RPMS drop low after i rev the engine

[boosted954g63]

Every time i rev my engine my RPMs drop down to around 0 then my dash lights come on and then it bounces back up to normal idle at 900. I checked the battery and alternator to see if that works and it did not. I also unpluged the ISC to see if i changed the idle and it did not change any thing. I am going to do a boost leak test after i get done with posting this. I am totally lost on what could be causeing this. Any help would be great.
Thanks Nick

 

[dafit14]

I have your solution. Where the throttle cable attaches to the intake manifold, I think it's 2 bolts. Disconnect it and move the cable and brace to the right. Idle will go up, I'm sure of it.

 

[this_tsi_8urV8]

Ah, yes, I found it and replaced. Appearantly it comes in plastic AND steel/metal, weird.