Another #8 Cylinder Issue?? Need HELP
1st Gear Member
Joined: Feb 2010
Posts: 115
From: Baltimore
Not on the Coyote. This engine is equipped with wideband O2 sensors which adjust the pcm on their own. Call Bama or Brenspeed to verify. Since the #8 primary on the stock header unites with the #7 at almost a 90* angle a long tube may help #8 stay cooler by allowing the exhaust from that cylinder escape easier.
3rd Gear Member
Joined: Feb 2006
Posts: 558
From: Connecticut
Not on the Coyote. This engine is equipped with wideband O2 sensors which adjust the pcm on their own. Call Bama or Brenspeed to verify. Since the #8 primary on the stock header unites with the #7 at almost a 90* angle a long tube may help #8 stay cooler by allowing the exhaust from that cylinder escape easier.
1st Gear Member
Joined: Feb 2010
Posts: 115
From: Baltimore
You don't understand what factory wideband O2 sensors do. They adjust for that. Go back to the 3V section. You're living in the past.
Last edited by Rob72; Aug 19, 2012 at 04:52 PM.
3rd Gear Member
Joined: Feb 2006
Posts: 558
From: Connecticut
I know exactly what wide bands do. Never owned a 3v but thanks for the offer. Ask any tuner and they will say the same thing. A tune is needed.
1st Gear Member
Joined: Feb 2010
Posts: 115
From: Baltimore
I have. Doug @ Brenspeed was the last person that I spoke to about this. You don't need a tune for LTs on a car with factory widebands. They adjust automatically for the O2s being further down stream. 2010s and earlier do require a tune because they narrow band O2 sensors.
BTW WMS told me a while ago that no tune was required. And Evolution told someone on another forum the same thing.
You may have to run non foulers to prevent that code from popping up.
BTW WMS told me a while ago that no tune was required. And Evolution told someone on another forum the same thing.
You may have to run non foulers to prevent that code from popping up.
Last edited by Rob72; Aug 19, 2012 at 08:27 PM.
1st Gear Member
Joined: Mar 2013
Posts: 119
From: Indiana
I've got a 2013 GT with 800 miles on it. Looks like I made a bad choice. The car doesn't feel as fast as the other 2013's I test drove (maybe because they all had 3.73's) and I've been researching for what mods to do to make it a tad faster. Looks like I'm SOL.
I hate to be a chicken little, but I think I would've had more enjoyment and modding opportunity with a used C6 Vette. You can get them with low miles for $30k.
I hate to be a chicken little, but I think I would've had more enjoyment and modding opportunity with a used C6 Vette. You can get them with low miles for $30k.
Joined: Aug 2012
Posts: 7
From: New York
You'll be throwing codes from the rear O2 sensors and the front ones won't be calibrated for the lower temperature. It will be close and the car will run, but no guarantee on how well or how long.
Question about the #8 failure....what exactly happens when it fails? I know its detonation/knocking but does the car just quit? Every warning light on the dash go off and "limp" mode activates? Massive cloud of smoke? Just curious. I've seen pictures of the burned pistons and one with a collapsed piston/ring but I want to know a description of what you unfortunately experienced.
Question about the #8 failure....what exactly happens when it fails? I know its detonation/knocking but does the car just quit? Every warning light on the dash go off and "limp" mode activates? Massive cloud of smoke? Just curious. I've seen pictures of the burned pistons and one with a collapsed piston/ring but I want to know a description of what you unfortunately experienced.
What I don't know is if re-tuning to factory after the FIRST CEL would have prevented any damage...or if it was already too late.