AFR safety during flatshift

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TurboFan
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AFR safety during flatshift

Post by TurboFan »

James what will do code during flatshift in boost when wideband reading goes very lean up to AFR 20? Would it trigger AFR safety system?
BMW 525i, stroker 2.8L, MS3-Pro 1.4.1, BIPs 373, 66mm turbo 30 psi
jsmcortina
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Re: AFR safety during flatshift

Post by jsmcortina »

It is disabled during the flat-shift itself, but you still need to consider exhaust gas speed and sensor response time in order to set the "delay" setting.

James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

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TurboFan
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Re: AFR safety during flatshift

Post by TurboFan »

So no additional logic based on flatshift activation or system deactivated during spark cut? Gear shifts can be 0.25s, 0.5s or 0.7s in some cases. If no deactivation based on flatshift input delay must be 0.8s is it engine safely?
BMW 525i, stroker 2.8L, MS3-Pro 1.4.1, BIPs 373, 66mm turbo 30 psi
jsmcortina
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Re: AFR safety during flatshift

Post by jsmcortina »

TurboFan wrote:So no additional logic based on flatshift activation or system deactivated during spark cut?
As I said, AFR safety doesn't check when flat-shift (or launch) are active.

James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
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