Register a SA Forums Account here!
JOINING THE SA FORUMS WILL REMOVE THIS BIG AD, THE ANNOYING UNDERLINED ADS, AND STUPID INTERSTITIAL ADS!!!

You can: log in, read the tech support FAQ, or request your lost password. This dumb message (and those ads) will appear on every screen until you register! Get rid of this crap by registering your own SA Forums Account and joining roughly 150,000 Goons, for the one-time price of $9.95! We charge money because it costs us money per month for bills, and since we don't believe in showing ads to our users, we try to make the money back through forum registrations.
The Something Awful Forums > Discussion > Automotive Insanity > How can I get the streetability back into my cammed LS3?
 
  • Locked thread
Fender Anarchist
May 20, 2009

Fender Anarchist

JaySB posted:

Since we're sort of turning this into an LSx thread….

My Vette just decided to throw the P0420 code after I installed ARH headers with high flow cats and a new exhaust system on it. Likely cause 02 sensor or bad cat?

Possibly just insufficient cat, at least for what the stock PCM is looking for. It's possible you could get it tuned to accept the new value, though that could cause complications depending on where you live and whether or not you have to deal with a sniffer test.

* # ¿ May 13, 2014 05:19
  • Quote
Adbot
ADBOT LOVES YOU

# ¿ May 12, 2024 10:36
  • Quote
  • Locked thread
The Something Awful Forums > Discussion > Automotive Insanity > How can I get the streetability back into my cammed LS3?