450 auto decomp cam on it's way and after that I'll take another look at my pipe set up and may possibly change it. I just know it sure ran stronger when it was more opened up with the 12 plates on there.

  • yzkid999

Posted January 16, 2006 - 07:23 AM

#7

that pipe is loud as I don't know what.

  • BC61

Posted January 16, 2006 - 09:48 AM

#8

I have the spark arrestor and 2 plates and it tested at 95 decibels.


How did it run with only two plates?

I dropped down to 8 from 10 hoping to make it a little quieter and it made the bike hesitant in the lower rpm with a fast throttle twist.

  • jrcgaf364

Posted January 16, 2006 - 09:52 AM

#9

it runs beautiful with no plates......i just dont want to lose the performance. It runs great. if i put more plates on is it gonna need to be re-jetted

  • dsconstructs

Posted January 16, 2006 - 01:55 PM

#10

How did it run with only to plates?

I dropped down to 8 from 10 hoping to make it a little quieter and it made the bike hesitant in the lower rpm with a fast throttle twist.


Basically, it seemed to neuter some of the low rpms' power. Made the mid rpm hit feel like it came on stronger. I took care of some of it with fuel mixture screw. Otherwise it runs well enough that I won't finish trying to tune it any better until after I change exhaust cams and then likely just change out exhaust anyway. I want to keep it plenty quiet but two plates and the SA on this muffler just seems to be choking the bike.





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