HMF competition or performance exhaust?? - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums

greenblazemike · 01-03-2012, 12:29 PM

I'm looking for exhaust for my 2008 YFZ 450 and I'm not sure if I should go with the HMF competition or performance series. What would you guys suggest?

badwill551 · 01-03-2012, 12:39 PM

I recently switched from the Ballance Edition to the Competition series and I love it. Go with the competition, it's hmf's best exhaust.

greenblazemike · 01-03-2012, 12:47 PM

Quote:

Originally Posted by badwill551

I recently switched from the Ballance Edition to the Competition series and I love it. Go with the competition, it's hmf's best exhaust.

And which one of the tips do you use, and how loud is it?? Because as you know, they offer three different sized tips for that pipe. Right now i have my spark arrestor removed from my stock pipe, and i don't want to make it too much louder than it is now, but i don't want it to be too quiet either. from what I've read, the largest tip is just a little bit louder than a removed spark arrestor but i don't know that for sure

yammaha · 01-03-2012, 04:02 PM

it is a little bit louder but its also a lot deeper and sounds a lot meaner

i have the competition and i love it.

badwill551 · 01-03-2012, 04:31 PM

X2 with what he said. I run the 3rd insert the entire time. I'm not too picky on how loud a exhaust is along as it sounds good, then its all good.

badwill551 · 01-03-2012, 04:40 PM

By the way, are getting the slip on or full system?

greenblazemike · 01-07-2012, 04:23 PM

Quote:

Originally Posted by badwill551

By the way, are getting the slip on or full system?

Just a slip on. and what would you recomend as far as jetting is concerned??

yammaha · 01-07-2012, 05:58 PM

i had a 160 main and 45 piolet and i didnt have to mess with the needle when i just had my slip-on. you'll love your new exhaust!

greenblazemike · 01-10-2012, 10:36 AM

Quote:

Originally Posted by yammaha

i had a 160 main and 45 piolet and i didnt have to mess with the needle when i just had my slip-on. you'll love your new exhaust!

does the slip-on competition series come with a mid pipe?? and if it doesnt, will my stock mid pipe fit the HMF pipe??

greenblazemike · 01-18-2012, 09:17 AM

Quote:

Originally Posted by yammaha

i had a 160 main and 45 piolet and i didnt have to mess with the needle when i just had my slip-on. you'll love your new exhaust!

did you have to adjust the jetting according to the temperature?? or was that jetting fine in the hot and cold?

Dunester450 · 02-03-2012, 06:18 PM

just for the slip on, you would need a 170 main, and 48 pilot. if your at an elevation of 900ft, and 60 degrees F.

CAMYFZ450 · 02-03-2012, 09:33 PM

i got a performance series on my 08 and love it its my 2nd hmf i just like how you can pick the color for it and you can pick them up for dirt cheap

01-03-2012, 12:29 PM	#1 (permalink)
greenblazemike Junior Member Join Date: Dec 2011 Location: Pennsylvania Posts: 24	HMF competition or performance exhaust?? I'm looking for exhaust for my 2008 YFZ 450 and I'm not sure if I should go with the HMF competition or performance series. What would you guys suggest? __________________ 2008 YFZ 450 HMF Competition Series Slip-On AC Racing Nerf Bars AC Racing Font Bumper

01-03-2012, 12:39 PM	#2 (permalink)
badwill551 Senior Member Join Date: Apr 2010 Location: Selma, Alabama Posts: 431	I recently switched from the Ballance Edition to the Competition series and I love it. Go with the competition, it's hmf's best exhaust. __________________ 07 YFZ450SE - Full HMF Competition Series Exhaust - Carbon Fiber head light deletes - Pro Armor Revolution nerfs, bumper and grab bar - FCI - E-Sticky Graphics - Hipers - Razr rears with Ballance fronts - Houser stem - pro taper bars - ODI lock on grips - PRM Swingarm skid - LT Houser MGC a arms and HLS Elite shocks

01-03-2012, 04:31 PM	#5 (permalink)
badwill551 Senior Member Join Date: Apr 2010 Location: Selma, Alabama Posts: 431	X2 with what he said. I run the 3rd insert the entire time. I'm not too picky on how loud a exhaust is along as it sounds good, then its all good. __________________ 07 YFZ450SE - Full HMF Competition Series Exhaust - Carbon Fiber head light deletes - Pro Armor Revolution nerfs, bumper and grab bar - FCI - E-Sticky Graphics - Hipers - Razr rears with Ballance fronts - Houser stem - pro taper bars - ODI lock on grips - PRM Swingarm skid - LT Houser MGC a arms and HLS Elite shocks

01-03-2012, 04:40 PM	#6 (permalink)
badwill551 Senior Member Join Date: Apr 2010 Location: Selma, Alabama Posts: 431	By the way, are getting the slip on or full system? __________________ 07 YFZ450SE - Full HMF Competition Series Exhaust - Carbon Fiber head light deletes - Pro Armor Revolution nerfs, bumper and grab bar - FCI - E-Sticky Graphics - Hipers - Razr rears with Ballance fronts - Houser stem - pro taper bars - ODI lock on grips - PRM Swingarm skid - LT Houser MGC a arms and HLS Elite shocks

01-07-2012, 05:58 PM	#8 (permalink)
yammaha Senior Member Join Date: Jul 2011 Location: Michigan Posts: 158	i had a 160 main and 45 piolet and i didnt have to mess with the needle when i just had my slip-on. you'll love your new exhaust! Last edited by yammaha; 01-07-2012 at 08:23 PM.

01-03-2012, 04:02 PM	#4 (permalink)
yammaha Senior Member Join Date: Jul 2011 Location: Michigan Posts: 158	it is a little bit louder but its also a lot deeper and sounds a lot meaner i have the competition and i love it.

02-03-2012, 06:18 PM	#11 (permalink)
Dunester450 Junior Member Join Date: Jan 2012 Posts: 3	just for the slip on, you would need a 170 main, and 48 pilot. if your at an elevation of 900ft, and 60 degrees F.

02-03-2012, 09:33 PM	#12 (permalink)
CAMYFZ450 Member Join Date: Jan 2012 Location: Maryland Posts: 45	i got a performance series on my 08 and love it its my 2nd hmf i just like how you can pick the color for it and you can pick them up for dirt cheap __________________ 08 YFZ 450- Hmf exhaust, hmf jets, uni filter, pro taper bars 04 z400- pro circuit exhaust, dyno jets, cam, nerfs, beadlocks and rzr 2 tires, kn filter, pro taper bars, aluminum shrouds 00 400ex- LTE duals, dyno jets, lte airbox, intake, por taper bars, +2 arms, worcs shocks 06 300ex- 330 bore kit 11.5:1, hmf exhaust, hmf jets, rzr tires, nerfs, pro taper bars, renthal high gear sprokets, ebc clutch 04 honda 90- big gun exhaust, dyno jets ATC 90- all stock

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