rk ti

Hey guy! I recently just bought my supra and it came with this titanium chargepipe. Looking to sell it for $600 obo. Buyer pays for shipping.

I had a quick question and sorry if this has been answered before but i tried to search but did not find anything. Basically i am looking to purchase a RK TI Signature single exit exhaust but what happens when you delete the exhaust flaps? does it cause a CEL? any adverse issues to how the car...