i jus started my car and drove it and its running really really rich my o2 gauge is all the way over and my scan tool show 988mvts and doesnt move i jus got done with cam swap and swapped to 30# svo injectors and 7730 ecm with heated o2 its pegg rich on 02 guage the second i start it but i get no codes for being rich blows lots of black smoke i have a ed wright chip but i put stock one back in but its still the same any ideas? bad 02? thanks guys

 

Well what injectors did you have before? Going to bigger injectors or injectors that work at a slightly level vs voltage as the old ones will mess you up.

 

i had lt1 24# injectors now i have 30# svo injectors but i had chip made for them thanks

 

yeah you'll be WAY rich until you get a different chip. Put the 24's back in. Unless you were lean before you should be fine if all you did was the cam.

 

my chip is for m y cam and injectors its an ed wright chip

 

It's rich. It's putting in too much fuel. Your injectors are too big and/or your fuel pressure is too high and/or your pulse width (chip programming) is wrong for the combination of the other 2 things.

Your chip is obviously not for your cam and your injectors, if it was, it would work right. Your chip is for some other cam and some other injectors (specifically, smaller ones). The proof is coming out your tailpipe. You can't argue with reality.

The stock chip is going to be even worse than a custom one made for somewhat larger injectors, since the stock chip thinks that when the injectors open, 22 lbs come out each hr, but instead 30 lbs are coming out. So it's going to be just pig rich, drowning the spark plugs and blowing black smoke and killing trees for miles around with noxious fumes and drainign your wallet through the gas tank faster than you can fill it back up.

Burn your own PROMs. Be a tuner instead of an appliance operator. Nobody can fix it for you as easily or as cheaply as you can dial it in yourself.