Should Cats be removed for track only cars?

[spartan]

I am contemplating removing my cats on my GT350 build. It is s dedicated track car so no legal/emissions issue.

Will it need a tune to prevent CEL?
Is there a down side other than the CEL issue and on some tracks there is a dB level limit?

On the plus side:
Sound will go up
A little weight reduction
Higher exhaust flow

 

[TMSBOSS]

A tune, Yes. The ECU is looking for a change between fore and aft sensors for the cats. You will likely eliminate one of the sensors.

 

[spartan]

Is there any reason to leave them on?


Sent from my iPhone using Tapatalk

 

[TMSBOSS]

Thats better answered by your tuner.

 

[8250RPM]

No reason to have cats on any track car. Ditch them lol.


Sent from my iPhone using Tapatalk

 

[Kevin Guzniczak]

The first sensors are wideband and will still be used by the ECU. The after CAT sensors are the rear O2 units for emissions. The tuner will shut off the alert for them not seeing CATS


Sent from my iPhone using Tapatalk

 

[Wheelhopper]

Get rid of the cats and get the car tuned.

I have long tubes on my 2012 with a catless H-pipe and stock mufflers. My car pretty much sounds stock, so just leave your stock mufflers on and noise levels won't be an issue.

 

[cj350]

I'm not running any cats with it pretty much being a dedicated track car. Less weight and the cats are a large heat sink on either side of the trans so imagine it does help with keeping the trans cooler although I did not take note of before and after temps.