2009 sierra 5.3l any recommendations for tune with predator?

[thunderwolfx]

i have a predator u7194 not sure which revision i'll have to check, I know that I have to update to the 09 update yet. i have a 09 gmc sierra 5.3L with dynomax cat back duals and an air raid CAI and a poweraid throttle body spacer. I run 87 octane as 91 plus can be hard to find. what tune do I run I tried 87 Octane tune and gained 3 - 4 MPG and some noticeable power. Tried Diablo tune and mileage was close to the same but way more bottom end. my truck is flex fuel and 6 speed transmission. Any recommendations? Any other things to do when having these mods?

[06MonteSS]

if you only use 87 octane gas in the truck, then use the 87 octane tune...

you don't want to use the diablo tune - that tune is made for 91/93 octane gas and it has the timing/spark advance set a lot higher and will cause knock when you get on it...

[thunderwolfx]

ok so what is the advantage to turning off the dod? also what can i expect from the new 6 speed update and when i update do i have to update everyone in order or just straight to the new update? mine says V9.01? Thanks

[06MonteSS]

turning off the DOD will make it stay in 8 cyl. mode all the time, and a lot of people have found that they actually gain some mileage with it disabled....

all depends on if you do a LOT of highway driving or not...

predators will not be getting any update for tcm/tranny support... they are limited by their amount of memory and storage space...

when tcm/tranny support is finally done and available, it will be an update for the Trinity and new inTune programmer...

[thunderwolfx]

so the dod off helps mileage if mostly highway or mostly off highway and does it do anything for performance with it turned off?

[CANUCKPREDATOR]

off highway it helps, on highway its gotta be pretty flat to see any real benefit

[thunderwolfx]

also updated predator from v9r10 to v9r18t and tried to update to v9r21 and predator says can't downgrade from v9r16 to v9r21. what do i do?

[mikel]

also updated predator from v9r10 to v9r18t and tried to update to v9r21 and predator says can't downgrade from v9r16 to v9r21. what do i do?

Load this, then 9r21.

[thunderwolfx]

so if you drive back roads all week like gravel etc where your speed varies it should help with the dod off ? i drive 50% gravel 30% highway and the rest town during the week. weekends are pretty much all highway what would you recommend on or off?

[06MonteSS]

if that was my driving scenario, I'd turn it off...

[thunderwolfx]

ok so i went to install the two updates and neither of them show up when i try to send them to the tool yet when i check where i saved them they are still there ???

[thunderwolfx]

nevermind i got it

[gundog]

I disabled the DOD in my 2007 Yukon and have not noticed any difference in my gas mileage. I do feel more comfortable with it disabled as it should will benefit the longevity of the engine, no valves constantly collapsing then reactivating while switching back and forth from 4 to 8 cyl. operation and no chance for brief temperature change in the affected cylinders or parts while deactivated then reactivated, even if for a very brief amount of time.