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Old 07-17-2006, 11:16 PM   #1
Scooby Specialist
Member#: 72829
Join Date: Oct 2004
Chapter/Region: W. Canada
Location: Calgary, Canada
2006 WRX
2015 WRX

Default Access Port Stage 2 only hitting 13.3psi in 3rd gear

One day after putting on the Cobb DP and loading Stage2 I did some data logging so that I can compare to the Stage1 results.

-2nd gear response was quicker (boosting ealier in rev range) and peaked at 12.8psi.

-3rd gear response was pretty much same as Stage1, peaking at 13.3psi. Actually, the Stage1 log peaked higher at 14.2psi.

-Target boost, accroding to the map notes, is 15.2 +/-0.7psi

-Thinking that it just needed some time, I waited a few days and drove it some more. Hooked up AP to monitor Live Boost today and it did not go any higher in 3rd gear.

I'll do more logging tonight and do some plots. I asked Jarrad at PDX about it and he wrote that the car should hit target boost right off the bat.

Don't know what is going on here...do I have to go through that bit about shortening the waste gate actuator arm?

[EDIT] adding plot...peak is 13.6psi
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Last edited by Airboy; 07-18-2006 at 03:04 AM.
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Old 07-17-2006, 11:22 PM   #2
Scooby Specialist
Member#: 96793
Join Date: Sep 2005
Chapter/Region: W. Canada
Location: Edmonton
02 ProTuned TD04
Now with more clunks!


Are you mashing the pedal or rolling into it?

I find I hit different boost depending on how my foot controls it.

My peak is about 16psi by my AM Nexus gauges...haven't used AP to measure in a long time. I don't hit 16 or even 15 every time though...

Running AP Stg 2 91
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Old 07-17-2006, 11:30 PM   #3
Scooby Specialist
Member#: 88738
Join Date: Jun 2005
Chapter/Region: W. Canada
Location: Calgary
2005 WRX


I'm stage 2, 91 oct. My average psi numbers (using the AP live boost reading) are:

2nd: 14.3
3rd: 14.7
4th: 15.3

At stage 1, 91 oct. I got

2nd: 13.1
3rd: 13.4
4th 13.8

You might want to wait a week and try again before messing with the arm.
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