Fabspeed exhaust (or any secondary bypass pipes)

[heyjae]

Originally Posted by navair

I've been researching this site for aftermarket exhaust for my '02 S, and have narrowed it down to the PSE mod (Fister or DIY), or the new Fabspeed 2 chamber with seconday cat bypass built in (to avoid drone).
Are there any California owners here that have the new Fabspeed, or are using secondary cat bypass pipes, that are getting away with it at smog time???? I' sure the car will still pass the limits, but what about the "visual"?

TIA, Roger
2002 lapis blue S

Here's my guess. I think many smog places think the secondary cats are the primary cats and pass cars based on seeing those. The primary cats are hard to see if the car isn't on a lift and/or you are not familiar with the car.

[navair]

Thanks for the comments guys! I talked to Fabspeed, and did some more research into Kalifornia's arcane smog laws (and ooh what fun that is)..Fab says their system is Ca legal, but they do delete the aft cats, so technically it's not. They say the aft cats are not in the OBD-II loop (true), but to be truly CA legal they'd have a CARB cert, which they dont. As you pointed out, the reality is any drive thru smog station wouldn't know what to look for, and (as Fabspeed insists), the exhaust would pass the sniff test regardless. a crap shoot really, or reinstall stock muffler every 2 years...

[ekam]

Well you do live in commiefornia...

[panameras]

Sorry to go off topic, but has anyone tried THIS EXHAUST which the seller claims 'no Cabin Drone, unlike most aftermarket Mufflers for the Boxster the NHP Exhaust Muffler for the Boxster eliminates Cabin Drone.'

Looking at the design of this particular muffler its very similar to most other ebay mufflers for the Boxster and apparently ALL of them do DRONE.

[navair]

I looked at that- another Chinese (not that they can't weld) exhaust, identical to the Deluboz "Topspeed" sold on Ebay, for $300 more

I'd get a Topspeed. I suspect on reason the Fabspeed doesn't drone as much is the connecting balance pipe left/right