fortworthr6

This weekend I installed hooker lt's and 3in back to magnaflow. Car runs like crap now. I have no rear o2's either. It runs real rough and hesitates when I give it gas. Plus the backfires are no fun either. Any direction or help

Shallow Bay

iTrader: (3)

https://ls1tech.com/forums/showthrea...ighlight=miles
https://ls1tech.com/forums/showthrea...header+install
https://ls1tech.com/forums/showthrea...header+install
https://ls1tech.com/forums/showthrea...header+install
https://ls1tech.com/forums/showthrea...header+install

rotwiler

iTrader: (1)

My car was great for about 2 days then ran like crap, backfired and stalled. Went on a dyno and used a wideband to check air/fuel and was really rich. Brought it up in normal range and gained around 30hp and all is good now. I would bet it is your A/F off.

fortworthr6

just went out there and noticed that the drivers o2 was loose. not even all the way in. could be it huh

Ericbigmac83

iTrader: (19)

lol, just might be. Funny how its often the little stuff

staringback05

iTrader: (8)

that could be the problem but you also could use a minor tune to adjust how the car is going to run now, because it will run different...some guys complain about richness or high end loss...etc etc...it wouldnt hurt either way

fortworthr6

well that didnt work so maybe a cracked plug

98Z28MASS

iTrader: (6)

check to make sure your plugs are tight enough and that all the plug wires are on. After my header install my plugs backed out on me a little and my car started running like ****.

fortworthr6

will do, yeah its funny cause i work for chevy and am completely new to the whole domestic thing. lol i update after work

wilddawg

make sure everything is tight and all the plugs are good and the wires are tight on the plugs then get a tune to correct for the slightly lean condition that headers bring to the table

fortworthr6

well found out that #5 plug was cracked really bad. changed it and fixed the problem. thanks for the help