BUG report: lockup not linked to MAP for LOAD
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BUG report: lockup not linked to MAP for LOAD
hello,
I found that lockup is only linked tp TPS, but not to MAP, when you choose MAP for LOAD indication in stead of TPS.
I noticed this, because lockup sdhould only engauge at 50% or less TPS and 1500rpm in my settings. I use MAP for load indication at 75kPa MAP which is 75%LOAD the lock up stays engauged.
see attached MSQ for my setup and this link for the LOG file I made.
I found that lockup is only linked tp TPS, but not to MAP, when you choose MAP for LOAD indication in stead of TPS.
I noticed this, because lockup sdhould only engauge at 50% or less TPS and 1500rpm in my settings. I use MAP for load indication at 75kPa MAP which is 75%LOAD the lock up stays engauged.
see attached MSQ for my setup and this link for the LOG file I made.
- Attachments
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- screenshot log file
- lockup_MAP-75kPa-75pLOAD.png (95.2 KiB) Viewed 1241 times
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- 2017-12-30_23.36.13.msq
- my current tune
- (30.35 KiB) Downloaded 88 times
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Re: BUG report: lockup not linked to MAP for LOAD
I assume you are talking about converter lockup. In the past I have controlled converter lockup using MAP on a spare MS output. I must say I wasn't happy with it though, and eventually used a combination of MAP & TPS.
Ken
Ken
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Re: BUG report: lockup not linked to MAP for LOAD
yes converter lockup. it now only uses TPS. I think it should use LOAD or at least have the option to use MAP in stead of TPS, because you can choose TPS or MAP for load indication.kjones6039 wrote:I assume you are talking about converter lockup. In the past I have controlled converter lockup using MAP on a spare MS output. I must say I wasn't happy with it though, and eventually used a combination of MAP & TPS.
Ken
my project page, BBC 454 with LPG vapour injection:
my BBC 454 LPG vapour injection tuning story
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My 1977 GMC C15 Suburban "Storm"
my BBC 454 LPG vapour injection tuning story
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Re: BUG report: lockup not linked to MAP for LOAD
Where do I report these bugs? is this sub-forum the correct place for it?
my project page, BBC 454 with LPG vapour injection:
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My 1977 GMC C15 Suburban "Storm"
my BBC 454 LPG vapour injection tuning story
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My 1977 GMC C15 Suburban "Storm"
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Re: BUG report: lockup not linked to MAP for LOAD
bump
guys. has this been noticed? a lockup that engages when there is over 50% load can break a converter. So its a bad thing.
can somebody confirm this bug please? and will it be dealth with in next firmware update?
guys. has this been noticed? a lockup that engages when there is over 50% load can break a converter. So its a bad thing.
can somebody confirm this bug please? and will it be dealth with in next firmware update?
my project page, BBC 454 with LPG vapour injection:
my BBC 454 LPG vapour injection tuning story
my Facebook projectpage:
My 1977 GMC C15 Suburban "Storm"
my BBC 454 LPG vapour injection tuning story
my Facebook projectpage:
My 1977 GMC C15 Suburban "Storm"
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- Master MS/Extra'er
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Re: BUG report: lockup not linked to MAP for LOAD
I forgot to upload my logfile.
so heres my logfile from what you can clearly see that TCC is at 70% while MAP is over 50 kPa. And I use MAP for load indication, so over 50 kPa is over 50% load.
so heres my logfile from what you can clearly see that TCC is at 70% while MAP is over 50 kPa. And I use MAP for load indication, so over 50 kPa is over 50% load.
my project page, BBC 454 with LPG vapour injection:
my BBC 454 LPG vapour injection tuning story
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My 1977 GMC C15 Suburban "Storm"
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Re: BUG report: lockup not linked to MAP for LOAD
It isn't a bug, the code is designed to use TPS, that's why the setting is called "Lockup min TPS".
James
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Re: BUG report: lockup not linked to MAP for LOAD
Thanks James for clearing that up. There is an option though to select MAP for load indication. so could I make a feature request to add "Lockup min MAP" or Lockup min LOAD"?jsmcortina wrote:It isn't a bug, the code is designed to use TPS, that's why the setting is called "Lockup min TPS".
James
my project page, BBC 454 with LPG vapour injection:
my BBC 454 LPG vapour injection tuning story
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My 1977 GMC C15 Suburban "Storm"
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My 1977 GMC C15 Suburban "Storm"
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Re: BUG report: lockup not linked to MAP for LOAD
Probably the best option as a work-around on current code is to wire the MAP signal to the TPS input too, and calibrate it so that around 20 kPa is 0% throttle and 100 kPa is 100% throttle.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
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Re: BUG report: lockup not linked to MAP for LOAD
Thanks Matt. Ill look into that.Matt Cramer wrote:Probably the best option as a work-around on current code is to wire the MAP signal to the TPS input too, and calibrate it so that around 20 kPa is 0% throttle and 100 kPa is 100% throttle.
still hope though that it will be a feature that gets into the next firmware, since MAP is a lot easier for LOAD indication for retrofit vehicles that run a carb.
a cheap MAP sensor is $10 and the cheapest TPS kit is $100+ from what I have found
my project page, BBC 454 with LPG vapour injection:
my BBC 454 LPG vapour injection tuning story
my Facebook projectpage:
My 1977 GMC C15 Suburban "Storm"
my BBC 454 LPG vapour injection tuning story
my Facebook projectpage:
My 1977 GMC C15 Suburban "Storm"