[s-cars] 3071 turbo & Pastore RS2 code question

[djdawson2 at aol.com]

Now... if you could incorporate a barometer into the equation, you might have a great solution.  Granted, you can go higher without compensation... it'll just run a little fat.  But go lower, and you may end up welding parts together.
 
Get a tranny yet?
 
Dave
 
-----Original Message-----
From: Jim Green <jim.green at gmail.com>
To: djdawson2 at aol.com <djdawson2 at aol.com>
Cc: forgied at ae.ca; s-car-list at audifans.com; pkrasusky at ups.com
Sent: Tue, 21 Mar 2006 14:02:42 -0700
Subject: Re: [s-cars] 3071 turbo & Pastore RS2 code question




Hey Dave, I thought I'd chime in with my findings.  I've had the laptop and WB O2 up at the top of Eisenhower 11,xxx ft twice now and have found that only a few % difference in fuel is required.  I had made a rough map in the altitude compensation cells that pulled about 7% of the fuel out from Denver to the top of the pass.  This was way to much and the car was running lean.  I changed it to the minimum values which is about 2% between the two extremes and it ran great.  Bottom line is you could get away with not even changing anything.  By nature the MAP sensor is constantly correcting for the pressure outside so having a second sensor on board for this seems to be a moot point.  What you do have to program is the temperature compensation.  This is the biggest thing that has an effect on air density for MAP based systems. 


-- 
Jim Green
'89 90 GT35R quattro
'89 80q
http://www.mswanson.com/~jgreen/car_home.html