[jonbonazza]

So I busted my FT86SF V2 catback and replaced it today with an Invidia N1 catback. There are no leaks and it sounds great, but when I started her up for the first time and let her sit, I noticed some colorless smoke from the exhaust and a sweet smell (smells like burning plastic). I took her for a drive, and the smoke was pretty bad. Parked her; let her sit for a few hours, then took her for another drive and I didn't notice any smoke, but the sweet smell was still there (albeit not quite as bad). Neither drive could be considered spirited, but were actually closer to babying her.

My first thoughts when seeing smoke and smelling sweetness, was head gasket or coolant getting into the exhaust, but the smoke wasn't white and the smell was a bit different, so I don't think that's it. Plus, it wasn't doing it with the old, damaged exhaust. I inspected the exhaust closer after the first round of driving and noticed that both tips were slightly touching the rear valence, so I thought maybe it was the valence burning, but I didn't notice any melting and it really does look like the smoke is coming from the exhaust itself and not from above it.

Any ideas on this?

It should also be noted that my car is currently running rich from the aftermarket intake, but it doesn't smell like fuel and if it was running that rich, I would be seeing black smoke, not colorless.