what will I have to know to do this? I know I will need some 02simms. I am getting a code for" catylist efficency below threshold" so I figured this would fix the problem. am I going in the right path?

thanks,
mike

 

If you are going to run O2 simms then why dont you just eliminate the cats all together with an offroad y pipe

 

The cats are warranted for 8 years and 80k miles. If you are w/in the limit get them fixed. Otherwise be a responsible car owner and run some highflow cats. Its a measley 2 hp difference between them and open pipes.

 

I do want to eliminate the cats. where do I find an oryp that bolts to stock manifolds and the loudmouth? I did not think the was a y-pipe that bolted to stock manifolds and took the place of the cats. I dont care about hp gains just want this problem fixed. so I figured gut the cats or find pipes to put in their place. opinons?

 

http://www.lmperformance.com/564/1.html

Or im sure an exhaust shop could fab one up for you that would work.

 

the mac oryp says its for 98-99. but will it still bolt up on a 2000?

 

Call and ask or look around for one for a 2000

 

thanks for your help

 

Here is a bit of info to chew on about running w/out cats. I was rummaging through some old mags and found the September 2000 issue of Car Craft.

They did a test to see if cats robbed power. Test was on a supercharged 305 5spd on a chassis dyno so all the #'s are RWHP.

w/out cats Max hp: 321.2 Max tq: 356.9

w/cats Max hp: 319.6 Max tq: 364.3 the pull w/the cats netted more torque across the entire RPM range.

This will also help keep the EPA Environazis out of your area too.

 

Take them out......