Plumbing Question for Powderlites Kit

[gucciboy]

Hey guys, I was just finishing up the connections on a Powderlites kit (used) and discovered a difference between it and the other finished one that is in Benji's shop that I was using as a refference. The used kit has an aluminum reducer in the end of the Tee that comes of the center intercooler and over to the pressure reg and boost tube. The other sled does not have this. The reducer is machined and has 145 scribed on it.
Is this a mountain specific thing? I will be running sea level.
Any help is appreciated
Zach

 

[hlmrx1]

Pics would help, but I think that's for jetting as oppose to changing you main jets in the carb.

 

[gucciboy]

Glad I took it out. Thanks. What are you running for a main in the winter and what do you use on the tar?

 

[hlmrx1]

I run 130 main and do run a restrictor in the line, can't remember the size but was told the less restriction the richer it runs and mine seems to run fine most of the time, more on the rich side though.

 

[gucciboy]

Hmmmm, guess I will put it in. I am starting with 137.5's I have been told to go anywhere from 140-127.5?? I will be running 12-14lb, stock engine with C-12

 

[hlmrx1]

Hmmmm, guess I will put it in. I am starting with 137.5's I have been told to go anywhere from 140-127.5?? I will be running 12-14lb, stock engine with C-12

I was told to run 127.5 initially, but I went with 130's. Had to raise the needles up 1 because it would run lean around 7000rpm (cruising speed) and would pop and burble. It was doing it again the other day a bit, but then it was between -25 and -30c, if I just throttle it or let off it was ok for a bit. Do you have a air/fuel ratio sensor and gauge?