I need to replace my catalytic converter, 2001 NB2. I need to keep it within the rules for E Street.
The Easy Button is to run by the muffler shop and have them replace it. Done.
I don't do any welding, but for more cost, difficulty, and possibly a bit more horsepower, I could order a complete mid pipe assembly with a converter. I just don't know whether that would be class legal.
Eventually, I'm going to probably replace the muffler, if not for a power increase, at least for a weight savings.
Recommendations comparing potential weight, effect on horsepower, class rules and cost?
IIRC your only technically legal replacement is an OEM/OEM replacement converter, not the tempting "high flow"/Mid pipe combos. Exhaust mods in "Street" class can only be made from post-cat to the tailpipe, so I believe an integrated mid pipe/high flow would violate the rules.
In reply to kazoospec :
As I thought after reading the rules. Off to the muffler shop.
Somebody would rather you go to a canoe shop, it appears.
Floating Doc said:
In reply to kazoospec :
As I thought after reading the rules. Off to the muffler shop.
Aaand... back from the muffler shop. Old cat was pretty clogged. Even though I shouldn't be surprised, I still have to remark how much harder it pulls.
alfadriver said:
Somebody would rather you go to a canoe shop, it appears.
Yeah, I sent the link to the canoe notification page.
Funny comment, thanks.
Snrub
HalfDork
11/7/18 11:42 a.m.
GRM did a test of various cats on a Miata and found very little difference in power. I believe it was around 0-2hp.
Snrub said:
GRM did a test of various cats on a Miata and found very little difference in power. I believe it was around 0-2hp.
You know, now that you mention it, I think I remember that.
