Generation III Internal Engine 1997-2006 LS1 | LS6
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What h/c/i combo to go with

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Old 10-27-2008, 06:46 PM
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Should't I get the intake machined some? if my tb opening is 85 wouldnt I want the intake to be as close as possible?

As far as exhaust goes I just have to get an offroad Y pipe I already have headers and a catback. As far as getting an offroad y pipe though is there anyway to get one without cats but with the 02 openings for sensors so I wouldnt have the check engine light on all the time?
Old 10-27-2008, 06:54 PM
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Originally Posted by Pythias
Should't I get the intake machined some? if my tb opening is 85 wouldnt I want the intake to be as close as possible?

As far as exhaust goes I just have to get an offroad Y pipe I already have headers and a catback. As far as getting an offroad y pipe though is there anyway to get one without cats but with the 02 openings for sensors so I wouldnt have the check engine light on all the time?
Even with the rear bungs for the o2's you'll have to tune them out. the ses light will come on with no cats in place.
Old 10-27-2008, 06:56 PM
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Is there that big a difference then with or without the 02 sensors? any gas mileage difference? And any decent handheld programmer will be able to tune them out correct
Old 10-28-2008, 12:15 AM
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Originally Posted by Pythias
Is there that big a difference then with or without the 02 sensors? any gas mileage difference? And any decent handheld programmer will be able to tune them out correct
dont take them out until you are ready to tune them out....

it would be a waste of money on porting an ls6 intake.... you cant really port them..
Old 10-28-2008, 12:42 AM
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you can get about 400+ with cam and all supporting mods....with heads i would go with Trickflow and you will be cruising 450+....
Old 10-28-2008, 11:25 AM
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Thanks for all the input guys, I think I have enough info now to do what I want I appreciate it.




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