thinkin about either gettin rid of the stupid thing or hollowing it out... my only question is since there are O2 sensors before and after the cat will it throw off a code or make the truck run poorly.. or just in general mess anything up? the only reason im weary is because of the sensors.. other wise it would already be done.


thanks- Jay

 

there are many threads...do a search (someone else would have said this)

and you need to do the non fouler trick to it.

 

and if you do get a cel/code and the non fouler trick does not work use this http://www.thefastman.com/02Simms.asp

 

i 98 3.9 with no cat...my sensors are unpulged..when they are pluged in i get about 8 mpg when they are unpluged i get 20mpg...when it rains it misfires really bad...

what is the non fouler trick ???

 

^ Your truck must be running stupid lean!

 

lol it may be but i put 20,000 km on it with it unpluged and its still going

 

Haven't messed with the cat personally, but I did look at Jegs for a 2.5" mandrel bent midpipe with no cat. Would definitely help flow and it was only $125. Might work well for one of you guys

 

id just get the magnaflow high flow cat off summit for $206

 

or make a y pipe from autostore piping for about 30 bucks (like i did)

 

I have been running no cat for about 6 months now, have not thrown a code. I have the pre-cat 02 sensor in a pipe and the post-cat 02 sensor ziptied under my truck to the tranny.

Havent thrown a code yet have close to 7,000 on it.