Header install .. now misfire codes are thrown
 

wtf ... ?

I ran it some, enough to heat up the gaskets and water, for a little while. I was also enjoying the open header sound for a little bit, take off to drive and now it's missing like a SOB!

Any ideas ?

I haven't checked the wires yet, it seems like it's mostly bank2 being 2, 4, and 6 mainly with an occasional 8. The other side isn't worth mentioning.

Did you pull the plugs during the install? I bumped my plugs when I put my headers on my previous truck and had a bunch of misfires and blinking SES lights because of it. I replaced all the plugs and had no problems after that.

I didn't pull the plugs out, but I did pull the wires off. I'm going to the parts store tomorrow to pick up another set of NGK TR55's.

I don't wanna replace wires yet, but if I have to, it's going to wait until I get some Taylor wires in or something.

Still no rain here either ..

I cross-threaded a header bolt when I did the install too. It was a major PITa to get it in. it was the one in the very back on driver's side. After getting it half way in with a wrench I could finally get a socket on it and get all of 2 clicks at a time.

I may be putting heads on here sooner than I wanted to ... :bang: :bang: :bang:

heh, i crossthreaded the exact same bolt when i changed gaskets th second time..

No rain??? That sucks. It hasn't stopped raining here yet.

!#()$&!@#& RAIN!!!!! finally get the new motor in and now i can't drive it!!!

you dont have open headers now do you? my truck barely ran with open headers. the 02's must be too close to the opening.

hey parish, glad you mentioned that. i am about to install my ASM's and was considering dumps. what happened? what if i used dumps at the collector? does the A/F go way lean or what?

seems like you need the 02's 12" from the opening, i am not sure of that info so maybe someone else will chime in, you can put a dump right where the cat's are but i would put an extention on the dump or do whatever you have to to get far enuff away. i only drove the truck about 10 miles and the first couple were fine then it started missing, i think it went way rich but i am not sure

yea i heard like you needed like atleast 8" added on past the 02's.
but like parish i am not sure. i drove mine and it missed but it was cause the comp heeded tunning realy bed. you could not even get half throttle.