Hey guys. I need to free up some extra cash so I was wondering if putting my stock ecu back on instead of my aem 1052u would hurt the car at all? Only mod I have is a TP and the ems was tuned without it. Any insight is helpful. Thanks in advance.
-Andy

 

It's fine. Just note that you're likely to get a check engine light from the test pipe unless it has a secondary O2 fix built in.

Tim