Burnt valve b/c of c/o's at collector?
01-08-2007, 02:22 AM
#1
TECH Veteran
Thread Starter
iTrader: (14)
Join Date: Apr 2005
Location: N. Falmouth MA
Posts: 4,085
Likes: 0
Received 0 Likes
on
0 Posts
Burnt valve b/c of c/o's at collector? I was told by my dumbass boss when I was deployed that a cut out at the collector will burn a valve... I'm ditching my cats this week in favor of dual cutouts at the collectors. -Just for the track or when I feel like making noise.. 
I take it he's full of it, but I figured I'd ask....
T/F???
I take it he's full of it, but I figured I'd ask....
T/F???
01-08-2007, 04:13 AM
#2
False. I have also heard people say that you can warp a rod. Now. I would not run open stock manifolds. I think that is way too close to the head, but off the collector of a long tube or through a catalytic converter you should be fine. However....kiss your O2 sensors good-freakin-bye! 
Trending Topics
01-08-2007, 01:58 PM
#8
TECH Veteran
Thread Starter
iTrader: (14)
Join Date: Apr 2005
Location: N. Falmouth MA
Posts: 4,085
Likes: 0
Received 0 Likes
on
0 Posts
I don't have emissions or inspections. My buddy got pulled over in his TA, had his cutouts uncorked, and the cop didn't say anything.
My question is, can I replace my cats w/ cutouts? In other words, can I run cutouts at the collector? I don't see any point at putting them anywhere except on the y-pipe cause I've got the Borla w/o a plate. -Pointless otherwise.
How would the o2's get a bad reading? Wouldn't that happen on an ORY?
My question is, can I replace my cats w/ cutouts? In other words, can I run cutouts at the collector? I don't see any point at putting them anywhere except on the y-pipe cause I've got the Borla w/o a plate. -Pointless otherwise.
How would the o2's get a bad reading? Wouldn't that happen on an ORY?
01-08-2007, 03:04 PM
#9
12 Second Club
iTrader: (6)
Join Date: Jun 2004
Location: Oklahoma
Posts: 519
Likes: 0
Received 0 Likes
on
0 Posts
the (front) o2s may get a bad reading if your cutout is too close to them because they won't heat up properly. If that cool air hits them they will get confused as fu*k
01-08-2007, 03:47 PM
#10
Originally Posted by bayer-z28
I don't have emissions or inspections. My buddy got pulled over in his TA, had his cutouts uncorked, and the cop didn't say anything.
My question is, can I replace my cats w/ cutouts? In other words, can I run cutouts at the collector? I don't see any point at putting them anywhere except on the y-pipe cause I've got the Borla w/o a plate. -Pointless otherwise.
How would the o2's get a bad reading? Wouldn't that happen on an ORY?
My question is, can I replace my cats w/ cutouts? In other words, can I run cutouts at the collector? I don't see any point at putting them anywhere except on the y-pipe cause I've got the Borla w/o a plate. -Pointless otherwise.
How would the o2's get a bad reading? Wouldn't that happen on an ORY?
01-08-2007, 04:48 PM
#13
TECH Senior Member
iTrader: (23)
Join Date: Aug 2005
Location: Watertown, NY
Posts: 8,797
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by MeentSS02
If the cutouts are too close to the oxygen sensors, they'll end up reading the oxygen from the ambient air in addition to what is coming out of the engine. That's what people are referring to...if it reads that oxygen, it'll dump more fuel to compensate for what it "thinks" is a lean condition. It would only happen at lower exhaust flow though (like idle, and maybe cruise). WOT wouldn't matter though since the O2 sensors are not referenced under those conditions.
01-08-2007, 04:51 PM
#14
Originally Posted by brad8266
Actually it would affect WOT because if it reads enough outside air to drive up LTFT's from say 0 to +6, it will then add 6% more fuel at WOT as well. So your WOT mixture would be richer too.
