How to Tune AFR in Closed Loop
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Joined: Jan 2009
Posts: 70
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From: Clearwater , Florida
Car: '87 Vette C4
Engine: 400 + .040 = 409 ci
Transmission: 700R4 built
Axle/Gears: Dana 44 w/3.42's
How to Tune AFR in Closed Loop
I have an '87 vette MAF TPI with 7165 ECM tuning on 32B mask switching to 6E ... I need to know where to tune to achieve BLM stability while in closed loop . What is the MAF scalar ? How does it affect tuning ?
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: How to Tune AFR in Closed Loop
if you switch to 6E, in the 6E definitions just tune MAF table values. Dont really need to touch scalars.
If you ran 32B, I believe you can also tune MAF tables or just tune the injector base pulsewidth tables.
If you ran 32B, I believe you can also tune MAF tables or just tune the injector base pulsewidth tables.
Thread Starter
Joined: Jan 2009
Posts: 70
Likes: 4
From: Clearwater , Florida
Car: '87 Vette C4
Engine: 400 + .040 = 409 ci
Transmission: 700R4 built
Axle/Gears: Dana 44 w/3.42's
Re: How to Tune AFR in Closed Loop
When you say tune the MAF tables exactly what am I to change with what expectation ? ..... i.e. ... if I raise the values it will ... lean the AFR or richen the AFR ?
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: How to Tune AFR in Closed Loop
see your other thread on this topic. Raise values increases amount of fuel injected so it will richen the motor
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