Lean cruise patch for OS 12212156

They go by many names, P01, P59, VPW, '0411 etc. Also covering E38 and newer here.
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Phoenix
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Lean cruise patch for OS 12212156

Post by Phoenix »

EDIT 06/27/22: Added the "Fuel Air Ratio Spark Correction" table. The patch will change all values in this table to 1.00 so that the timing inserted in the "B5908 - Fuel Air Ratio Spark Correction" table will just be multiplied by 1.

Just like my other patch for OS 12587603, I'm attaching a patch to turn on lean cruise for OS 12212156 on the P01. After applying this patch you will need to write a full flash for it to take effect. The patch also populates the tables needed to get you started on your combination. A wideband is HIGHLY encouraged while tuning. The same disclaimers from the other thread apply here, if you blow up or melt your engine I'm not responsible.

If you find any errors please let me know and I'll try my best to correct them.
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OS 12212156 Lean Cruise Patch v.2.0.zip
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Last edited by Phoenix on Tue Jun 28, 2022 3:31 am, edited 1 time in total.
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hsv08
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Re: Lean cruise patch for OS 12212156

Post by hsv08 »

Phoenix wrote:Just like my other patch for OS 12587603, I'm attaching a patch to turn on lean cruise for OS 12212156 on the P01. After applying this patch you will need to write a full flash for it to take effect. The patch also populates the tables needed to get you started on your combination. A wideband is HIGHLY encouraged while tuning. The same disclaimers from the other thread apply here, if you blow up or melt your engine I'm not responsible.

If you find any errors please let me know and I'll try my best to correct them.
What ADX are you using?
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Phoenix
Posts: 112
Joined: Sat Aug 22, 2020 5:02 am
cars: 1983 Chevy C10
1993 Ford Mustang LX 5.0
2004 Pontiac GTO
2005 Pontiac GTO
Location: Anna, TX

Re: Lean cruise patch for OS 12212156

Post by Phoenix »

hsv08 wrote:
Phoenix wrote:Just like my other patch for OS 12587603, I'm attaching a patch to turn on lean cruise for OS 12212156 on the P01. After applying this patch you will need to write a full flash for it to take effect. The patch also populates the tables needed to get you started on your combination. A wideband is HIGHLY encouraged while tuning. The same disclaimers from the other thread apply here, if you blow up or melt your engine I'm not responsible.

If you find any errors please let me know and I'll try my best to correct them.
What ADX are you using?
You could use Universal Patcher, PCM Logger, or a commercial suite like HPTuners or EFI Live. I don't know of any ADX for this OS, but I've really never looked for one either.
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Phoenix
Posts: 112
Joined: Sat Aug 22, 2020 5:02 am
cars: 1983 Chevy C10
1993 Ford Mustang LX 5.0
2004 Pontiac GTO
2005 Pontiac GTO
Location: Anna, TX

Re: Lean cruise patch for OS 12212156

Post by Phoenix »

Revised XDF added to first post.
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