1g Uncrushed / Unmodded BOV and surging when under light throttle

[EagleTalonTim]

I am sure this is covered in these forums somewhere, but I just can't seem to find this exact issue.... Today, me and a friend installed a Dejon 1g turbo intake pipe which has the recirculation part welded to allow for Vent to Atmosphere. I am running speed density with ECMlink so I decided to go ahead and vent to remove one more rubber hose from under the hood. After installing this pipe and a new K&N filter, I took it for a test drive only to find that my car now surges constantly under light throttle. There is also a slight whistle sound coming from the BOV when slowly releasing the throttle. Is the BOV opening while just driving down the road? Is this supposed to happen and is there a way to prevent this from happening? I have tried 2 different BOV's, one dodge modded, and the other stock. Both did the same thing. No issues when under full boost (20 psi).

 

[1990AWD]

Have you tried boost leak testing to see if the either BOV is leaking? When I starting venting I did nothing and the car behaved just like before.

 

[EagleTalonTim]

I did do a boost leak test and both BOV's do not leak when there is no vacuum on the top diaphram.

EDIT : If it helps any, I replaced the old setup I was using which was the stock rubber intake pipe that was connected to a 2G MAF and a K&N filter. There was quite a bit more restriction than the new setup. I really need to get this figured out today since my car is my DD that I drive 40 miles one way to work.

Come to find out, when I did the BLT, I must have knocked loose my TPS sensor plug which caused it to read all choppy on ECMLink. Got it plugged in good and it is running just fine!