Hello,HT im new here as you can see, but I need some help. I installed new PLM bigtube headers on my 94 GSR. I was unable to remove the old o2 sensor from the old headers. So im running without one at the moment(getting new one tomorrow). My CEL is on, the car will rev up to the redline but i want to know if not having one will affect the cars performace.

-Thanks

 

Yes but I don't know by how much. With out o2 feedback you will be running in open loop which will have you running on a "safe" tune assuming your cars leaning towards stock.