This is using a T1000 by the way.

I've been suspecting a problem with at least my TCM if not PCM were not restored properly. On more than one occasion the Trinity said that one module was not able to update (or something to that effect). And when I set my setup back to stock the shift points were still modified from a previous ...

mikel wrote:No VVT adjustments in the GM 5.3 canned tunes currently.

Thank you for clarifying. Much appreciated!

I have a 2013 LMG 5.3L (VVT & AFM). Was wondering if the canned tunes make adjustment to the VVT tables, or if that's something that could further be optimized via a custom tune to gain more torque.

Lack of catalysts most likely sent the PCM into limp home mode. It's looking for a certain value from the 2ndary O2s it's not getting now. Can't tune around that with a hand-held. You need a custom tune.

If so how does the adaptation work when running a mix of Gas and E85?


Sounds like he is trying to do flex fuel.

Also, it is possible to have a non-E85 compatible pump, where the copper disintegrates from corrosion, and the contamination can ruin the injectors. If the lines aren't stainless ...

Also requires larger injectors.

1- does the tuner have to stay attached to the truck once I have installed a tune? Or can I install said tune then put the tuner back in my house for security?

When you install a tune, you're flashing the pcm memory with the new settings. So the short answer is, no, it can be removed once the ...

if you log and the intake air temp is in the 90's, you want your AVERAGE ltft's to be around -3.xx's usually...

in the mid to upper 80's, you want them around -2.xx's...

70-low 80's, about 0.xx to 1.xx...

So when you say intake air temp, I should be going by the IAT temp on the Trinity, not ...

Not to hijack, but what temperature should we be targeting for ltfts?

It's been high 90s here, so I've been logging in the evening when it's in the low 90s. Average summer high in mid-July is 90. Should I wait for it to cool back into the 80s, or allow a slightly richer ltft value?

oh , BTL ...I FORGOT , I do own 08 gmc sierra with 6.0 ltr and Banks ram jet cai , great tone , not like k&n cia ...get great air flow, def perf gains , ill see how my new high flow cats and BORLA cat=back will work with it this sat ...getting dyno before change and dyno after THEN install trinity ...

if trims went richer, usually indicates less airflow, if all other operating parameters were the same (fuel, weather, intake air temp, etc)

That's what I thought, which is why I was confused. Guess I'll either go with the a factory filter replacement, or K&N filter next time, instead of a Fram ...

Installed a new replacement filter for my 2013 5.3L truck. I had about 20k on the stock original, and even though it said I could go longer according to the manual, I thought I'd put in a new one as part of my last dialing in the tune before moving on to WOT. The new one is a Fram Extra Guard ...

hey guys i have a 2009 avalnche with the 5.3l 325 LMG motor.
i have installed the diablotune. shut off DOD. shut off top speed limiter and selected the firm shift for tranny.
i have been using 93 octane and it has been a little over 2 weeks of driving now when im in park or at a red light the truck ...

Mike_Levy wrote:2GB should work. Its gotten really hard to find 2GB standard SD cards at a price they're worth. Usually you see micro SDs or SDHC or they cost way more than they should.

Yeah, and they seem to be the minimum available too.

Just to close the loop, the 2GB worked just fine, thanks.