Once out of every 10-12 times i start my car it will start like normal and as the engine comes back down to idle instead of stopping at ~700 rpms and idling it will just drop and die. So after i restart it and give it a little gas it is fine and comes down to idle normally

 

could be a vac leak or to much fuel, any mods?

 

No mods as of yet, it isnt leaking any fluids under the car at all. It runs perfectly fine 100% as soon as it is started

 

so any other ideas?

 

have you even looked for a vac leak?

 

I had about a quart of oil in my intercoolers and once they pulled it out I had no more issues. They never pulled it out from the blown turbo. Take a look in the hos that connects your IC to your turbo. If there is black oil residue you found your issue.

 

What is the best way to check for vac leaks and where are the most common places?

 

i had the same problem... turned out to be crankshaft positioning sensor

 

Iam not 100%sure but I thind that Cincy means an AIR leak (boost or vac) you should get a boost gauge! as he would say.I had a similar problem and I just replace a cracked plastic hose in a engine bay.

 

would a vac leak cause the CEL light to come on? Ive got no lights or indicators at all