have aquick question I jsut installed a twin turbo setup on my fox body. I have edelbtock heads/intake, and f-cam and I have almost no vacume at idle??? I mean I have like 5-7 inches of vac. any one have any ideas I have tried everything that I know to try. The motor is fairly frersh (less than 15k) the ecar did set for awhile though. I have no idle problems or anything like that that is usually associated with a vac. leak. I have checked all the lines numerous times. I have eliminated most of them there are only a total of I thin 6 lines total. Any help wouldd be greatly appreciated.

 

is the car idleing high whats the idle set at? if your idleing high your vaccume will be low

 

While I do not have a twin turbo on my mustang, I do have a 351W with a healthy cam and I too had about 8inch of HG at idle, I had to install an electric vacuum pump from summit, it was about $300 and i now have about 23inch of HG at idle...

 

So, did you have 22-24 IN VAC before the turbo install using the same motor?