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MPG after LS6 install

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Old 10-06-2011, 01:22 PM
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Default MPG after LS6 install

I noticed after my LS6 intake install my gas is being used more than before. Is this normal or should i replace something or get it tuned.
Old 10-06-2011, 01:48 PM
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I am sure it needs a tune. How many MPG's did it drop?
Old 10-06-2011, 02:14 PM
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i dont know really, but when i turn the car off and then go abck to it later on the needle will be at a lower position than before.
Old 10-06-2011, 02:38 PM
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^^are you parked on a hill? mine moves a ton depending on the road grade
Old 10-06-2011, 02:57 PM
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i dont know really, but when i turn the car off and then go abck to it later on the needle will be at a lower position than before
So you think the ls6 intake is burning extra gas while the car is off?

If that's your only explanation to seeing an mpg decrease then you need to go back and figure some things out.
Old 10-06-2011, 03:01 PM
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Deleting EGR will add pumping losses at cruise. Did this attend
the swap?
Old 10-06-2011, 03:01 PM
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^lmao redtan
Old 10-06-2011, 03:58 PM
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Originally Posted by jimmyblue
Deleting EGR will add pumping losses at cruise. Did this attend
the swap?
explain please?
Old 10-06-2011, 05:51 PM
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i havnt had an EGR for a about a year now, but idk it just seems to use more fuel than before. Im going to replace the O2 sensors and see if anything changes.
Old 10-06-2011, 05:51 PM
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ill even replace the fuel filter
Old 10-06-2011, 05:54 PM
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Oh and also everytime i start teh car it has a funny smell to it, IDK the smells of too Rich or too Lean
Old 10-06-2011, 07:56 PM
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Get a tune!!!
Old 10-06-2011, 07:58 PM
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I Z06'd my LS1 and deleted the EGR and my mpg on the highway is 25. Yes that's gearhead code. lol lol.
Old 10-07-2011, 11:38 AM
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Originally Posted by omarrakeen
explain please?
At low MAP you do work pulling air into the intake. EGR
bypasses the throttle with inert (exhaust) gas and raises
MAP, decreasing the throttle pressure drop / pumping
loss.




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