you can get a another ECU aftermarket spoon or mugen, more power and your engine light should be off by then.

 

But can I use the stock ECU without hurting my engine or ECU

 

If CEL is on ONLY because of that O2 sensor, then yes, BUT, as you've already said, this masks the possibility that if another "real" issue comes up, you will never know and that issue may be the one that hurts your engine if left unattended.

 

so you mean Im hurting my engine right now? so I should change back if I dont have the aftermarket ECU?

 

[QUOTE]Originally posted by b8b88
[B]so you mean Im hurting my engine right now?

 

thanks a lot