Dr. Jeckel
New Member
- Joined
- Jul 29, 2003
- Messages
- 372
I get no KR, except occasional transitional knock(.7*-1*). I'm running 15psi of boost and 91 octane(highest here). What are some reasons for my O2's to drop while doing a 3rd gear WOT run? If I get the car to about 65mph and hammer it then O2's slowly decreases from about 840 down to 770 before I let off. It drops about 10mv's per frame. The O2 sensor is good and is an AC delco. I went through two denso sensors that did the same thing before going back to the ac delco. I don't believe it to be the senor but perhaps something I added to the car. I did everything pretty much all at once so it's not easy to say when it started. Can anyone see anything or think of a reason for this?
I have a fuel pressure gauge on the fuel rail and static pressure is set to 43psi. Maybe someone has had this heppen to them and can give me some ideas. The car runs great and pulls hard on the top end. Any kinda help is greatly appreciated!!!
Thank you, James.
I have a fuel pressure gauge on the fuel rail and static pressure is set to 43psi. Maybe someone has had this heppen to them and can give me some ideas. The car runs great and pulls hard on the top end. Any kinda help is greatly appreciated!!!
Thank you, James.