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12-11-2018, 02:03 PM | #1 |
Scooby Guru
Member#: 53558
Join Date: Jan 2004
Chapter/Region:
NWIC
Location: Deadford, OR
Vehicle:2005 Baja Turbo White/Silver/Black 3tone |
Retuned throttle map = no cruise?
I remapped my throttle for a more gradual opening of the throttle as the pedal is pressed, so instead of 80% throttle at 50% pedal, it's 50% throttle at 50% pedal.
And now my cruise doesn't work at all. If I set it at 55, the vehicle will slowly decelerate to 48 or so, then the CC disconnects and won't reconnect. D: Does this mean I need to stick with either stock throttle mapping, or close to it, to retain my cruise, or is this a symptom of something else? Vehicle is a 2005 Baja Turbo.
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12-11-2018, 05:47 PM | #2 |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
I highly doubt you'll find many people dabbling in cruise control tuning... but I wish you luck.
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12-12-2018, 01:48 AM | #3 |
Scooby Guru
Member#: 53558
Join Date: Jan 2004
Chapter/Region:
NWIC
Location: Deadford, OR
Vehicle:2005 Baja Turbo White/Silver/Black 3tone |
I don't care about tuning it, I care about how my throttle works.
Changing how the throttle pedal interacts with the throttle controller shouldn't effect the cruise control, since the cruise control just takes over control of the throttle position directly, but I'm not familiar with tuning DBW cars, so I'm trying to figure out if this is a problem with my tune, or something else... |
12-12-2018, 08:05 AM | #4 |
Scooby Newbie
Member#: 254317
Join Date: Aug 2010
Location: Toronto, Canada
Vehicle:2011 STi |
Yes, it a problem with your tune. My tuner did a similar throttle map for me and my cruise control works like before.
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12-12-2018, 01:28 PM | #5 |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
The problem is that the cruise maps aren't all unlocked and available for viewing nor has the system been studied extensively. Chances are, you're hitting some kind of fail-safe based on your throttle table and no one is going to know what the exact details are about that fail-safe (except Subaru and maybe some of the smarter open source guys).
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12-12-2018, 02:08 PM | #6 |
Scooby Guru
Member#: 53558
Join Date: Jan 2004
Chapter/Region:
NWIC
Location: Deadford, OR
Vehicle:2005 Baja Turbo White/Silver/Black 3tone |
I was looking through my tune, and apparently I forgot to save the Requested Torque table before I flashed the map. Going to fix the table and flash again, and if it doesn't work, I'll put the stock DBW maps back in.
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12-14-2018, 03:39 AM | #7 |
Scooby Guru
Member#: 53558
Join Date: Jan 2004
Chapter/Region:
NWIC
Location: Deadford, OR
Vehicle:2005 Baja Turbo White/Silver/Black 3tone |
I fixed the map, and the cruise works just fine now.
Except, at a fairly consistent time, it just disconnects and refuses to work... I'm assuming that that is connected to the Fuel Trim hitting +15%... Which I hope to fix this weekend. |
12-14-2018, 04:18 PM | #8 |
Scooby Guru
Member#: 33782
Join Date: Mar 2003
Chapter/Region:
MAIC
Location: Milton Keynes, UK
Vehicle:96 3MI Racing search FIRST, then PM!!! |
What did you do to 'fix the map'?
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12-15-2018, 06:10 AM | #9 |
Scooby Guru
Member#: 53558
Join Date: Jan 2004
Chapter/Region:
NWIC
Location: Deadford, OR
Vehicle:2005 Baja Turbo White/Silver/Black 3tone |
I set the Throttle Position map to a linear progression, and left the Requested Torque map stock. Which basically meant that at 70% pedal position, the throttle was at about 40% open.
I set both to a linear progression, and now the throttle acts like it's on the stock mapping, and when the cruise actually engages, it engages smoothly without losing or gaining speed (before it would engage, but it would gradually drop speed even on a flat until it just gave up and disconnected). Tomorrow, I'm going to pull the #2 and 4 injectors, swap the injector currently in #2 to the position of #4, and put a hopefully good used injector into #2. And hopefully, this fixes the +15% fuel trim, and misfire on #4 at idle. |
12-16-2018, 05:46 AM | #10 |
Scooby Guru
Member#: 53558
Join Date: Jan 2004
Chapter/Region:
NWIC
Location: Deadford, OR
Vehicle:2005 Baja Turbo White/Silver/Black 3tone |
Well... I pulled the bad injector and swapped in a different injector.
Problem's solved, and the cruise worked for like 20 minutes, until I overboosted so hard that I threw a CEL. D: |
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