My OCC has a leak at the bottom of the sight tube (not at the screw in point) causing all kinds of fault codes and sluggish acceleration. I removed it, putting the engine back to stock and everything is now normal.

How do I stop the leak? If I can't, I wonder if I could get a refund.

 

first make sure the tube is all the way in. If you tug on it, it shouldn't come out without pressing down on the red collar.

Check to see if the sight tube is cracked or screwed up in some way.

If both those are OK and you still have the leak, I'd get in touch with M7, they have excellent customer service. Before returning it, you may want to consider replacing the fixture, it screws into the can. Or the sight tube, it just plugs into the two fixtures.

You didn't say how long you've had the can. They've sold tons, and this is the first time I've heard of this happening.

Matt

 

when i did mine i cut a notch in the side of each end and pointed the notch towards the can so i can have it all the way in but it can still be functional

 

After taking a closer look, I did cut the site tube too short. It definitely was not fully seated into the bottom elbow. I now need to contact M7 and get a new tube.