Speed Density tuning?
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From: Lake Jackson,TX
Speed Density tuning? What are your thoughts on speed density tuning. Getting my new motor tuned monday at G-Force. Will it gain me more power and driveability? Tell me your thoughts guys. Thanks!
I'd like to know this as well. I've heard everything from "its just as driveable as a MAF tune" to "you don't want SD unless its a track only car". Then I've heard everything from "you'll only gain about 5 hp" to "SD tuning is da bomb". I honestly don't know what to believe.
It does seem that the cars putting down the highest numbers are using SD.
It does seem that the cars putting down the highest numbers are using SD.
Originally Posted by edcmat-l1
Yes...
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I tuned my car both with MAF and SD no peak power difference at all. Drive-ability on the street SD was much better with my combo. In your case I would say that your best bet would to go with a SD tune for drive-ability purposes.
Originally Posted by gametech
SD However, most FI cars max the maf, so they DO need SD.
Not so, Mine, Supercharged, stock MAF, 648 RWHP Pump Gas, 722 RWHP Fast Gas, No Problems. Everyday driver!
Originally Posted by Doc
Sorry, but that's an excuse in my book. A real time tuning solution will reveal the true sampling nature of the GM PCM architecture and allow a competent tuner to take advantage of the situation.
The question was would it HELP. not IS IT REQUIRED.
AS far as FI. Again, SD HELPS. BUT, again ITS NOT REQUIRED. What was everybody doing before the 2 bar craze? Skewin the MAF, and loadin up the PE.
And again ,I'll say, its not required. For most the diff would be nil.
And really, there was SD before MAF anyway. All the stand alones are SD.
Do you advocate MAF tuning solely?
Originally Posted by moehorsepower
Not so, Mine, Supercharged, stock MAF, 648 RWHP Pump Gas, 722 RWHP Fast Gas, No Problems. Everyday driver!
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Originally Posted by moehorsepower
Not so, Mine, Supercharged, stock MAF, 648 RWHP Pump Gas, 722 RWHP Fast Gas, No Problems. Everyday driver!
You could just be fueling off the PE table at the max airflow your maf reads.
Show us the logs with nice airflow readings from the maf then we will believe you
Otherwise Id tend to agree your maf isnt doing the fueling anymore, you are running off other tables!
Originally Posted by ringram
How do you know you havnt max'd the maf out anyway dude?
You could just be fueling off the PE table at the max airflow your maf reads.
Show us the logs with nice airflow readings from the maf then we will believe you
Otherwise Id tend to agree your maf isnt doing the fueling anymore, you are running off other tables!
You could just be fueling off the PE table at the max airflow your maf reads.
Show us the logs with nice airflow readings from the maf then we will believe you
Otherwise Id tend to agree your maf isnt doing the fueling anymore, you are running off other tables!
Originally Posted by moehorsepower
What do you think the PE table is for? Exactly what it stands for , Power Enrichment. my fuel curve is flat as a board...I really don't care if you or anyone else believes me or not. I know my tune, my fueling is spot on and every other FI car I have tuned are the same..