Just had my MBH headers, mid pipe and ipe Exhaust put in with no cats and DAMN this car smells bad at the stop light lol.

I've ran no cats on all my cars and this one is by far the worst smelling lol. Maybe its because its got a big engine?

Lol don't worry about it just think of the performance

Thats why I put mine in with cats. No point in having a luxury car if it smells like a 1970s clunker.

I put cats on my LT setup. I gladly accept the 10-12 hp tradeoff for not having to smell unburnt fuel everytime I drive the car.

Did you go 200 Cell?

Yes, I have 200 cel cats on my setup. It doesn't totally eliminate the unburnt fuel smell during cold starts, but it makes it more tolerable. There is no raw fuel smell once the car is warmed up.

I just added a 435i to the stable and left the silver bullet (C63) for the weekend. Thinking of down pipe ( which I will make ) how ever I don't want the 79 Chevrolet Camaro smell lol.

Sweet! 200 cel cats is definitely the way to go.