raptor pipe jetting

[blue350]

I have a 05 raptor with the airbox lid removed and a gytr filter. Right now I just have the stock exhaust with the spark arrestor removed. I just bought a fmf powercore.I have it jetted with 162.5 main (which sounds like too much). But it runs good now so I guess I will order some bigger mains. Is anybody else using mains this big?

 

[lbjamm]

You might not even need to change it, but I would def do a plug reading.

 

[alex456123]

Ermgerd that's a huge main. It's most likely it's running super rich.

 

[THORrider05]

That must run super rich. My quad runs to rich with a 150 main and i have a PC exhaust, cam, vitos key

 

[blue350]

i havent done a plug check in a couple years but when i took the lid off i believe i had it dead on. nice brown plug. im also at 2200 ft elevation pulls hard all the way through the rpm range

 

[YAMAHAULER]

remember guys it's a 05 Raptor not a warrior different carb and jetting

 

[YAMAHAULER]

if it pulles hard through the whole throttle range then I would just do a couple plug chops 1 at 1/2 throttle and 1 at wot

 

[blue350]

Im goin to bolt the pipe on and see what it does. Check the plug and etc.

 

['00 WO-YA!]

There's no way that it'll be a world of difference in jetting.

 

[blue350]

There's no way that it'll be a world of difference in jetting.

Between warrior and raptor? I was surprised at the jet number too. But it runs good, still waiting on pipe to get here but I know im not rich rich now. I havent done a plug check either though.

 

['00 WO-YA!]

With the pipe man, it's not a drastic change. Now if it had not been rejetted with the prior airbox mods and then you added the pipe to it that could cause a change b/c now it's working as a system to move air and fuel more efficiently.
In a nutshell, a pipe alone is not a drastic change, the airbox and filter alone are not drastic changes but when the 3 come together as a system it's definitely a notable change.

 

[blue350]

So with the pipe over stock it should have a seat of the pants difference? You will be able to tell a diff in power?

 

['00 WO-YA!]

Yes but don't expect a sudden rocket.

 

[blue350]

Ok so I got the pipe on and it sounds good. Thought it would be louder. It feels like it lost a little throttle response so I am goin to do a idle and wide open plug check. And adjust needle up just a tad. I can feel more torque though.

 

[blue350]

Idle plug color is brown. Would like it to be a little richer
mid range is white. Defiantly lean
Wide open is white too.
Thinking of goin up to a 167.5 main
up one clip or another spacer on needle
and maybe up half size on pilot jet. Or adjust on the idle screw. I can never remember, out is richer?

 

[blue350]

Took another shot at jetting tonite. Idle mixture screw was at 3.75 turns out so I put in a 30 pilot. And 2 turns out was bout perfect. Took needle down a notch, which richens.put a 165 main in. Pulled hard until wide open then fattened out. Done plug check. Maybe a fuzz lean. Added a 167.5 main and it pulled good up top. But I think I lost a little throttle response. Not sure what to do next.?

 

[Warriorfreak99]

something seems odd..mine runs rich with 150 main and im a 357 with k&n filter white bros mx4 and modded airbox lid, keep in mind it will be a little leaner in cold weather

 

[lbjamm]

something seems odd..mine runs rich with 150 main and im a 357 with k&n filter white bros mx4 and modded airbox lid, keep in mind it will be a little leaner in cold weather

It's a Raptor. Different carb.