I just read that the Autocal tuner is out now so Black Bear can provide custom tuning with the at home convenience of a handheld unit. And it will have TCM support, even on the 6l80e. Superchips tuners also have TCM support, even on the 6l80e.

I would dare say a very small percentage of U7194 owners have the 6 speed. Most of them have the 4l60e which does have a removable TCM so what is the argument there? Blackbear can also provide a data cable tune which will talk to the TCM.

The Superchips tuners even support the 6l80e so what's the ...

I did sell it. That is just something I was curious about. That was the most noticable benefit of the predator was the throttle lag.

Do the diablo tunes alter the electronic throttle control tables?

SOLD

LOL

Would you run 87 octane fuel with the diablo tune as long as you are not getting KR...?

Are you messing with me...LOL?

I am running 87 octane fuel with the diablo tune just to be perfectly clear.

This whole topic is about using the Diablo Tune with 87 octane gas. I have stated several times that the timing in both the diablo (or premium gas) tune and the 87 tune have less spark advance than the factory tune. My main question is why run premium gas when there is no TKR.

I have read that ...

Here is my latest log. It is the diablo tune, -1° in all rpm ranges, LTF's adjusted -3%, burning 87 octane no additives @ 2,000 feet above sea level 46°F.

I was careful when choosing my words. The stock tuning does not benefit from using premium fuel. There are very few vehicles that are designed from the factory to re-tune the engine for premium fuel. I never said to use premium fuel with the 87 octane tune. I was referring to your claim that the ...

Concoursd,

I have studied on exactly what you are saying. And this all started by not "feeling" any performance gain with the 87 octane tune. And that is why I purchased this tuner in the first place, to actually feel a difference.

I guess my thinking is that if I am experiencing TKR then it will ...

just because you logged more knock retard in one data run vs another means nothing. so many things affect the spark numbers your vehicle chooses to run.

chemically retard? ... i don't follow...octane is a rating of resistance to detonation nothing else

Trust me, I have logged and compared plenty ...

haha.... it tweaks/adjusts a LOT of parameters, not just timing....

and yes, the only real difference between the 87 tune and the diablo/93 tune is the amount of timing/spark advance...

how much?? dunno.. would have to compare your 87 tune and diablo tune, tune files...

and the tunes ARE ...

concoursd wrote:you may have been getting KR and that is why the timing was reduced below stock.

Is it possible to be getting KR without it showing up in the TKR when you log?

I juat thought it was odd that the 87 tune had less timing than my stock tune.

I ran multiple logs with the 87 tune and it was consistantly 1.5° lower than the factory timing. So I reinstalled the 87 tune with the timing advanced another 1.5°. I even compared them on the same day with the same results.

I have always compared WOT logs so I was not sure if part throttle ...

Is there a difference in part throttle timing between the 87 tune and diablo tune?

When I ran the 87 tune it was a consistent 1.5° to 2° less spark advance than the stock tune on the logs I ran. I compared the spark advance at intervals of 1000, 1500, 2000, 2500 rpm etc...... I have not compared ...