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Q4 + megabomb = different machine

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  #11  
Old 04-29-2010, 09:11 PM
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Originally Posted by zomby woof
What jet size are you running with that pipe setup?

I just went from the stock header, and muzzy slipon, and 125 main to the same system you have , and the power isn't as good as it was before.
I'm thinking I might need to go 132 jet.
The bike is stock except the exh/backfire screen/airbox lid off.
128 main, no airbox lid, twin air filter (~500 ft elev.) This is with the KLX300R needle and the vacuum port drilled.
 
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  #12  
Old 04-29-2010, 09:16 PM
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Originally Posted by T_i_G_e_R
installed dynojet kit 128 main jet.. kdx 200 snorkel, twin air lightly oiled - bike pulls in low end.. really nice.. just gonna keep it like this.. done.. perfect.. took her out on the deep pebbly sand on north shore long island.. floats right on top with stock tires.. next ... KENDRA SOUTHWICK 2 TIRES 110/100 REAR 80/100 FRONT!
Come back with a report on those Southwick II tires. I've been riding the dunes alot lately and I'm kinda looking for a sand knobby (if not, then Trakmaster II)
 
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  #13  
Old 04-29-2010, 11:14 PM
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Originally Posted by HeavyFuel
This is with the KLX300R needle and the vacuum port drilled.

I forgot, I also did that stuff when I jetted it..
Picked up a 132 today. We'll see how that goes.
My elevation is 800 ft.
 
Last edited by zomby woof; 04-29-2010 at 11:19 PM.
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  #14  
Old 04-29-2010, 11:28 PM
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Originally Posted by HeavyFuel
Come back with a report on those Southwick II tires. I've been riding the dunes alot lately and I'm kinda looking for a sand knobby (if not, then Trakmaster II)
Yup sure thing. I plan to sneak onto the beach at 5am and fish a remote spot. The sand is so lose and deep.. its like riding on marbles.. north shore long island is pebbles and sand mixed .. heres a few pics today of the bike with stock tires.. man I love this bike now
 
Attached Thumbnails Q4 + megabomb = different machine-img_0839.jpg   Q4 + megabomb = different machine-img_0846.jpg   Q4 + megabomb = different machine-img_0851.jpg  
Last edited by T_i_G_e_R; 04-30-2010 at 03:20 AM.
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  #15  
Old 06-12-2010, 06:41 AM
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Help! I bought a KLX300/250 pipe and the slip on is way bigger that my header. Can I buy a klx300 header and be cool? Any advice would be great.
 
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  #16  
Old 06-12-2010, 07:30 AM
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The megabomb header is wider and that is what makes it so awesome... great low end grunt.. just buy one you wont be sorry..
 
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  #17  
Old 06-13-2010, 12:01 AM
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Originally Posted by HeavyFuel
I just put on an FMF Q4 muffler and Powerbomb header, (also a KLX300 jet kit and TwinAir air filter with airbox lid removed) and man this thing got more beans in it than I realized. I've been riding it with the stock exhaust and intake for over 2 years now, and was used to it being a pretty tame bike, but it will get up and run now. So nice! I should have done it sooner, but oh well.

Here's a video clip I did so anyone else thinking about this mod will have an idea of what it will sound like.
Wow the FMF muff/Powerbomb combo sounds so different from my HMF muff/Powerbomb combo! You have a much deeper bassy tone. The HMF is higher pitched, more like a baritone. Also the FMF sounds much more civilized...almost too much so. The HMF is much more obnoxious sounding and raspier. It almost wails at higher rpms.

I don't know which I like better. If I could combine the deep bassy tone of the FMF with the raspy obnoxious rowdiness of the HMF, it would be ultimate!
 
Last edited by FM_Thumper; 06-13-2010 at 12:03 AM.
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  #18  
Old 06-13-2010, 07:26 AM
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Originally Posted by T_i_G_e_R
The megabomb header is wider and that is what makes it so awesome... great low end grunt.. just buy one you wont be sorry..
Man it's too late. I freaked out and order a Four Stroke Works KLX300 header.
 
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  #19  
Old 06-13-2010, 11:00 AM
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Originally Posted by T_i_G_e_R
The megabomb header is wider and that is what makes it so awesome... great low end grunt.. just buy one you wont be sorry..
When you say wider you mean the diameter? Wouldn't the bigger diameter improve high end rpm rather than low end torque?
 
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  #20  
Old 06-15-2010, 05:51 AM
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Originally Posted by FM_Thumper
When you say wider you mean the diameter? Wouldn't the bigger diameter improve high end rpm rather than low end torque?
I have heard the same thing on here too. That the back pressure helps with the low end torque. I messed up kinda by getting the bigger pipe, but I want to up grade to the BB351 and a FCR35. Or something similar.
 
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