Put a iso thermal plenum spacer in now i get worse gas milage???? - Page 2 - G35Driver

Dec 10, 2010 | 10:59 PM

#16

thescreensavers

Mr.202?

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From: WPB

Quote:

Originally Posted by LightsOut

more air equals more fuel

only thing you have to do is lay off the pedal.

This

Dec 11, 2010 | 12:32 PM

#17

amkaluta

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REALLY 16 and 20 thats not good!!! I was geting about 22 to 23 average before my plenum... I got 25mpg on a road trip before and that was crusing at 70mph to 75mph. NO way i can get that now.

Dec 11, 2010 | 05:16 PM

#18

Tollboothwilley

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From: Vegas

Winter gas sucks - normally drops 2-3 MPG just from the winter fuel mix ratios. Happens to me every winter. I go from 19-20 mpg around town and drop to 17-18.

The plenum spacer will not decrease your fuel consumption if you are driving conservatively.

Dec 11, 2010 | 05:31 PM

#19

bulletproofpat

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I would say it's probably your driving style or you might be running a little rich. You should try resetting your ECU.

Dec 12, 2010 | 02:08 PM

#20

amkaluta

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I thought after the plenum if anything you should be running lean?
How you reset it?

Dec 12, 2010 | 06:48 PM

#21

grovefromnh

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From: Epping NH

Write down your radio presets. Disconnect your battery (neg terminal) for about 10 min. , Reconnect. Start car; reenter your presets, go for a quick drive. Enjoy!