HMF exhaust

[frenimy]

I have noticed that a lot of people have the HMF slip ons. I currently have a DR.D slip on and have been wondering if the HMF is a better exhaust and wanted to know the kind of power the produce. Also if anyone out there has a sound clip of one that would be great too.

[jesseweaver]

the hmf will definatley give you more power. pu a filter on and jet it and you'll be set.

[tanner 222]

just be ready for the noise. they are a lot louder than your DR.D

[TRXRacer1]

Originally posted by frenimy
I have noticed that a lot of people have the HMF slip ons. I currently have a DR.D slip on and have been wondering if the HMF is a better exhaust and wanted to know the kind of power the produce. Also if anyone out there has a sound clip of one that would be great too. If you have the race exhaust the gains would be so minimal you'd never notice. So many of these slip ons out there are basically the same thing. Don't waste your money.

[frenimy]

Is there any major difference between the HMF and the white brothers E-series. And BTW I only have the SS series of Dr.D pipe

[oleboy87]

i had both and i like the hmf more.. but some ppl like there hmf more and some like the white bro better.. its jsut an opinion thing...

[XXXRACER165]

Originally posted by frenimy
Is there any major difference between the HMF and the white brothers E-series. And BTW I only have the SS series of Dr.D pipe


IMO The E-series is not worth getting unless your upgrading to a full system. Power gains would be min. if you just switch to the slip on.

[casey_lamm]

hmf are very loud! get ready. I get alot of weird looks! But the power they produce is really nice. I really like mine. In fact im selling my slip on and putting the full exhaust on.

[AtvMxRider]

I had a WB e-series and switched to a HMF slip on and I couldn't tell a difference in power but I could in noise

[250exkid]

go to the thread 450r shocks on 400ex sticky should be at the top of the 400ex forum go to page ten and mid way through theres a vid of a 400ex with the hmf sport seires slip on

[hornetgod13]

Here's a picture and a couple links to video clips of my HMF Slip-On in action. Both are with the quiet core installed. It's right around 97dcb with the quiet core installed and 102dcb with it removed. California has pretty strict noise laws I can legally drive it on OHV land.
http://media.putfile.com/400EX-HMF-Slip-On-
http://media.putfile.com/400EX-HMF-Slip-On-2

[frenimy]

Thanks hornet I really like the sound of the HMF over the Dr.D I have now and the sound level is important as that I am only about an hour south of you

[hornetgod13]

Originally posted by frenimy
Thanks hornet I really like the sound of the HMF over the Dr.D I have now and the sound level is important as that I am only about an hour south of you

Where are do you live? Bakersfield?

[tman12345]

hornetgod, i want an HMF but i definitaly would have to get a quiet core, so with the quiet core its not insanely loud?

[oleboy87]

no its not crazzyyy loud at all! i know you intended that question to hornetgod but jsut thought id chime in on that..

[frenimy]

Yeah I am in bakersfield

[hornetgod13]

Originally posted by tman12345
hornetgod, i want an HMF but i definitaly would have to get a quiet core, so with the quiet core its not insanely loud?

With the quiet core installed it's not bad at all. I love the sound. With the quiet core removed, it's sure to bother some people.

[hornetgod13]

Originally posted by frenimy
Yeah I am in bakersfield

I'm in your home town (California Ave.) every other weekend dropping my Son off with his Mom.

[TRXRacer1]

If you plan on getting a quiet core you definitely have no need to by an HMF. You won't see any gains over your Dr. D.