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Old 11-06-2012, 09:36 AM   #7 (permalink)
turbovr41991
Master EcoModder
 
Join Date: Nov 2008
Location: Cincinnati
Posts: 323

Civic CX/HX - '97 Honda Civic CX/HX
Team Honda
90 day: 63.77 mpg (US)
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Quote:
Originally Posted by Outlaws69 View Post
Can someone refresh me on the Lb limits again??? TPS, load limits, RPM limits, thank you very much...
The noticeable limits to enter lean burn seem to be:

1. warm engine driven for a mile or two at higher speeds. If I EOC, it takes a mile or two to get back into lean burn.

2. TPS (throttle position sensor) to be 19% or less.

3. LOD (engine load) to be 65 or less

4. RPM (I saved this one for last as I see two different RPM limits. AKA good mood, and bad mood.

I will start the "bad mood" lean burn. If the above conditions are met and I am at 2500 rpm, I will go into lean burn 100% of the time.

Good mood RPM limits engage around 1900-2000 rpm and can stay in anyware from 1800 - 3100 rpm. I can get into this when I first get on the highway and the engine first hits optimal temp. Once in I am able to stay in for 200+ miles If I fall out from hitting a traffic jam, it is hit or miss if I can get back in. Normally I am not able to get back in this good mood RPM lean burn.

The noticeable limits to stay in lean burn seem to be:

1. Steady throttle. try not to make any sudden changes

2. TPS (throttle position sensor) to be 12% to 30%. Go to low and it enters DFCO, go to high and it will kick out.

3. LOD (engine load) to be 90 or less

4. RPM Bad mood - 2400 - 3100
RPM Good mood - 1800 - 3100
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The Following 2 Users Say Thank You to turbovr41991 For This Useful Post:
darcane (11-06-2012), Outlaws69 (11-06-2012)