Stumped here...Just did a mini me swap, everything is done correctly to the best of my knowlegde but im idleing in the 300-400 range. Thoght it was the TPS so had it replaced. The engine is throwing engine code 7 9 but engine light doesnt turn on untill 6000 or somewhere about there.

 

When you did the mini me swap, did you remove that oil jet restrictor? Also, a code 7-9 are involved with the distributor.