[darkpuppet]

Scorcher000,Apr 20 2009, 10:25 AM Wrote:Very good info because I have an Etest in a week or 2. Thnx Puppet
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For e-test, your car will likely be aiming for 14.7 during the closed loop tests that they do. That's because the focus is equipped with a narrow band O2 sensor and that only tells the car if it's richer or leaner than 14.7..

If your hydrocarbons or NO is high (but not both), your A/F may be out of wack -- which indicates fuel delivery, O2 sensing or Air measurement...

and if you're running 14.7 in closed loop, you should be fine on your etest (with stock cats at least)

Just to note:

If I were doing a 91 tune for a NA car.. I'd do the following:
bump the base spark table to equal the borderline knock table
bump the borderline knock table a few percentage points closer to the max TQ spark table
lean fuel mixture at WOT a couple percentage points across the table
Dyno tune and check for pinging and adjust accordingly.