Any suggestions on which jet i should use would be great. I am about to install both of these..hopefully they'll compliment my K&N air filter well.

ill give you guys/gals a butt dyno as soon as I get it completed.

-Mike

 

Well, over at HMF, it looks like they suggest going with a 142 main. Maybe you should start there? I mean, it still is a utility pipe and all.

 

hes useing a dyno jet kit, so the numbers are compleatly different, i suggest a 138, or something of that nature wait a second, if i remember the biggest jet included was a 130? i used a 128 i belive they said 126 but it didnt run right.

 

I just used a 124 (which they said to use as the main)

i didnt really notice much of a difference with pipe installed and all aside from low end torque (can ALMOST) pull wheelies now.

I asked them about going with the "128" on the phone and they just kept saying use 124 as recommended. It idles great...slight bog I think at low rpm but then it rips.

Havent ridden ont he trails yet (looking for someone to ride with in buzzards bay MA area.)

I'll really be able to give you a butt dyno when I use my friends completely stock vinson vs. my vinson. I know going down the street I hit 58 MPH and I let off the gas. It hit 58 pretty damn quick and reached the end of my street in no time. I horrified the neighbor walking their dogs tho with my new exhaust which so far I'm almost saying I regret not keeping the old one. Its not overly loud...just louder than my other one by a few dB's

-Mike

 

Man, I really preached to people about the FMF Powerline, but it sounds like the HMF Ecosystem may actually be the way to go.

 

Got some interesting news. They don't make the QS1 for and Eiger. Actually, the last 3 listed on their site (Artic Cat, Vinny, and Eiger) are going to be removed and they will not produce a pipe for them. I found this out only after calling to order it, even after talking about it on their forums. They said that the QS1 didn't work with the AC or the Eiger, but were still working on the Vinny. Guess I'll give Big Gun a call and see whats up with their stuff. Talk about discouraged!

 

Hey MJE Ialso live in buzzards Bay and have a 2004 vinson yellow and am also looking for someone to ride with in the buzzards bay area My vinson is stock but I am looking to modify lets get together

 

Start with a 138 d/j main and tune from there.

 

I have the QS1 and use the 124DJ. hmf said to use a 122 but that was to lean. I bet you can clear up that bog on the bottom by going to a 38 pilot jet. I had the same problem and that fixed it.

 

i have to change my pilot, what the stock a 36 or something? also where can i order the new pilot from?