stock engine without cats safe?

[roxas4620]

Ok long story short I bought my 2011 gt500 full bolt ons supercharger swap with MagnaFlow xpipe cat less exhaust setup. The motor blew up, I put a completely stock one back in but exhaust setup is the same. Do I need a tune for my exhaust or is it fine? Any input is appreciated greatly.

 

[RedVenom48]

What were your mods? Did the mods go back on too or just the stock long block?

 

[Mainn]

You'll need a tune for an off-road midpipe, yes.

 

[roxas4620]

No mods aside from exhaust and will it damage anything if I don't tune it immediately?

 

[stop2go41]

I would get it tunes as soon as possible, off road pipes require a tune.

 

[Sonic 03 Cobra]

I would think it would run lean without a tune.

 

[roxas4620]

Wouldn't it run rich due to trying to cool the nonexistent cats

 

[RedVenom48]

Is the ECU now on stock tune too?

 

[roxas4620]

Ecu was flashed to stock and I have no check engine lights on

 

[ElCoyote]

Have your GT500 tuned. Even a mailorder tune from BAMA would do fine. No need to hesitate on this one..

 

[roxas4620]

Upon further investigation I think I have the stock x pipe does that change anything or do I still need a tune