just got and installed my new h-pipe. i noticed that it runs alittle richer now. how long will my o2 sensors last? should i cap and bypass them?
love it, noticed it pulls alot harder now.

 

You're not getting the "check engine" light?? You need to put MIL eliminators on that to fool the computer that you are running with cats..that should solve the problem

 

I just got my MAC O/R H-pipe on also, with flowmaster mufflers I love the sound. Its really deep and and sounds mean. It pulls alot harder for me in the low end now and I dont see a decrease in top end power at all, if anything it feels even stronger in the top end now also.

 

what tells you that it is running richer? don't understand. the O2 sensors were in front of the cats I believe, so they are seeing the same exhaust they were seeing before, so why or what is telling you it's running rich? unless it is a tailpipe sniffer reading the unburned hydrocarbons that the cats used to help burn up, I don't quite see why you say it's rich.

 

it has four o2 sensors. two before the cats and two after. plus if you now anything about cars, you can smell it when your car is running rich. my a/f meter also tells me it runs richier more than it did before the new o/r/ pipe.

 

you'd also be able to feel it in the throttle responce.

 

Well now, since you know so much about cars, go ahead and remove the O2 sensors and plug the holes and get rid of the connecting wires too and then tell me how well it runs!
Your attitude will get you no where on this forum!

 

Yea man be cool roundman is a cool guy he knows alot about cars, plus he is very politically inclined. You got a good exhaust set up going on there I dont know why it would be running rich I just installed my MAC O/R H-pipe and it seems to be running awesome.

 

How long have you had it on?If not long, I would give it a few days to let the computer adjust, and check it again.

Todd

 

Disconnect the negative battery cable for at least 5 minutes to clear the KAM (keep alive memory) and see if this doesn't help the ECU adjust to the new pipe.
and Razor19, me politically inclined? naw, you must be mistaken! LOL