Bad Gas milage after headers
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
did anyone else's gas milage get worse after installing thier longtubes??? Its seem like mine did. I dont have my rear O2's could this be it???
Thanks,
Jake
Thanks,
Jake
#2
TECH Enthusiast
Join Date: Jan 2006
Location: Des Moines, IA
Posts: 616
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Did you get them tuned out? if not and its throwing an SES, not only is performence going to be affected but it will just toss fuel in them cylinders. If you did get them tuned, maybe you just running it a little harder then before?
#4
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
no I still havent thrown a code and it runs great. It just seems like its using a little more. Maybe its just me I guess. You guys have any links to these tunes that I can look at.
Thanks,
Jake
Thanks,
Jake
Trending Topics
#8
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
its got a sound similar to this vette NO LIE ...but not near as fast and takes longer to rev of course. anyway ill get a clip soon as I can get my friends camera. The vid is worth watching its a crazy fast vette.
http://www.youtube.com/watch?v=NliTP...eature=related
http://www.youtube.com/watch?v=NliTP...eature=related
#9
12 Second Club
iTrader: (19)
Join Date: Apr 2006
Location: Green Bay, Wisconsin
Posts: 1,160
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
performance is NOT hurt by removing the rear 02 sensors! rear 02's are only emission related. they are there only to turn on the ses light when the cats have failed or dont exist.
#10
TECH Senior Member
iTrader: (11)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
its got a sound similar to this vette NO LIE ...but not near as fast and takes longer to rev of course. anyway ill get a clip soon as I can get my friends camera. The vid is worth watching its a crazy fast vette.
http://www.youtube.com/watch?v=NliTP...eature=related
http://www.youtube.com/watch?v=NliTP...eature=related
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
#11
Moderator
iTrader: (4)
Join Date: Nov 2003
Location: Plainfield, CT
Posts: 10,520
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Headers will improve milage. You do need a tune. If you are throwing a code, this will throw the computer into a safe mode. This retards the timming and adds extra fuel to prevent damage. Rear O2's need to be deleted from the computer or O2 sims need to be used.
#13
10 Second Club
iTrader: (24)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Your front o2's may be toast, if your headers were new and coated, sometimes the loose coating collects on the o2's as it gets blown out and ruins them. I would check those, you'll probably get a code soon.
Rear O2's have doing to do with fuel, they only throw a code, nothing else.
Rear O2's have doing to do with fuel, they only throw a code, nothing else.