i couldn't remember because i dont' have the magazine for the 400ex pipe shootout i was thinking a white bros o series or something won but not 4 sure

 

They had a shootout in the ATVSport mag and curtis sparks won with white bros. coming in second.

 

If I remember right, they actually got the best performance from adding a K&N filter, jet kit, and removing the air box lid. They made it sound like an aftermarket pipe was a pure waste of money.

 

If you want another source of information, go to GT Thunder's website. They have several dyno charts for the 400EX, showing the hp and torque outputs after each change, so the comparisons are more meaningful. They don't recommend any particular mod or combination of mods, they just show you on paper, what each one does, and let YOU decide what's best for you.
They will also make you a custom pipe, tuned to your tastes, and your bike, but that's another story.

 

there was no test in dirtwheels that i know of for a 400ex pipe shootout. i have the ATVsport mag with the 14 pipes for your 400ex test. The supertrapp and white bros e-series come in the best. The big gun and dg i think are the worst. You loose power with the big gun and it is heavier then stock. But they really dont give results, its just which ever pipe is good enough for you. The prices vary which is what i would keep in mind

 

Here I'll just type in the entire list of both articles:

DirtWheels: March '01
These are just slip on silencers.
Brand Peak HP Cost
Honda (Stock) 26.9 $188
Big Gun 27.2 $300
Big Gun (quiet) 26.3 $340
CT Racing 27.9 $299
FMF Power Core 26.7 $270
Graydon 27.1 $295
Pro Circuit T-4 27.4 $250
Stroker SX1 26.9 $235
White Brothers E-ser 27.9 $260
White Brothers R4 27.1 $245
Yoshimura RS-3 27.6 $338


ATV Sport: June '01
These are full exhaust. No prices given.
Brand Peak HP
Honda (Stock) 25.9
DMC (Advan. Perf.) 27.3
Arrow 26.6
Big Gun 25.7
Curtis Sparks 27.8
DG 25.7
Duncan Racing 27.3
FMF Power Core 26.6
HMF 26.4
LRD 26.3
Powroll 26.4
Pro Circuit T-4 26.1
Ritter Cycle 26.6
SuperTrapp 26.3
TC Racing 25.9
Trinity Racing 26.8
White Brothers E-ser 27.6
Yoshimura RS-3 26.7

I hope that helped.[img]i/expressions/face-icon-small-cool.gif[/img]

 

[img]i/expressions/face-icon-small-shocked.gif[/img] WTF, that was supposed to be spaced out into columns. [img]i/expressions/face-icon-small-frown.gif[/img]
Does any one now how to do that?

 

YES there was a shootout in Dirtwheels, and YES the WB won. The power was close to the Pro Circut, but it was too loud. THe Curtis Sparks Exhaust is just a modded Supertrapp. Anyone can do that to a Supertrapp exhaust. You'll lose the spark arrestor and your hearing though....