how hard is it on our valves (hemi) to run with NO cats???? Im ready to finally put my headers and y-pipe on and cant decide if i wanna run them on it or not???? pro's/cons?????? thanks

 

good question. i know some guys that have hollowed theirs out in order to get rid of the restriction but still appear legal. i'm interested to know the answer.

 

shouldnt cause any problems except for the rear o2's throwing codes

 

wont hurt anything. "check engine" light will come on, until you put in some o2 simulators. will be loud, very loud, but also make it a rough ride...due to it firing right under your cab.

 

what do you mean rough ride?

 

If you end your exhaust under your cab with no cats, or have cutoutsyou will feel your cab rumble.....But I think the guy is just asking about running a full exhaust without cats installed??

 

thats what i want. i already have the full exhaust i just want to cut out the cats. and i would do the non fouler trick to get it not to throw codes

 

i vote catsl. the minimal increase in top end hp is no justification for increasing emissions 10x or more. i'm no tree hugger by any measure, but i just wouldn't want to inhale that ****, or cause anyone else to inhale it.

 

Check local laws before doing anything.

 

local laws are gonna say you need all that emission ****, it just matters if you have inspections....if you dont....who gives a **** then? i just wanted to know if it could do any damage to the engine...if not then im gonna cut them out completly or gut them....if it does harm it, then ill look into some hi flows from magnaflow