Vac lines
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On The Tree
Joined: Oct 2010
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Vac lines Just finished my LT header install on my 97TA. I deleted the emissions and going to do the EGR delete to. Before i go crazy and start removing lines, i would like to know witch vac lines that i can delete on the sides of the intake? Anyone have any pics showing witch lines can be deleted? also, i know there are three fuel lines and one is just a breather, can i delete that lines also? Thanks for the help
There is no "breather" of any sort on an LT1. All lines that you want to remove have some degree of consequence.
Deleting the PCV system is NOT recommended, so you need to maintain the PCV valve and it's corresponding hose(s).
Deleting the EVAP purge solenoid requires PCM reprogramming and will increase the amount of fuel smell at the rear of the vehicle.
Deleting the EGR will require PCM reprogramming and will require the use of block-off plates where the solenoid and the tube were located (both on the intake manifold and the exhaust manifold).
The line for the fuel pressure regulator must be retained as well - that modulates fuel pressure with manifold vacuum.
The other line on the passenger side controls your flapper door and AC/heat functions.
For further diagrams and explanations, check out www.shbox.com
Deleting the PCV system is NOT recommended, so you need to maintain the PCV valve and it's corresponding hose(s).
Deleting the EVAP purge solenoid requires PCM reprogramming and will increase the amount of fuel smell at the rear of the vehicle.
Deleting the EGR will require PCM reprogramming and will require the use of block-off plates where the solenoid and the tube were located (both on the intake manifold and the exhaust manifold).
The line for the fuel pressure regulator must be retained as well - that modulates fuel pressure with manifold vacuum.
The other line on the passenger side controls your flapper door and AC/heat functions.
For further diagrams and explanations, check out www.shbox.com
