Yoshi, or DMC?
#1
#3
#4
When GT Thunder did their shootout in the different pipes for the 400EX, they said that the yoshi system didn't flow well on a built engine, but they did say that the DMC pipe had no restrictions to the engine and flowed really well. Like I have said in the past if you build your engine at all get the DMC, I wish I would have known that before I bought my worthless Big Gun.
#5
The Big Gun just didn't do anything for the 400? I have a Pro Circuit slip on and last week i didn't notice and difference but i have to mess with my carb a little and go with a bigger main. Your not the first person i have heard complain about the Big Gun! And they tested a Big Gun a while back in Dirt Wheels and claimed a 7 hp increase, do you think they were pulling our legs?
#6
What I think happened is: On a stock 400EX they might have gotten 7 horsepower because dynos differ, but most likely they got 3-4 horses. I liked the pipe when my motor was stock, but now with mods I hate it, I can almost feel the restricted flow that it gives me. I can't wait until my DMC is here!
#7
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alljuice
Yamaha
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07-02-2002 01:14 PM
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