Thread: Deleted Cat now worse milage?

Originally Posted by BillBoost37

Some could benefit by taking a minute and read the sticky about 01+ cars.

Deleting the code isn't going to fix anything except a light bulb turning on.

Where is this sticky located? I can't seem to locate it.

Top of the tuning section.

http://www.grandprixforums.net/removing-rear-o2-sensor-01-newer-pcms-things-you-should-know-7092.html

Thanks Bill

[QUOTE=gtpeddie;1123019]I use my DIC because I have no fuel guage, my range doesn't work either so I go by fuel used and mileage. I ran out of gas a few times, its not accurate but it works pretty good

I havent had a working fuel gauge since Ive bought the car in 2010[/QUOTE

I did this at first with the car but it was routinely 3 or 4 gallons off. it works well with our minivan though. its pretty accurate. my other two gtps dics worked well. but they also had working fuel gauges.

Yep ditto on much said here. I'm 01 I tuned out the code got an emulator and still have the "loop". I'm putting a cat in.

appears that I will be getting a cat sometime either today or tomorrow. I found that there is a local with a bonnie that is modded and he may have a DP, but I won't know until I call today.

Sry about the late response but yes the spark plug non fouler will work. I have a 04 compg and when i put in my headers even though the code was removed i would still get horrible gas mileage. The car goes into open loop and this is really the only way to fix that. It restricts so much exhaust going to the rear o2 sensor to make the car believe there is actually a cat. After i did it my car was getting like 9 mpg, it jumped up to 15-16 city.

thanks, but I bought a cat yesterday and will have it welded in tomorrow or Saturday