so here is the deal i got a fully built ls fully tuned up to 20 psi .well i drive normally at around 15 psi.decided to crank it to 17 and see how it felt .and it felt pretty good then when i let off the gas my idle was around 1300 then went back to 1k.and my gauge was reading 18 on the vacuum and my greedy was at 91 92.i usually set at 22 and 99+ on my greedy and gauge.ive went threw all the lines nothing is off or cloged.my bov isnt as loud as it was either.and it still hold boost no leaking no spikeing.any advice wut to check will help kinda stumped on this one. thanx

 

someone help this guy out !

 

What cams are you running ? check timing (cam/ignition)... If everything is in time then compression/leakdown. post results.

no vaccuum usually means time for a teardown....:thumbdown:

 

the engine only has bout 4k on ima do a comp check on it later.it was sitting for alil bit

 

compression is good 180 180 179 175 i got crower stage 2 turbo cams timing is good im get da timing light out tomorrow and check out dizzy timing would a slipping alternator belt cause it to lose vac

 

i have vac just not as much as id like or wut it was or should be

 

What piston comp ratio ?

 

JE 84mm 9.5.1

 

JE 84mm 9.5.1........

 

leakdown test it yet ?