Ziggy*

86 stock, 85000 miles. Been slowly losing power. New mufflers, "Y" pipe. Pulled O2 sensor, Got to high of pressure per FSM.....Delete or replace my CAT ??? No emission laws here, Just block off the hose running to motor? Going to get the rebar out tomorrow after I drop the "Y" pipe at Cat ....

aklim

What hose running to the motor? There is an inlet and outlet to the cat and there is a metal pipe that goes to the AIR system. You can delete everything you want to clean up the motor but touch that cat and the emission ***** will come after you till your children are long passed and buried. Enough of the PSA. You can delete the cat but the downside is you will have more drone. I installed a cat after I deleted it for just that reason. Supposedly if you hollow out the cat, it will be worse than if you put a straight pipe.

JrRifleCoach

Get a hiflo cat from Magnaflo.

No problems and smells better

aklim

Why do you care how it smells? A few seconds of bad smell at worst does not bother me. OTOH, if someone is willing to do a suicide by car, it is important. You don't want a bad smell to be the last thing you notice.

Ziggy*

Still love your picture ....The pipe running up to "AIR" Will that screw up my ECM if I block it off?

Ziggy*

Lot of people up...It's my car . Don't care about noise or drone...Pipe or take the rebar to the "CAT"

Ziggy*

You need that info from the EGR senser( 1 only on 86 ) The tube going up to the AIR system, Has me worried...Thanks

aklim

ECM does not know. All that happens is there is a signal to activate. There is no feedback so the ECM doesn't matter

aklim

If you are OK with the increase in noise in the car, I'd cut it off and weld a pipe

aklim

I took the pipe off and removed all the AIR system with no ill effects