My installer SHOULD be putting in my gears and XCal II any day now...but he has been saying that for about a month.

He is an XCal dealer/tuner, so I am going to let him give me a kickin' custom tune.

I just bought an o/r X pipe...should I go ahead and put it on or wait for my installer's schedule to free up so that he can shut off the O2's?

It could be two days, it could be two months...I just don't know. [&o]

 

By some mil eliminators , throw the pipe on and then let him do the nasty when he gets around to it.,,
Depending on your pipe you may need some extenders as well. You could be looking from 60 to 90 bucks for those parts total.If extenders are not needed the mils will run ya 50 to 60 bucks.
Buy you a stud kid from napa auto parts as well for that h-pipe incase the drivers side manifold / mid pipe entry needs that extra tighteneing room.The stock studs have stops on them and have given some of us headaches due to our choice of pipe.

 

I'd wait before I spent $60 on MIL Eliminators-which are only reliable half the time. I won't need O2 extenders, only '04's and maybe 03's need them, I know I don't.