What's up guys! New to the forum. Need some help. Just had magnumflow HFC installed also had them remove my resonator. Still have stock exhaust on. It sound good, but my car idles between 600 to 200 rpm. Is that normal or does it need to higher? Info would be great.

 

SEARCH....idle reset, s/b 1200 cold and 700 (+ or -) warm. This happened to me when I left the negative side of the battery off too long, ECU forgets what it's supposed to do.
Gary