I am sending in my pcm for tuning. I need to know what codes i should have disabled. To be honest, I want to pass inspection and don't want codes thrown. Below is a list of codes I can have disabled along with the mods i currently have...

I have a 96 lt1, T56, lt headers, cat back, no cats, 224/230 cam package and lt4 knock module.



Disable EGR?
(Competition/off-road vehicles only)

Disable Air (Smog) Pump?
(Competition/off-road vehicles only)

Disable Carbon Canister codes?
(Competition/off-road vehicles only)

Disable rear O2 sensors (No catalytic converters)?
(Years 1996 or newer)
(Competition/off-road vehicles only)

Disable VATS?
(for engine retrofits/swaps)

Disable A/C codes?
(Competition/off-road vehicles only)

Disable Torque Reduction Management?
(LS1/LS6 only)
(Competition/off-road vehicles only)

Disable crank position sensor codes?
(Years 1996 or newer)
(Competition/off-road vehicles only)

Thanks!!

 

Disable EGR? - Do your headers have EGR connection? Do you still have an EGR valve? Do you still have an EGR vacuum solenoid? If the answer to all of those questions is "no", you have to have the codes deleted.

Disable Air (Smog) Pump? - Do your headers have AIR connections? Do you still have a functional AIR pump? If the answer to all of those questions is "no", you have to have the codes deleted.

Disable Carbon Canister codes? - Do you still have the EVAP purge solenoid? Do you still have the EVAP canister in the driver's rear fender? Typically, these parts are not deleted with the mods you list, but only you can know if you still have a functional system. If the answer to all of those questions is "no", you have to have the codes deleted.

Disable rear O2 sensors - Without cats, as you have indicated, you either have to delete the codes, or install "sims".

Disable VATS? - Do you want to give up the theft protection provided by the resistor in the ignition key? If so, delete VATS.

Disable A/C codes? - Do you still have a functional A/C system? If the answer to this question is "no", you have to have the codes deleted.

Disable Torque Reduction Management? - Does not apply to LT1 cars.

Disable crank position sensor codes? - Do you want to give up the ability of the PCM to identify misfires, and tell you which cylinders are misfiring? Do you still have a CKP sensor installed. If you want the ability to detect misfires, you can't have the code deleted.

 

That just about does it. Thanks for the help. I am kind of unsure of what I'd be losing to gain. This should def help with the decisions.

 

With the mentioned mods, where should i have the rev limiter ?

Also, with mods, where should i have my shift points?

In the past I have had "tuner decide" but want to make sure i am getting the maximum power/production for what i have.