Open Loop - Unique questions
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Joined: Jul 2005
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From: Detroit, MI
Car: 1991 Firebird
Engine: 350,Dart Heads,Weiand In,Roller Cam
Transmission: 2400-Stall, 700R4 w/ Kit
Axle/Gears: 4th Gen 3.42 disc (I wish)
Open Loop - Unique questions
What is the computer "disabling" during open loop?
A/F pinging lean/rich?
EGR?
TCC?
SA table?
SA adjusters?
KNOCK RETARD!?!
REV limiter?
PE?
DE?
etc....?
And here is another question:
Do the VE tables control fueling in Open Loop?
Whitehawk
A/F pinging lean/rich?
EGR?
TCC?
SA table?
SA adjusters?
KNOCK RETARD!?!
REV limiter?
PE?
DE?
etc....?
And here is another question:
Do the VE tables control fueling in Open Loop?
Whitehawk Thread Starter
Member
Joined: Jul 2005
Posts: 290
Likes: 0
From: Detroit, MI
Car: 1991 Firebird
Engine: 350,Dart Heads,Weiand In,Roller Cam
Transmission: 2400-Stall, 700R4 w/ Kit
Axle/Gears: 4th Gen 3.42 disc (I wish)
Re: Open Loop - Unique questions
1991 Firebird 8746
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Re: Open Loop - Unique questions
Typically in open loop for the older ECMs, the O2 corrections are usually ignored for the first few minutes while the sensor reaches operating temperature. During this time, the computer just uses the calibration to calculate the fueling (MAP, VE tables, etc.).
SA is always used except when cranking. All the other items have their own qualifiers for when they will be in effect, and these are mostly independent of whether your in OL or CL. The only exception would likely be the EGR.
SA is always used except when cranking. All the other items have their own qualifiers for when they will be in effect, and these are mostly independent of whether your in OL or CL. The only exception would likely be the EGR.
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