LT1 Backfires After Header Swap
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From: Cornfields near Pontiac, IL
LT1 Backfires After Header Swap Switched from mids to longtubes and got everything hooked back up, running open headers btw, car started right up, ran but every 5-10 seconds the exhaust pops and shoots a flame out of the headers. I started it once, did it a couple times, shut the car off, checked everything, started it again, ran it for about a minute, no pops or backfires, shut it off, then i started it back up again and it started backfiring again.
I ran the car without the cold air intake and the air temp sensor wasnt plugged in but the MAF was hooked up. Also didnt have the O2 sensors hooked up since the headers didnt come drilled for them. Was thinking that would have been it, but i cant imagine the car going into closed loop immediatly since O2s only read in close loop right?
Any ideas?
I ran the car without the cold air intake and the air temp sensor wasnt plugged in but the MAF was hooked up. Also didnt have the O2 sensors hooked up since the headers didnt come drilled for them. Was thinking that would have been it, but i cant imagine the car going into closed loop immediatly since O2s only read in close loop right?
Any ideas?
With open headers, (no tune?) and no o2's, it's likely that you are running really rich, hence the backfires out the exhaust. To be certain though, I'd check to see that you have the wires hooked up correctly and no wires are touching or arcing to the headers.
Thread Starter
TECH Fanatic
iTrader: (12)
Joined: Aug 2007
Posts: 1,818
Likes: 1
From: Cornfields near Pontiac, IL
Didnt touch the opti, im pretty sure the wires are run right, but have mixed them up before, so ill double check.
I dont have a tune, but do i need one for just bolt ons right now?
I dont have a tune, but do i need one for just bolt ons right now?
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