I like my Unforgettable...very easy install and it all lines right up.:thumbsup:nlaing said:Unforgettable is plug and play, with the O2 bungs built in. A great fit. pints99 is right though, doesn't really matter if it fits, and if the O2 sensors have some place to go.
I am talking from personal experence...I do not notice a difference at all...in the idle or in gas mileage. Matter of a fact mileage seems to have improved. I have "read up" on all the threads about the O2 sim and about limp mode etc. Maybe im lucky...:dontknow:nlaing said:mastap, this is completely untrue. Removing the cat will "obscure" what the second O2 sensor is expecting. There are 2 O2 sensors, one before and one after the catalytic, so that the engine can change the air/fuel mixture based on the change in the a/f ratio pre and post cat. Removing the cat will cause the engine to run much more rich than it would normally. This WILL affect both your gas mileage and power. Some people call this running in "limp" mode. Do a search for this. There are plenty of people on this board that are MUCH more knowledgable than I am. So far, there is a huge debate about Casper's O2 sim, and whether or not it works. This O2 sim is supposed to change the reading from the 2nd O2 sensor to the ECU to something more like what the ECU is expecting. This will stop your engine from running too rich in limp mode. There is some debate as to whether or not this sim works. Check out the "an O2 sim that works" thread. It's usually in the 1st 25 threads or so, so it shouldn't be too hard to find.
How long did it take before your idle went to "shit"? I have 3000mi on my test pipe.Golgo113 said:i have a burnt front o2 sensor and when i throw the cel code the engine idles like shit
You and I are in the same boat...around 3K. Do you notice any idle problems, MPG decreases? I personally dont...:dontknow:Ninety3octane said:3000mi on my test pipe and no problems...all i noticed was a nice hp increase esp. on the top end
One of my partners at Southwest Car Care programs obd-1&2&3 systems. I asked him this same question.. and he said that the secondary o2 signal has no effect on the performance of your engine. It is only there to notify when your cat is inefficient.mastap said:Yes it surely does...IMHO the cel for the cat doesnt affect performace whatsoever, at least from what I can tell.