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What tables do you need help with in the 3800 PCM?

Dyno Brian

Dyno Brian

New member
If you have any questions regarding what a table does in DHP, HPT, or Tiny Tuner. Post it here and I will be glad to answer it for you. :)
 


2011 Silverado 5.3, Burst knock retard tables. They seem too agressive and can be the cause of seeing more than normal amounts of KR, do you agree?

Or are you wanting questions regarding 3800's? :th_winking:
 
Fivefingerdeathpunch said:
2011 Silverado 5.3, Burst knock retard tables. They seem too agressive and can be the cause of seeing more than normal amounts of KR, do you agree?

Or are you wanting questions regarding 3800's? :th_winking:
Click to expand...

They are a bit aggressive. Increasing the voltage in which is needed for the pcm to register knock helps with this. Most pcm's are set right around 120 mv. I will turn the voltage up anywhere from 300 to 400 mv's depending on modifications to the car.

91parkave said:
^^^ burst knock air delta table...cut it down
Click to expand...

This works as well.
 


In the high and low octane spark tables, what determines which tables the car uses? a certain amount of knock?
 
Dyno Brian said:
If you have any questions regarding what a table does in DHP, HPT, or Tiny Tuner. Post it here and I will be glad to answer it for you. :)
Click to expand...

I got one for ya.
Is it part of a normal tuning procedure to troll youtube comments and sling derogatory and vulgar insults at the content creator?
Just wondering.
 
JoRoW99 said:
In the high and low octane spark tables, what determines which tables the car uses? a certain amount of knock?
Click to expand...

That is correct. Some pcm's will also use just the low octane table if the car is in reduced power or if there is a sensor failure. On LS engines if you unplugged the maf and force it into speed density all the time the car will run on the low octane table. Custom Operating Systems correct this with certain cars. A lot times tuners will copy the high octane into the low octane table so timing is repeatable. Obviously a good tune is important at this point to keep knock retard at a minimum.
 


Dyno Brian said:
Internet......

Making tough guys and know it all's since its beginning.
Click to expand...

So what you're saying is that since you're on the internet it makes you a tough guy.
Tough enough to sling insults and vulgarities at people who have nothing at all to do with you.

Am I on the right track?
 
Dyno Brian said:
That is correct. Some pcm's will also use just the low octane table if the car is in reduced power or if there is a sensor failure. On LS engines if you unplugged the maf and force it into speed density all the time the car will run on the low octane table. Custom Operating Systems correct this with certain cars. A lot times tuners will copy the high octane into the low octane table so timing is repeatable. Obviously a good tune is important at this point to keep knock retard at a minimum.
Click to expand...

"a good tune" is far less important than a good running motor.
 
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