LenS2K

Hey guys I recently purchased my 00 s2000 and it came with a testpipe. I swapped it out for a cat to get the car smogged and I can't seem to find which brand it is. I can't find any markings or engravings... Id like to know . It's inside diameter is 60mm so I'm assuming the outside is 63mm. Also, if I put it back on will I see some gains ? It would be paired with my stock exhaust or maybe a invidia q300. Here are some pics...

baZurk

It is hard to tell which TP it is but you will see gains over the stock cat.

nitewing117

Well, I can tell you which brands it isn't:
Berk has a built-in CEL fix
T1R has tabs to mount the factory cat heat shields

this one has neither of those.

LenS2K

I thought this was the built in cel fix? Or am I wrong?

wisdom

That's just the threaded portion. A built in fix will have to have an extension on top of that.

Looks like an Invidia piece to me.

flanders

The chamfering on the three bolt flange definitely looks like Invidia.
They only got the cel fix version in 70mm.

rednikos

maybe its a custom tp