well i just installed the 3.12 pulley along with the motordyne 5/16 spacer, but i cant feel the diff with the new mods...since i used to hit 7 psi with the 3.33 pulley and now i can barely hit 8 psi...
the spacer is perfectly installed , no leaks...
what do u guys think?
and yeah still not TUNED

 

The belt tends to loosen up and stretch a hair after the car is warmed up. Retighten it would be the first thing. See if that helps. Then get a tune.

 

I always found that the belt actually gets a little tighter after its warmed up . ....But , yes tighten the belt up some and get it tuned .
Hunting for leaks is tough . They may not show up untill your under boost conditions .

 

I would get it retuned bc the spacers and the 3.12 pulley will make u run leaner up top. I wouldnt recommand boosting pass 6K if u want to do WOT runs down the streets. Do u have a wideband, if so u should have a better idea what your A/F ratio is at? Also, it's hard to tell a difference going from 7 to 8 psi bc u wont see 8 psi until passing 6K rpm.

 

exactly, thats what i did
the thing is that the the cog-ed belt (not the s/c belt) cracked
i have to replace it asap, hope to find one here!
y do u think that happened?
and 10x guys for ur help!