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Discussion Starter · #1 ·
Hello. I just got a Trinity tuner. My car is up on ramps as I'm removing the RT manifolds. Im about to install the SRT headers this weekend but was curious if I can turn off the rear O2 sensors with the tuner without having to get a custom tune. I'm considering buying Borla long tube headers instead of using the shorty's.
 

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Needs to be a custom tune. Go with the Borlas and get a tune from Johan
 
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Discussion Starter · #3 ·
Oh man, I was hoping to just turn them off. I hate to spend money on a custom tune after spending so much on the headers. Thanks for the response.
 

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Can't speak from personal experience, maybe someone can, and you may already be aware of this, but my muffler guy, said to drop the cats you can run a resistor to trick your o2 sensors.
The EPA would crucify a company that sold tuners to the general public that alters any part of the emissions systems.
 

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Oh man, I was hoping to just turn them off. I hate to spend money on a custom tune after spending so much on the headers. Thanks for the response.
The custom tune will enhance your headers a lot more than not tuning for them. If you go headers and catless, you're going to run lean on the stock or canned tune unless you dump fuel in and without a wideband you'll never know how much. There are 02 simmulators that you can do but your best bang is to get a custom tune that will turn off the rear 02s and enhance the performance of the headers. Pick a good tuner and pull some logs and they should be able to fix you up via e mail tunes.
Can you get it inspected with headers and catless? I have to put my stock mids and stock tune on to get mine inspected in the Austin Area.
 

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Can't speak from personal experience, maybe someone can, and you may already be aware of this, but my muffler guy, said to drop the cats you can run a resistor to trick your o2 sensors.
The EPA would crucify a company that sold tuners to the general public that alters any part of the emissions systems.
You can't buy simulators anymore and they really aren't worth it anyway. Why you guys spend so much time and effort fooling with your exhaust system for the tiny bit of gain you might get is pretty amusing. You want some real power at the touch of a button, get your car on the bottle for a fraction of the price of an exhaust system with 3-4 times the power added. You can add 100+ hp for $1000 or less and have a stock car the rest of the time.

Today you can buy cars with 300-400-500-600 and now 700hp right off the showroom floor, why bother with hacking a car up anymore?
 

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You can't buy simulators anymore and they really aren't worth it anyway. Why you guys spend so much time and effort fooling with your exhaust system for the tiny bit of gain you might get is pretty amusing. You want some real power at the touch of a button, get your car on the bottle for a fraction of the price of an exhaust system with 3-4 times the power added. You can add 100+ hp for $1000 or less and have a stock car the rest of the time.

Today you can buy cars with 300-400-500-600 and now 700hp right off the showroom floor, why bother with hacking a car up anymore?


I didn't buy mine to stay stock. I like to wrench on my cars
 
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You can't buy simulators anymore and they really aren't worth it anyway. Why you guys spend so much time and effort fooling with your exhaust system for the tiny bit of gain you might get is pretty amusing. You want some real power at the touch of a button, get your car on the bottle for a fraction of the price of an exhaust system with 3-4 times the power added. You can add 100+ hp for $1000 or less and have a stock car the rest of the time.

Today you can buy cars with 300-400-500-600 and now 700hp right off the showroom floor, why bother with hacking a car up anymore?
Glad we could brighten your day with a little amusement.
So that it may be within reach for you, and not beyond you, I'll give you some reasons.
First, it's a hobby for some of us. Maybe like me, they didn't care much for the sound of the factory exhaust (thanks California) so, without any hacking involved, I/we modify it. Making our own changes that, when adding the "tiny" changes up, make a difference. N2O is great at the track, if you don't get too aggressive with your shots and have a rebuild on your hands, but unlike our amusing modifications that are constant, is extremely short lived. Plus I don't track my car, so I don't have any need for it.
Anyway, hope I helped you understand that we don't all have the same goals, wants, needs ect as you.
 

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Discussion Starter · #10 ·
I have decided to stick with the SRT manifolds. I forgot I use remote start with the garage door open and I don't want the foul smell without cats in my house like a previous truck I had. I have the manifolds all bolted up just need to retighten then move on to the mids tomorrow. I might still try a custom tune for the heck of it. And yes I realize the factory cars have come a long way be I love to tinker with stuff and can not leave anything alone.
 

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With a custom CMR tune, the rear O2 sensors can be left on. The most current version of the CMR software enables the tuner to suppress any CEL codes associated with the exhaust system. I have had this done to both of my Challengers and I now have no issues passing emission inspections. This is called electronic warfare at its finest.
 
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