Pipe Decision

[roostin400ex]

whats up everyonr im 18 years old and just bought a new 05 400ex and f*ckin love the thing. im in a bind with wat pipe i wanna purchase for it i was leanin torward the HMF Ballance....any opinions on that or another pipe lemme kno!! thanks:ermm:

[Dragon_Slayer]

ALba It sounds good and has great power, Looks good to.:devil:

[Old Head]

I have a powerbomb header and a wb e-series slip on with all 12 disc's installed. It sounds great and pulls really hard low and mid range.

[Honda#4]

i have the e-series also its got great low end power and midrange.

[wolffie]

Powerbomb header and HMF sports series slip on! best combo for low and midrange! go to www.motosport.com ! best deals you will find on pipes! free shipping over $100!!! talk to trx23rider about this combo, he runs it on his quad! very good performance and the price wont kill your wallet too bad! the only bad thing i could think of is that the pipe is a tad bit loud!

[400exstud]

Originally posted by roostin400ex
whats up everyonr im 18 years old and just bought a new 05 400ex and f*ckin love the thing. im in a bind with wat pipe i wanna purchase for it i was leanin torward the HMF Ballance....any opinions on that or another pipe lemme kno!! thanks:ermm:

Good choice. I couldn't be happier with my HMF. Good quality, good power, and good sound. What more do you want?:)

[roostin400ex]

thanx guys any others keep em comin....this helped alot

[roostin400ex]

thanx guys any others keep em comin....this helped alot

[roostin400ex]

another question...when just adding the slip on muffler...should i re-jet????

yes

[roostin400ex]

effects are what if i do not re jet right away?

[quaddy87]

curtiss sparks

Originally posted by roostin400ex
effects are what if i do not re jet right away?

you might foul plugs, youll loose some power (untill you rejet), bike wont stay idled, bike wont start

just dont ride with a new pipe without rejetting

[Matt400ex_17]

Sparks full system, I have a FMF Hi-Flo header and Big Gun Slip on and love it! Some of the best performaning pipe systems that i have seen have been either the Hi-flo FMF or the Power Bomb with a really good Slip on either White Bros., Sparks, Big Gun, HMF, Not a real big fan but prolly Yoshi. Not sure who else makes headers for slip ons but i have noticed on several bikes that i have jetted and worked on that the mix it combos where better than buying full systems. The best full system i have noticed was sparks. by FARRRR.

[hrc]

Go with a fmf hi flo header and hmf sport tons of low end and mid range

Originally posted by hrc
Go with a fmf hi flo header and hmf sport tons of low end and mid range


someone told me HMF sport series with HMF header works the best, does fmf would better?

[Dragon_Slayer]

Definatly re-jet after any mods that would restrict or "open up" the air flow. Lrd is a good pipe to.

[zeus54]

check out ct racing also for another comparison it's similar to the hmf sport in power a little more low end torque everything else is power wise is pretty much the same between them

[rooster_20]

400exXx you might foul plugs, youll loose some power (untill you rejet), bike wont stay idled, bike wont start

I dont think you would foul plugs unless the pipe you bought restricted more flow than the stock one. But you could run to lean and the drivability wouldnt be as good as stock. The reason you jet is to comprimise for the flow of the pipe. Without the jet you dont really gain anything you actually lose power.

[ALLUWANT]

CURTIS SPARKS FULL SYSTEM

[04TRX400EX]

Dr. D is the best that I have found for a reasonably priced slip-on. Great sound, not too loud, and good performance gains.

You will probably only need to rejet if you put a filter on it too. Otherwise, see how it runs. Sometimes you don't.

Check out the huge thread at the top of the 400EX forum- all about best pipe for a 400, hundreds of replies.

[ALLUWANT]

if u dont half to rejet a bike with a pipe then the pipe is not worth a crap the more gas and air the more power. if u stay the same jetting then u will stay the same power

[wolffie]

^^^ yup! well said!


hey, if anyone is looking for jets of any size, go to www.jetsrus.com ! i just orderd a kit for mine! i got 160-195 mjs, a 50pilot jet, float boal replacement screws, and stickers for like $50!!!!!! best deal around!

[jsmith2232]

You definetly want to rejet after installation. I got the fmf powerbomb with the fmf powercore 4 and love it.

[04'400ex'er]

The HMF sport series full system is a great pipe. Curtis Sparks also makes a great full system. Those are probably the two most popular systems on here. I don't know how people on here can say how great slipons with different headers are because slipons are made with the same diameter tubing as the stock header and if you get a headpipe for the slipon it is gonna have to be the same diameter as the slipon and stock header to fit, just be a little less restrictive. I tried to mate my silencer off my full system to my stock header and it absolutely swallowed the stock header. mateing a slipon to a powerbomb just cant compete with a designed full system, I dont care what anyone says. And if you dont rejet it wont run and if for some reason it does you could easily burn a hole in the top of the piston from running lean.

[400exstud]

Originally posted by 04'400ex'er
The HMF sport series full system is a great pipe. Curtis Sparks also makes a great full system. Those are probably the two most popular systems on here. I don't know how people on here can say how great slipons with different headers are because slipons are made with the same diameter tubing as the stock header and if you get a headpipe for the slipon it is gonna have to be the same diameter as the slipon and stock header to fit, just be a little less restrictive. I tried to mate my silencer off my full system to my stock header and it absolutely swallowed the stock header. mateing a slipon to a powerbomb just cant compete with a designed full system, I dont care what anyone says. And if you dont rejet it wont run and if for some reason it does you could easily burn a hole in the top of the piston from running lean.

Well said

[rooster300ex]

Originally posted by 400exXx
you might foul plugs, youll loose some power (untill you rejet), bike wont stay idled, bike wont start

just dont ride with a new pipe without rejetting


One of my riding buddies is going to get a yoshie for his 06 450r, and he's not goin to rejet, he said its fast enough already, i said anytime you mess with any kind of airflow,exhaust flow you need to rejet. he's like no ya don't. and to find out all my buddies that have a pipe said they didn't rejet. i was tryin to tell them it will run lean or rich or something.

[400exstud]

It will run lean (too much air) and start to melt the engine. Just laugh as you ride past them and they have a hole in their pistons.:o

[Dragon_Slayer]

I concurr!!!:devil:

[ShiftFMX]

Originally posted by quaddy87
curtiss sparks

from everything I read, thats the way to go!