Do you guys running these cutouts putting the cheap paper gasket behind them, maybe silicone, or nothing? With my manual caps, the paper gaskets are starting to leak. I thought about bolting them straight to the cutout with some copper gasket sealer, but I don't know. Not in the instructions

 

Got all the wiring ran and going to install today if work is slow, anyone want to chime in?

Thanks,
James

 

Used red High temp rtv with no gasket. No leaks so far. These e-cutouts are badass!

 

A little late on the reply but I just ran the gasket that came with the cutout. I havent had any leaks so far. The only problem I have is mating the flowtech to the s pipe. I have some reengineering to do next spring on it. Put the cutout in place of the cat and did it quickly so I have a 3 inch run or so of small pipe between the flowtech and s pipe that rattles and wont seal tight Have a new s pipe ready to go in though to remedy the problem.