is there a certain reason to have bungs in the delete pipe??
If you are deleting y would you need them??

 

No reason that I know of. Mine had 1 and I plugged it...

 

I plugged mine using a 18mm oil pan drain plug.

 

You dont but without the price is higher, dont know why.I used 18 mm drain pan plugs also.

 

They let the flux capacitor breath properly....





The bungs are a leftover from the old days of sim deleting. You needed to have to O2 sensors remain in the exhaust and just removed the temp sensors.

The new programmers did away with all of that.