Is it ok to run open header? Will I hurt anything??(longtubes)

BlueOvalStangGT

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Oct 27, 2003

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Tampa Florida....USF!!!

May 10, 2005

#1

• May 10, 2005

• #1

Shop closed early today without telling me so I am out of an x-pipe(getting 02 bung welded on) for today. I need a ride to school so I was thinking of takeing off my cat-back and just driving around open header for tonight. Is that ok or sohould I hitch a ride? They are longtubes to the 02s are right there at the end of the collector.

 

WhiteDevil

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Feb 4, 2003

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San Diego

May 10, 2005

#2

• May 10, 2005

• #2

Gonna be DAMN LOUD!!!!

 

zenboy99

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May 12, 2002

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Madison, WI

May 10, 2005

#3

• May 10, 2005

• #3

You will hurt your low-end torque pretty bad.

 

BlueOvalStangGT

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Oct 27, 2003

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Tampa Florida....USF!!!

May 10, 2005

#4

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Ahh all is well then! Hopefully my coworker will be there nad we can have a battle. He has a 02 SS and runs open 4" Ypipe everyday.

 

OinkAodeOink

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Jun 5, 2002

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Daytona bch, Florida

May 10, 2005

#5

• May 10, 2005

• #5

lol... Just be forwarned. its going to be loud as shi*! Hope your school isnt far..

 

B

Black70Fastback

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Dec 14, 2003

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Dyer, IN

May 10, 2005

#6

• May 10, 2005

• #6

are you saying the o2s are in the end of the header? then its fine. just freakin loud

as far as loss of low end. still havent convinced me. its velocity not back pressure that makes torque. also kinda irrelevant if you just asking if you can "get away" with it for a day or two.

 

Venom351R

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Apr 27, 2002

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MAINE

May 10, 2005

#7

• May 10, 2005

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Let us know how much the ticket is........

 

cavscout371

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Mar 30, 2005

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May 10, 2005

#8

• May 10, 2005

• #8

Why not try it? Plus it gives you a reason to do a big fat brake stand in the parking lot when you leave later in the day

 

zenboy99

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May 12, 2002

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Madison, WI

May 10, 2005

#9

• May 10, 2005

• #9

Black70Fastback said:

as far as loss of low end. still havent convinced me. its velocity not back pressure that makes torque. also kinda irrelevant if you just asking if you can "get away" with it for a day or two.

Click to expand...

Then you need to read up more. Ask any NMRA racer thats required to run full exhaust to the rear axle about his dyno graphs with open headers compared to full exhaust (Factory stock, Pure street, etc). There was also a 5.0 Mustang article on this as well, I'll look it up for you.

Also the older Trans AM series Mustangs that Tommy Kendal was racing went to smaller mufflers because the increased back pressure broadened their torque curve. I know because my Dad spoke with the crew chief.

 

J

Jeffyh

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May 7, 2004

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May 10, 2005

#10

• May 10, 2005

• #10

haha leave the c/b on.... check out my post for "HACKED BBK ORH + VIDS" I did some open header vids... Holy crap, my earwax fell loose.... No low end torque, but sounds real nice, lol

 

5

5.0snake

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Nov 12, 2004

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South Eastern PA

May 10, 2005

#11

• May 10, 2005

• #11

I went with an open mac catted H on my 94 cobra and holly F'ing $****....I did a few drive bys with my younger brother filming and my mom was walking the dog in the back yard and she wanted to choke me!! hahha...Ill see if I can post the vid

 

M

mackey

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Jan 25, 2003

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Beverly, Massachusetts

May 10, 2005

#12

• May 10, 2005

• #12

BlueOvalStangGT said:

Ahh all is well then! Hopefully my coworker will be there nad we can have a battle. He has a 02 SS and runs open 4" Ypipe everyday.

Click to expand...

He can without losing much power because of the compression of the LS1 Engine.

 

BlueOvalStangGT

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Oct 27, 2003

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Tampa Florida....USF!!!

May 10, 2005

#13

• May 10, 2005

• #13

God that was loud! Alot of people liked it though, I want my 3 chambers back!! Oh and I meant work not school, IM OFFICIALLY OUTTA HIGHSCHOOL SINCE LAST THURSDAY!!! I FEEL SO OLD!!

 

DFG 5OH

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Aug 28, 2004

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Louisville, KY

May 11, 2005

#14

• May 11, 2005

• #14

sounds good

 

G

GREYFOX4INCH

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May 8, 2005

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western MA

May 11, 2005

#15

• May 11, 2005

• #15

The Sound Is Gonna Make You Wanna Puke Lol , Its To Loud For More Then 10 Min Good Luck Ha Ha

 

302fordracer

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Mar 27, 2004

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Vancouver, WA

May 11, 2005

#16

• May 11, 2005

• #16

I drove my car about a mile and a half like this two weeks ago...didn't seem to hurt anything...but HOLY **** IT WAS LOUDDDDDDDDD!!!!!!!!! Sounded amazing though!

 

B

badingle

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Mar 18, 2002

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Portage, Michigan

May 11, 2005

#17

• May 11, 2005

• #17

I actually dynoed my car with open headers. It made 231rwhp. Then with the O/R H and catback made 297rwhp.

So yea, It makes a difference.

 

SorsCode

20+ Year Stangneter

Jun 10, 2003

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St. Louis, MO

May 11, 2005

#18

• May 11, 2005

• #18

my car made more horse with my Warlocks uncapped then they did capped...