Error Code 27B0 + ESS SC

Hey guys

A little help on the error code 27B0. I've done a search and found the following;

http://www.m3post.com/forums/showpost.php?p=15236583&postcount=11

Looking for some support. I believe the code came when I installed my ESS SC VT2-625.

Car runs. However bit of a rough idle. Ever so slight. Some hesitation under initial throttle.

I am going to go over the vacuum lines again to check.

Any insight is greatly appreciated.

Thanks.