boost cutting out need help

[teevee]

I recently installed a dejon upper intercooler pipe and ARO manual boost controller. They worked fine, I was boosting 20 psi and had to tune it 4 times in order to boost a steady 16 or 17 psi. Randomly my car wont hold a boost now. I put the stock boost controller back in and it would hit 15 psi then drop down to 10. Where as before without the upperintercooler pipe and boost controller it would hold perfectly at 15. I put the MBC back in and now it will spike up to 15 or 17 and then drop back down to 10 or 12.

 

[4GSixty3]

Try looking at your connections on your UICP. Could be loose.