I know someone out there has, so if that someone is YOU can you let everyone know if it made a drastic differance like the manufactures are saying it does!

 

I'm hoping it does. It seems that the engine is really restricted. Opening 'her' up should provide some good response, in my eyes at least.

 

I HAVE THE WHITE BROTHERS E SERIES. I HAD TO REJET TO A 150 ON THE LEFT AND A 155 ON THE RIGHT CARB. A STOCK AIRBOX WITH THE RESTRICTIONS CUT OUT. I AM IMPRESSED WITH HOW THE POWER IS MORE USEABLE. THE BEST IMPROVEMENT IVE DONE SO FAR IS A 43 TOOTH REAR SPROKET.I THOUGHT IT WOULD SACRIFICE TOP END BUT I WAS VERY WRONG.THE ENGINE WILL NOW PULL TO THE REV LIMITER IN HIGH GEAR. MY FRIEND HAS A DS650 AND WE WERE CLOSE ON A TOP END DRAG RACE BUT I CAN PUT IT TO HIM PRETTY BAD NOW.

 

I have the White Brothers and love it and I havent rejeted it either plug looks perfect so I havent even bothered it. I gained alot all along the powerband. Highly recommend it.


Boogieman

 

What about the Big Gun exaust? what made yall go with the e-series? the reason i ask i can't seem to decide between the two.

 

I have the same pipe..let me ask a stupid question. How do you determine which is left or right? Is it by the way you sit on the bike?..also where di d you get your jets from?

 

Wait and check out the Sparks.. They always have top Notch kits for fourstrokes.

 

I have put on the Big Gun Exhaust. I love it, way louder than before. Seems to have more power all around. Had to rejet it to 150 and 155. Was anyone able to get the the carb bowls easy, I took apart everything to get the carbs off. I just ordered the Big Gun header pipe, can't wait till the K&N comes out. I don't know how it compares to the White Bros. I also highly recommend regearing, I went with a 44 rear sprocket, much better.

 

Is it really necessary to re-jet the carbs if you change the exhaust system? What happens if you dont?

 

I went with White Brothers because of their rep in the four stroke engine perf. I have had many fellow riders tell me that the White Bros gave their fourstroke more all around power and thats why I choose em. And no you dont have to rejet with the White Bros.

Boogieman