General Racing/Tech General talk about Racing or help setting up your car

Exhaust cut outs leave capped or uncapped?

Thread Tools
 
Search this Thread
 
  #1  
Old 04-12-2007, 08:03 PM
coolcat's Avatar
1st Gear Member
Thread Starter
Join Date: Apr 2006
Location: El Paso, Texas
Posts: 144
Default Exhaust cut outs leave capped or uncapped?

I don't know if anybody remembers me from a while back, i see alot of new members of the forums, good to see it growing.Quick question, I have exhaust cut outs right after my headers so i can wake up the neighbors at night if I wish, would running the car uncapped in the quarter mile help out with a litle more qicker times. I also see alot of guys running with out air cleaners in hopes of better times as well (also seen alot of break downs when stuff gets sucked into the carb). What do you all novice racers suggest???
 
  #2  
Old 04-12-2007, 09:56 PM
z28pete's Avatar
Tech Droid
Join Date: Aug 2005
Location: North East PA
Posts: 9,215
Default RE: Exhaust cut outs leave capped or uncapped?

Try the exhaust both ways, & see which is best, each reacts a little different. It's not going to hurt anything except your ear drums. Open intake is not a good idea, at least put on a screen to keep the pebbles and bugs out.
 
  #3  
Old 04-12-2007, 10:04 PM
badinfluenceRS's Avatar
4th Gear Member
Join Date: Dec 2006
Location:
Posts: 1,702
Default RE: Exhaust cut outs leave capped or uncapped?

I wouldn't leave the air filter off on my car...

I hear cutouts are better a little farther back in the exhaust as well...
 
  #4  
Old 04-12-2007, 10:06 PM
74454bb's Avatar
May 2007 ROTM
Join Date: Aug 2006
Location: Pgh Pa.
Posts: 2,714
Default RE: Exhaust cut outs leave capped or uncapped?

Z28 pete said it best, there is no other smart way of doing it, get a K&N or holley powershot filter.
 
  #5  
Old 04-14-2007, 11:50 PM
nzink's Avatar
1st Gear Member
Join Date: Jan 2007
Location:
Posts: 159
Default RE: Exhaust cut outs leave capped or uncapped?

yes uncap the exhaust, it should definately help, but take it to the track and try it both ways. Also, my car doesnt matter if the air cleaner in on or off. I run an open elemnt K&N.
 
  #6  
Old 04-15-2007, 09:07 PM
microkid's Avatar
March 2011 ROTM
Technical User
ROTM Winner's Club
Join Date: Oct 2006
Location: Biglerville, PA
Posts: 2,615
Default RE: Exhaust cut outs leave capped or uncapped?

neighbor of mine has a le baron full tube race car. he said its only a .1 second difference with or without an air filter.
 
  #7  
Old 04-15-2007, 10:30 PM
nzink's Avatar
1st Gear Member
Join Date: Jan 2007
Location:
Posts: 159
Default RE: Exhaust cut outs leave capped or uncapped?

yeah thats about the same difference i noticed an air filter made, not worth the risk if you ask me.
 
  #8  
Old 04-16-2007, 05:10 PM
coolcat's Avatar
1st Gear Member
Thread Starter
Join Date: Apr 2006
Location: El Paso, Texas
Posts: 144
Default RE: Exhaust cut outs leave capped or uncapped?

thanks for advice guys I will try runningcapped and uncapped to see the difference. I will be sure to let you all know the results
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mgg4591
Wheels, Tires and other Exterior
5
11-27-2011 10:21 PM
mitchell
Intake, Headers, and Exhaust
1
03-10-2010 06:49 PM
bryan0609
82-92 General
4
02-26-2010 06:56 PM
mattvogt
Intake, Headers, and Exhaust
17
05-11-2006 08:56 AM



Quick Reply: Exhaust cut outs leave capped or uncapped?



All times are GMT -5. The time now is 05:08 PM.