4 degree retard...not a good thing? You should see how they run with a
Supercharger or Nitrous after the PCM flash. ;)
The T'Stat and Plugs semm to help out a bit though.
- Bernd
> That flash basically retarded your timing by about 4º. Not a good thing but
> that's what DC is doing to correct the pinging problem. Your speed limiter
> may have been changed to 95 as well. There are remedies for this because
> but they can be expensive. Re-programming your PCM can be done to make it
> perform better but the cost will be ~$500. When you do that, the speed
> limiter will be set to 254. Even if you could go that fast your rev limiter
> will stop you long before that. Your pinging will probably return. You
> will need to use premium gas (92+ octane). You may or may not need to:
>
> 1) change to a cooler t-stat (180º)
> 2) change to a colder plug (Autolite 3923's)
>
> Before I had my PCM re-flashed (a little late now, I'm afraid), I would
> have done those things along with a different intake, TB, and exhaust
> system. Your engine needs to breathe, especially in Colorado, where the air
> is thinner (assume you live at a high altitude).
>
> Ron
> 00 SLT QC 4X2 5.9 46RE 3.92 LSD
> For modifications see my DML Profile
>
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