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Old 06-17-2009, 11:25 PM   #1
Drivinwest
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Join Date: Jun 2003
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Location: Houston, Texas
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2005 Saab 9-2X Aero
Satin Gray Metallic (CGM)

Default Cobb Stage 2 0-90 MPH log - how's it look?

Hey guys,

I'd much appreciate your insight. I went Stage 2 with a SPT intake, Cobb catted DP, and STI cat-back about 400 leisurely miles ago. I did some 0-90 MPH runs tonight in an effort to see how my ECU is learning. This is the last run (rolling start) which also happens to be the one with the highest boost attained:

http://spreadsheets.google.com/pub?k...gQ&output=html

As you can see, I'm not hitting the Stage 2 boost target of 16.5psi by a considerable margin. I'm peaking at 14.8psi in 4th gear at 90 MPH before I hit the breaks and slow down.

I'm not sure if this is simply a matter of letting the ECU keep learning (multiple earlier runs peaked at only 13.8psi) or if there is something wrong with my setup.

Your expertise is much appreciated.

-DW
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Last edited by Drivinwest; 06-17-2009 at 11:42 PM.
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Old 06-18-2009, 10:30 AM   #2
freetors
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your turbo dynamics is always positive and your WGDC are basically flatlined.You are basically not running enough WGDC to hit target boost. You would probably need about 85% WGDC to hit your target boost
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Old 06-18-2009, 10:35 AM   #3
Drivinwest
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Default

Thanks for the reply. I just took the full acceleration section of the spreadsheet at which the TD were always positive - this is normal under WOT, right?

I'm not sure why my WGDC isn't higher. I suppose I'll check the vacuum lines. Anything else?

Thanks again.
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Old 06-18-2009, 04:09 PM   #4
freetors
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well you would normally like TD to be a small positive number, your's are well somewhat large. I don't know exactly what the WGDC map for your MY looks like nut it should be similar to the 2002 map and if thats the case, your WGDC's are actuall lower than the target
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