Approx. HP of my ex

[Florida400EX]

Approx. how much hp does the 400ex have thats listen in my sig....

JE 416 10:8:1, WB Track Cam, Pro Circuit Full system Exhaust, Twin Air filter, no lid, and perfectly jetted.

thanks for the help

[04'400ex'er]

I would say low to mid 30's. prob. 33-34.

[Florida400EX]

That makes me happy :D

(I need a yfz :blah: )

[quader400]

well while were on it could you tell me about how much mine would have with a stock bore, k and n air filter, stock carb bored to 38mm, full system lrd, and perfectly jetted. thanks

[Florida400EX]

Originally posted by quader400
well while were on it could you tell me about how much mine would have with a stock bore, k and n air filter, stock carb bored to 38mm, full system lrd, and perfectly jetted. thanks

What compression? Is it stock compression?

[quader400]

yea stock compression.

[Florida400EX]

You'd be lucky to be touching 30.

[PismoGuy400]

i hate it how we have just about one of the only so called hi-performance bikes that BARELY responds to an exhaust upgrade while all the other bikes are seeing like 20-30% increase

[HondaRider250]

i would say your 400ex should make about 34 or 35 hp... since it comes stock with 26

[Florida400EX]

Originally posted by PismoGuy400
i hate it how we have just about one of the only so called hi-performance bikes that BARELY responds to an exhaust upgrade while all the other bikes are seeing like 20-30% increase

heh, I second that..... I just wish these 400ex's were liquid cooled,so we could make some real power with them.

[Chanman420q]

Originally posted by PismoGuy400
i hate it how we have just about one of the only so called hi-performance bikes that BARELY responds to an exhaust upgrade while all the other bikes are seeing like 20-30% increase

this is because the stock 400ex exhaust isnt nearly as restrictive as other quads like the raptor or Z400 who see great gains from aftermarket pipes