Started doing it not more than 20 minutes or so on the drive home. 2nd & 3rd gear while heavy into boost caused it to jump in idle in neutral. Jumps from 1000 to about 2300 repeatedly. Any suggestions? Vac line possibly?

 

and if thats not the problem (wich it probly is), does it do it when cold or just when warmed up?

 

vac line popped off.

 

^^^ nice pic

 

mine does the same ---- but not that high, does it stop after u let it idle for a little bit?