Fuel mileage?

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Feb 19, 2005 | 01:29 AM

#31

Monsta

Sit. Stay.

Joined: Oct 2001

Posts: 18,308

Likes: 20

From: Washington State

Quote:

Originally Posted by phastalon

Has anybody tested different octanes to see if there's an improvement by using 91 or 93 octane?

I have. I noticed no difference with either mileage or performance.

Feb 19, 2005 | 07:05 AM

#32

1owner

Freshman User

Joined: Aug 2004

Posts: 42

Likes: 0

I've got a '00 EB w/5.4. Went camping last weekend pulling my popup tent trailer [2200#]. I got 15.7 @ 70 mph. This was calculated, the mileage shown by the truck was 15.5. Only thing i have done [other than maintenance] is reprogram the ecm with the Predator.