Can catted down pipes general any smell?

[MKS Tom]

Mine has gone away too.  They are awesome pipes so I am glad it was not a long-term thing.

What do you contribute the smell going away to?

I am assuming it was gasket material as ZSHO alluded to.  I'm not sure exactly. I did notice that the charge pipe was not put back flush against (thought I had it very tight) from when I had removed it to gain access to the rear plugs when I changed them all the night before dropping it off to have my mechanic install the downpipes.  I doubt it was that, but I do think it seemed stronger when I had the AC on too on those few times I had happen and less of a smell when it was off.  Who knows.   The first night I had pulled logs for you I had ran logs on the other tune and didn't notice it, but that was an very long night as I ran those logs, returned to stock, took 3 hours for the update the SCT, loaded your tune, and ran logs.  All the while trying not to hit deer or alert my local police with my excess speeding at 4-5 am to get log info.  lol

They needed some time to "break in" as these are catted DP that's all! Z

The reason he is asking me is I approached him with the issue prior getting his tune.  I was keeping it out of boost as it was only at WOT in the event I had a tune issue before switching to his.  I began to drive it like a grandmom for 7-10 days prior so it may have cleared out by then without me knowing it.  When I got on it for datalogs for both tunes the one night of getting on it I didn't notice anything but I had also tightened up my charge pipe too that wasn't flush.  I am guessing it is simply the break in for the pipes/gaskets but we were trying to source this for a bit.