I am running a stock 02HD silverado and I am wondering how you guys are not getting O2 sensor codes when you are gutting out your cats, also I was wondering how much gain in performance you are noticing. Oh by the way I am running the 8.1 with alli behind her.

 

You either turn the code off in your tune or you can run what they call "O2 sims". They trick the computer into thinking the cat is still there and working fine. Search for O2 sims and you can see what they do.
Performance? Mabey 5hp?

 

Spark plug anti-foulers work for this also.

 

ok and how do I use a Spark plug anitfouler for this?

 

Just delete them with your tune, that's the easiest and cheapest way. It won't run/drive bad with the code if you don't get it tuned out right away either.

 

Damn I was hoping to come in this thread and learn how to properly filet a fiesty feline...****. Well in that case, like mentioned above, delete the codes. The antifouler has been used with much success by many, I have not ever used them so I don't know for sure.

 

Found on Google in 0.18 seconds.....

http://www.preludeonline.com/f28/hom...ective-168992/

 

hahahaha

 

I use a spoon