Holley efi

Hello everyone has anyone installed a Holley sniper efi on their mopar? Recently installed one on my 440 have a hard time keeping it running while in gear at idle. Here are my engine specs it is a 440 cig bored .030 452 heads machined to handle .600 lift running .544 lift comp cam hyd. roller cam 11:1 forged alum. pistons 727 auto stage 2 shift kit 2000 stallany help would be appreciated
Author: moparnut72