Am I rich?
Thread Starter
Burning Brakes
Joined: Apr 2000
Posts: 980
Likes: 2
From: Chandler AZ
Am I rich?
At WOT Diacom shows an 11:1 A/F ratio! It still shows a 14.7:1 while in closed loop. I have been droping the fuel pressure but it doesn't come down quickly. Hints, tips, suggestions, and general advice will be appreciated. O2 sensor?
Coolant 192º
Oil 189º
Air 104º
Humidity 10%
Dew point 27º
Blood pressure 180/130 ( Forgot the meds )
OH Yeah almost forgot is it 12.8:1 that is ideal?
I messed up the data capture or I'd post more info.
V
Made another Diacom run with 3# less fuel pressure showing. I am now running about 39# of pressure. It felt much better too. Also Diacom now shows between 11.6 and 12.5:1 AFR. The O2 voltage is now between 850 and 903mv when WOT in 3rd gear.
[Modified by The Need For Speed, 1:36 PM 6/2/2002]
[Modified by 90_roadster, 3:28 PM 6/2/2002]
Coolant 192º
Oil 189º
Air 104º
Humidity 10%
Dew point 27º
Blood pressure 180/130 ( Forgot the meds )
OH Yeah almost forgot is it 12.8:1 that is ideal?
I messed up the data capture or I'd post more info.
V
Made another Diacom run with 3# less fuel pressure showing. I am now running about 39# of pressure. It felt much better too. Also Diacom now shows between 11.6 and 12.5:1 AFR. The O2 voltage is now between 850 and 903mv when WOT in 3rd gear.
[Modified by The Need For Speed, 1:36 PM 6/2/2002]
[Modified by 90_roadster, 3:28 PM 6/2/2002]
Le Mans Master
Joined: Dec 1999
Posts: 8,540
Likes: 1
From: And on the fifth day, subpoenas were served to Obama senior staff
Re: Am I rich? (90_roadster)
Unless you are using a Wide Band O2 sensor, there is no way to know what your mixture is other than at closed loop 14.7/1. Stock O2 sensors have no accuracy except 14.7/1.
Pro
Joined: Oct 2001
Posts: 682
Likes: 23
From: loxahatchee fla
Re: Am I rich? (PeteL)
possiable additional tuneing options http://www.dawesdevices.com/airfuelmeter.html
http://www.dakotadigital.com/tech/ODY-13-2.htm
http://www.scuderiaciriani.com/rx7/AF_meter.html
Thread Starter
Burning Brakes
Joined: Apr 2000
Posts: 980
Likes: 2
From: Chandler AZ
Re: Am I rich? (PeteL)
Unless you are using a Wide Band O2 sensor, there is no way to know what your mixture is other than at closed loop 14.7/1. Stock O2 sensors have no accuracy except 14.7/1.
Thanks Again,
v
Le Mans Master
Joined: Dec 1999
Posts: 8,540
Likes: 1
From: And on the fifth day, subpoenas were served to Obama senior staff
Re: Am I rich? (90_roadster)
It is a tuning aid only and quite expensive. Orginal O2 must be kept for ecm, second bung welded in for wideband O2.
