Timing tables with canned or custom tunes

[Mike'sLS3]

I have a 2008 LS3 manual corvette with Diablew tune. The oem tune has two timing tables low and high (or normal) in which they revert to the low table when significant K.R. is present. On the Diablo sport tunes and Diablew custom tunes, are there two or one timing table?

The reason my question is that with the oem tune, I experienced K.R. and the performance declined when in the lower timing tables. Lew did a great job on a custom tune and I no longer have K.R. issues. The performance is very consistent, unlike with the oem tune. However, I was just wondering if there are two timing tables with either the Diablo canned tunes or Diablew custom tunes?


Thanks for your responses.

Hope all is well with you Lew!

[mikel]

the software used does not determine what tables are available, they all live in the pcm. Once they are properly calibrated, as you see, knock is a thing of the past

[Mike'sLS3]

Thanks for the reply Mikel.

So are you saying that the tables exist, however once properly tuned one should not see the lower values.

I run 91 octane (CA highest), if I were to put in 87 octane (not that I would) and experience significant K.R. the ECM or PCM would use the lower timing values no matter what tune is installed.

[mikel]

Thats a good question for Lew if he made the tune

[06MonteSS]

yes, as mentioned, a high octane and low octane timing tables are still in the tune file...

if you for whatever reason were to put 87 octane in that car and get knock bad enough, yes it will still switch to lower octane table if needed...