Exhaust Mod: Keeping the CATs and Cutting the Muffler
08-28-2016, 03:12 PM
#11
Senior Member
Thread Starter
08-28-2016, 04:06 PM
#12
Senior Member
08-28-2016, 08:39 PM
#13
Senior Member
Will creat backers sure it's due making a light come on. I installed a one chamber muffler and a code comes on about not enough back pressure. I want to do a 3.5 cat back because it will give it more rumble because my buddy had 3.5 and it gave it a deeper tone and more loud sound.
Second, there is no code for "back pressure" issues.
Third, removal of the muffler will not trip any codes. The computer will have no idea what happens after the last O2 sensor right after the cats.
Finally, lets clear this up. Back pressure is a non existent issue and an old wives tale. 4 stroke engines do not require any type of back pressure to operate correctly. Only 2 stroke engines are effected by back pressure.
Hack away my friend. I am in the non muffler group and prefer that sound. I replace my muffler with a piece of pipe and reattached the stock tailpipe. However I dont' like to spend money on things that dont actually make my truck better.
To each his own
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xMUDKINGx (08-28-2016)
08-28-2016, 08:47 PM
#14
First off, I am not even sure what it is you are saying here. Second, there is no code for "back pressure" issues. Third, removal of the muffler will not trip any codes. The computer will have no idea what happens after the last O2 sensor right after the cats. Finally, lets clear this up. Back pressure is a non existent issue and an old wives tale. 4 stroke engines do not require any type of back pressure to operate correctly. Only 2 stroke engines are effected by back pressure. Hack away my friend. I am in the non muffler group and prefer that sound. I replace my muffler with a piece of pipe and reattached the stock tailpipe. However I dont' like to spend money on things that dont actually make my truck better. To each his own
08-28-2016, 10:51 PM
#16
Senior Member
My truck has no cats and no downstream O2 sensors. It runs great but the check engine light stays on because of the missing sensors. Dual exhaust under bumper.