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Got my headers... install question

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Old Apr 14, 2008 | 06:17 PM
  #1  
capn kirk's Avatar
capn kirk
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Got my headers... install question

its about the air pump system,

when i install the new system, can i just leave the tubes disconnected where they used to connect to the old manifolds and im planning on doing a 3 inch pipe from the y to a cat to muffler then out the side in front of the right rear tire, maybe dual sides.

but same question goes for the tube that connects to the cat, and im having a hard time finding a high flow for the 460 i need to pass emissions a friend of mine said just leave the air tubes disconnected and use 2 high flow cats for up to 5.9 motors the common ones and it wont have alot of back pressure and i will pass emmissions no problem

any suggestions, will this work

thanks yall
 
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Old Apr 14, 2008 | 07:19 PM
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Yes let em hang

JR
 
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Old Apr 14, 2008 | 09:41 PM
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any comment on runnin 2 cats that handle up to a 5.9 to keep a 7.5L passin emmissions
 
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Old Apr 14, 2008 | 09:43 PM
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That's your perrogative....I live in a non inspection state...so I chop em off.....

JR
 
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Old Apr 14, 2008 | 09:51 PM
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There are lots of 3" high flow cats available, Magnaflow has some..
 
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Old Apr 14, 2008 | 09:56 PM
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Just run true duals and have 2 cats. I got a 5.8 with the air tubes in the manifolds and I removed all of it, all thats left is the air pump as an idler pulley.
 
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Old Apr 15, 2008 | 10:42 AM
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does the check engine light come on when you dump the air tubes, and 350 a bought a kit that comes with all piping to the y pipe, i thought about true duals not 100% sure why i didnt go with it
 
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Old Apr 15, 2008 | 11:03 AM
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Originally Posted by capn kirk
does the check engine light come on when you dump the air tubes,
No, just make sure you cap any vacuum lines in the system and any other places the air tubes connect to the motor. In other words don't just disconnect 1 end and let it hang, remove it all and plug all the holes.
 
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Old Apr 15, 2008 | 05:33 PM
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Paul that's not entirely true.....I plugged off all my vacuum solenoids and my truck throws a cel every time i drive it.

JR
 
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Old Apr 15, 2008 | 08:43 PM
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the smog pump will help if you plumb it in somewhere pre-cat. the cat can't help you if you are running too rich, without extra air.
 
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Old Apr 15, 2008 | 09:26 PM
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In a perfect world since his vehicle is computer controlled it should NOT be running rich except for the few moments before it completely warms up to temp.But this isn't a oerfect world and parts get worn out...good call stromni.

JR
 
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Old Apr 15, 2008 | 09:35 PM
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Originally Posted by flareside_thunder
Paul that's not entirely true.....I plugged off all my vacuum solenoids and my truck throws a cel every time i drive it.

JR
What codes do you get?
 
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Old Apr 15, 2008 | 10:23 PM
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capn, shoot Bear River Converters an email, or PM..He answers fast, and he told me he could set me up for my 460 pretty reasonable.. I'm just waiting on the time and extra cash to get a Banks setup for mine, then I'll order my cat from him, and do it all at once.
 
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Old Apr 16, 2008 | 06:02 PM
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I haven't gotten a chance to pull them yet....I'm gonna get with my buddy who has a plug in reader real soon though...truck did not throw codes till i eliminated everything.

JR
 
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Old Apr 16, 2008 | 07:54 PM
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How did u do ur egr? Maybe its the valve, as I get no codes and all of mine is gone, i left the egr and just capped the pipe that goes 2 it. So all it does is open and close.
 
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