Will No CATS HURT my truck
#2
#5
#6
diesels didn't have a downstream o2 sensor. if you remove 2 of the 4 it will be fine. if you remove all of them you need a 1/4 ohm resistor in the signal wire on the downstream o2's and it will be fine. i also reccomend just replacing all 4 with 2 high flows i have no cats and i would like to add 2 high flows when i get the money
#7
Trending Topics
#8
Originally Posted by Justin97
will it not make my truck run ruff if i dont put nothing back under it
Originally Posted by way fast witey
diesels didn't have a downstream o2 sensor. if you remove 2 of the 4 it will be fine. if you remove all of them you need a 1/4 ohm resistor in the signal wire on the downstream o2's and it will be fine. i also reccomend just replacing all 4 with 2 high flows i have no cats and i would like to add 2 high flows when i get the money
#9
On a stock truck, or one with just an intake, I dont see how cutting the cats will help much. You might get 2-5 hp, but that is not going to really make a differenece.
Just an FYI, it is a federal offense to tamper with the emissions system on a pollution controlled vehicle. Why risk it for such a small gain?
Just an FYI, it is a federal offense to tamper with the emissions system on a pollution controlled vehicle. Why risk it for such a small gain?
#10
1. Your truck will run exactly the same with or without cats.
2. You will get a check engine light without cats.
3. Your gas mileage will not go down without cats.
4. Your power will not go down without cats.
5. Your exhaust will smell like raw fuel without cats.
6. You will have to turn your truck off at drive thru's or any time your window is down to keep from stinking yourself out. (just like a diesel)
7. Your truck will be louder, both inside, and outside the cab.
8. A set of mil eliminators (under $20 or make them yourself) will fix your check engine light.
9. You will probably regret cutting them off. But maybe not.
Nope. That will not work. You have to have an RC circuit. I'll post a link on how to make one tomorrow.
2. You will get a check engine light without cats.
3. Your gas mileage will not go down without cats.
4. Your power will not go down without cats.
5. Your exhaust will smell like raw fuel without cats.
6. You will have to turn your truck off at drive thru's or any time your window is down to keep from stinking yourself out. (just like a diesel)
7. Your truck will be louder, both inside, and outside the cab.
8. A set of mil eliminators (under $20 or make them yourself) will fix your check engine light.
9. You will probably regret cutting them off. But maybe not.
Originally Posted by Patman03SprCrw
Cool! So the O2 sim is just a resistor?
#11
Originally Posted by hllon4whls
Just an FYI, it is a federal offense to tamper with the emissions system on a pollution controlled vehicle. Why risk it for such a small gain?
-Patrick
#12
Originally Posted by Patman03SprCrw
I noticed more torque, and more top end (hp) power.... and i did it to where you would have to take the heat sheild off of the cat just to even get a glimpse at the top side of the cat where i gut a small window out.
-Patrick
-Patrick
#13
#14
Originally Posted by Patman03SprCrw
yah eventually ill cut them back open and run a pipe through the middle of the housing, for even better flow characteristics, and the exaust wont "pop" as much when i rev, or coasting. (not that its obnoxious now)
#15
thanks for all the great advise the main reason i wanted to cut them off is because i think the right cat is getting stopped up its makin a funny noise and plus were im from everyone drives chevy's and rag my ford cause it aint as loud but i still pull of and leave them in the dust everytime