yeah, one step at a time. My theory is similar I mean if the o2 sensors are in a open loop then at WOT they cant richen the mixture. Im just wondering if the cars computer is richening the mix b\c the o2's are not working at all. I myself think its somthing to do with the programming of the chip and the injectors. They run alot of nitrous cars 4.6L mustangs and such I dont understand why they are having such a problem with my car. At the same time I feel its the chip or maybe the injectors, I find it wierd that the car was ok and continued to get richer all of a sudden and just got worse as we kepts making passes without changing the tune on the chip. Im not sure if the NMU might be defective, but without shooting the nitrous the car still gets richer so my guess is that the NMU is fine. Now I thought if the 30lb injectors where the problem the car would stay at one rich condition , but the condition keeps getting worse and worse and the CEL says the bank 1 and 2 oxygen sensors are giving a rich condition. I am aware that could be the injectors or improper tuneing of the chip , but it makes me wonder b\c the o2's are original with almost 130,000 on them. Either way I think I will get it straight im just gonna take the car back once I think I have it figured out and go from there. Just really upset b\c I saved up for awhile since I dont have the best paying job right now, and I didnt want to drop $300.00 on something and then get nothing really. I will first go about and change the o2 sensors I mean from what they told me is yes the o2 sensors are in a open loop at WOT but he was saying them being shot they may not be shutting off as fast as they should or maybe at all so it could be doing this. The tuner was confident that he has seen this other times as well and its always the o2 sensors , I dont know we shall see. Id like to put the 19 lb injectors in I think that should have no baring effect on the kit, it doesnt require 30lb injectors , but he has implied that I should have them which has made me think a little b\c the kit usually does all that and takes care of its needs.
I dont know frusterating issue all around.
2011 Mustang GT Premium 6spd
C&L Cold Air Intake
American Racing Long Tube Headers
Catted X pipe
Axle Exchange Aluminum Drive Shaft
Custom Street Tuned