break in period for tuning

[lummer911]

Hi, breaking in 2012 Sierra Crew 5.3. Have 500 miles and first oil change (syth).

How long does one wait to throw on a tune?

Gonna go with Diablosport 87 octane tune, firm shift and AFM(DOD) off.

 

Thanks, Mike

[txab]

Tune it now

[BlackZ71Silverado]

The sooner you get rid of the AFM, the better off you will be. There is no certain time period that you have to wait.

[Zembonez]

Get a Black Bear tune. You'll throw rocks at that Diablo. You can do it now.

[SouthCo]

I'd tune it as soon as your ready. Still follow manufacturer breakin routine... Whateve that is. Don't remember. Watched the show Trucks on Spike this weekend... They put a Diablo Trinity on a Dmax chase truck. The dash monitor part was kind of cool.

[6Sixathome]

Unleash the BBP tune! Your truck will come alive........Well have you ordered the AutoCal yet?, LOL

[kilbornf]

Be real carefull what tune you get.I got a BB tune and unless you burn premium fuel it does not change the performance much.I .have a 2011 5.3 Silverado.Iwould like someone on here to get a different tune and tell us what they think.Older trucks yes they improve a lot,but dont see it on the new ones.

[11Silvy]

I got mine tuned a week after I bought it. Then added headers, cai, magnaflow, and ls7 tb a month later. No issues, no problems, just smiles.

[Jennabear]

Be real carefull what tune you get.I got a BB tune and unless you burn premium fuel it does not change the performance much.I .have a 2011 5.3 Silverado.Iwould like someone on here to get a different tune and tell us what they think.Older trucks yes they improve a lot,but dont see it on the new ones.

 

 

 

With your engine, you should not run anything less than 89 on stock tuning either.

[BlackZ71Silverado]

So running 87 octane that is recommended is no good? Not being a smart ass, just would like to know proper fuel. Have been using 87 without issue since day 1.

Is 89 really that much better for the 5.3?

 

 

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[hodo78]

So running 87 octane that is recommended is no good? Not being a smart ass, just would like to know proper fuel. Have been using 87 without issue since day 1.

Is 89 really that much better for the 5.3?

 

 

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Also interested in this, as I have been running 87 octane in my stock tuned 2012 5.3 for the whole 7500mi since new with no known issues so far. Am I missing something?

[BlackZ71Silverado]

I would think that only the timing would be retarded to run the 87, if in fact it was designed for 89. Not sure on this though.

 

 

EDIT : This is from the owners manual, kind of leaves it wide open...

 

Gasoline OctaneFor all vehicles except those with the 6.2L V8 engine

 

(VIN Code 2), use regular unleaded gasoline with a

 

posted octane rating of 87 or higher. If the octane rating

 

is less than 87, an audible knocking noise, commonly

 

referred to as spark knock, might be heard when

 

driving. If this occurs, use a gasoline rated at 87 octane

 

or higher as soon as possible. If heavy knocking is

 

heard when using gasoline rated at 87 octane or higher,

 

the engine needs service.

[rfh1030]

Tuned mine at 800 miles. Blackbear is the way to go. Never heard of the octane thing. Justin even asked me what octane I was going to use and tuned it according to that.

[kdixer]

My 09 5.3 was getting significant spark knock when I ran 87, even with the factory tune.

[jdubub]

When Justin checked my post tune logs, he said that the 87 octane I was using was crappy. So I just fill up with 89 all of the time and the knock I had at times has disappeared.

 

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