Can I put mils on after my off road H install?

[bull8t]

Or do I need to do it before I put it on?

 

[MineralgreyGT01]

Or do I need to do it before I put it on?

You can put them on after you put your pipe on but you will get a SES light at some time (usually after your second long drive or 500 miles). Most people just put them on at the same time since they have the car jacked up anyway.

 

[PDubs]

Do 'em at the same time.