in the middle of installations

YOYOYOYOYOYOYO!!!! HAHAHAHAHAHAHA !!!
With my grandfather's help, i got my boost gauge working !
here is how it works, if u guys are interest in it :
because the tee is a freaking big universal size which means you can cut to whatever size u want, it would fit the small vacuum hose without cutting the TEE, but the TEE will be too big, coz the vaumm hose to the fpr is short ! so... what can i do??
well.. then i cut both sides of the TEE, which gives me a a big hole on both side of the TEE, then I PUT THE VACUUM HOSE INTO THE TEE !! HAHAHA... but before i put my hose in, i cut a little hole on the hose to let the air goes into my tube through the TEE! and i used some glue to make sure no air comes out between the tee and the hose ! so now the TEE is on the outside of the hose ! THIS IS MY GRANDFATHER'S IDEA !!! HE IS SO SMART !! HEHEE....
anyways, now when the car is at idle, it reads about 13 psi vacuum ! when i step my gas, it reads 0, is this right??

for the a/f ratio gauge, why does it always jumps around? when my car is running, it jumps around, when my car is at idle, sometimes it stops at rich, sometimes it jumps around... how come?? is this right??
and i think my car is running rich, any ideas what is causing this??

let me know ! thanks for all the help guys !!