ino

iTrader: (1)

My exhaust smells like rotten egg when I run hard. Is it cats? The car is a 00 SS bone stock on everything. If cats r bad can i put straight pipe without putting codes?

blkZ28spt

You will get codes with no cats. Either have them tuned out with something like LS1 edit or HP Tuners, or buy O2 sims. I dislike O2 sims and suggest to always go the tuning route if possible.

Do you plan exhaust mods in the future?

BubaGumpShrimp

iTrader: (1)

go to the auto parts store and look for cat cleaner. Not sure of the name but there are a few products the clean the cats up a bit. You put it in your gas tank...

BrandonDrecksage

iTrader: (1)

why do you hate o2 sims?

xx9666xx

the cats r there for better smell,,to clean the bad smell from the engine for polotion

BubaGumpShrimp

iTrader: (1)

i think he hates o2 sims caues your just putting a band aid on the problem. If an o2 sim goes bad you will need to buy another one. Besides your money is much better spend towards the purchace of a programmer than towards o2 sims espically if you plan on future upgrades

blkZ28spt

Exactly. When I intalled my headers a couple years ago I paid $80 for a pair of sims and one of them didn't work right out of the box, so I had an engine light. When I took the car to speed inc for their duals they replaced it free of charge since I had ordered it from them. About one year later I got an SES light within a week of returning to LS1 speed for a converter swap and basic tune. An O2 sim had gone bad (again), and was responsible for the code.

Considering the price of a "basic tune" or tuning software and how much more you can do besides deleting that one code your money is much better spent on editing the computer than buying O2 sims. After all, in the end I could have saved $80 by just getting the stupid basic tune to begin with.

rawlitogut

Its smells like rotten egg because your running lean.