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Old 04-14-2012, 04:32 PM   #198
SWP n Gold
Scooby Guru
Member#: 110783
Join Date: Mar 2006
Chapter/Region: Tri-State
Location: Stamford, CT
2010 WRX
Satin White Pearl


Originally Posted by Snow Drift View Post
Why don't you see the same ringland failures in the WRX? (most are early 2008 STI)
Some of the graphs I've looked at show the WRX tune not running as lean as the STi, but still too lean for longevity's sake. And others show AFRs as high as a stock STi. The lean areas of the stock tune vary even among WRXs.

2009 WRX: Stock and Stage 1:

2009 WRX: Stock and Stage 1:

The first graph starts to richen up at the 3,300rpm mark whereas the second one doesn't start to richen up until 3,900rpm.

However, the STi seems to richen up consistently after the 4,000rpm mark.

2010 STi: Stock and Stage 1:

2011 STi: Stock and Stage 1:

And now just to confuse the **** out of everyone, take a look at this:

2009 STi: Stock and Stage 1:

Stock is richer throughout the entire RPM range than even Stage 1. So, who's ready to move on to a different engine platform so we can have safe factory tunes on our cars?
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