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View Full Version : 8.1/alli fuel econimy



ilov2xlr8
December 27th, 2007, 02:19 PM
any one have any econimy tunes for an 01 8.1/alli?All new at this but learning,want to compare files.thanks

N0DIH
February 5th, 2008, 03:16 PM
I am going to be working on some for my 454 soon, not the same, but similar... Once I get going on it I will keep you posted....

N0DIH
February 25th, 2008, 07:47 AM
What do you get for fuel economy now?

ilov2xlr8
February 25th, 2008, 09:54 AM
What do you get for fuel economy now?
i am getting about 13.5 empty @65mph. not bad huh but I think it can be better.

ls197gmc
March 22nd, 2008, 09:23 AM
I have mileage/performance tune available for an 01' 8.1L.

N0DIH
March 22nd, 2008, 04:36 PM
I am getting around 12 flat with E85 highway @ 65mph. So I am guesstimating around 15 with gas. Mine's a 3.73 454 99 Sububran.

A friend of mine is picking up a 03 Avanlanche 2500 (8100 is only engine available in 2500), I'll be tuning it to see how well we can do.

Shupe
April 19th, 2008, 05:46 AM
I'd be interested to see your results with the 8.1

8100 Power
May 8th, 2008, 04:37 AM
Any update on this?

Im trying to learn to tune my 8.1 also..

N0DIH
May 8th, 2008, 07:16 AM
My friend just got a 8.1 Avalanche we have done some small things so far, will keep you posted as we get data on it.... If you don't hear from me in a while, reply to this post so I get the email...