More power after break-in?

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Mar 10, 2007 | 09:17 AM

#31

plessm

Registered User

Joined: Oct 2006

Posts: 132

Likes: 3

From: Modesto, CA

Quote:

Originally Posted by ROOSTER108BM

Yes its true.Youll even see a fuel mileage increase. If your not pulling a trailer run it hard and it will make it break in faster. Run it hard and around 12k to 13k you will see a considerable mpg increase which should also give more power.

Also,for trucks with 48re trans,the tranny will teach itself how you normely like to drive. Meaning if you baby it trying to get better mileage,or dont tow a trailer thats how your trans will adjust itself to your style. My truck will spin the tires because I usually dont baby it. But at one plant that is 60 miles one way I drive for mpg, after a week of that I cant hardly get it break the tires loose

Can you explain more about this 48re teaching itself? I didn't see anything about that in my owner's manual and this is the first I've read of this on this site. I remember once when I had around 1000 miles on the odo, I got on it across an intersection and the tires were struggling for traction the whole way across. Now, 2000 miles later under the same conditions, it won't come close to chirping the tires, ever. It feels a lot different now even to the point that I called the dealer and questioned them about flashing my ECM while it was in for some minor warranty work for a rattle.

Mar 10, 2007 | 09:24 AM

#32

Danderson

Registered User

Joined: Jan 2006

Posts: 3,443

Likes: 39

From: San Diego

"07" software.

My '07 stock is much quicker than my stock '99 was. That being said,however,the software on these '07's seems to be what's holding them back. The aftermarket performance enhancers seem to correct this,but Smarty claims to be undetectable. I'm going to get one after truck has 6-8 K on it..