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$8D-T: CEL flashes When KR, yet another wideband patch etc.

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Old Feb 24, 2023 | 09:46 AM
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From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
$8D-T: 8D patches

Here's a tunerpro patch to have the Check engine light flash on when KR is above a threshold. Scalar at top has the KR value you wish to turn on for.
DriveMode is a mode changing developmental thing. As of today it changes modes 0-2. Mode 0 is an injector kill switch along with a diagnostic readout (paperclip Trick). Mode 1 is Valet. Mode 2 = normal.

This also reads a wideband and stores it into RAM and allows direct logging.
This also has the patch for the MAT timing table to adjust timing based off MAT (or IAT).

This is running on my $8D AXXC/D car. If you don't know if this is compatible with your car, don't use it. If you already have a patch that uses new ram spots, it should tell you the current patch status is indeterminate but use at your own risk if you can't check the code addresses. Change the file type to XDF.
Attached Files
File Type: txt
8D-T-test-XDF.txt (323.4 KB, 15 views)

Last edited by Vanilla Ice; May 23, 2025 at 11:00 AM. Reason: n
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Old Feb 25, 2023 | 09:51 AM
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From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
Re: $8D Candy: CEL flashes When KR, yet another wideband patch etc.

Do NOT use the a13 patch. It's not been coded in the patches yet.

Last edited by Vanilla Ice; Mar 7, 2023 at 05:29 PM. Reason: Drivemode works
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Old Mar 7, 2023 | 10:00 AM
  #3  
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From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
Re: $8D Candy: CEL flashes When KR, yet another wideband patch etc.

Not that anybody cares, but I've updated the CEL flash code to no longer flash when key off so it looks OEM.
I've also uploaded the Drivemode base code. This allows different modes to be selected based off stabbing the throttle at idle or with engine off. With this only being the base code, only mode 0 is different. Mode zero kills injectors and does the paperclip trick without needing the paperclip. It also flashes the CEL when changing Modes. Eventually Mode 1 will have a hardcoded timing pull to make the car slow and boring as a valet or kid mode. Then mode 2 will be "normal." Mode 3 can be written in as high performance (No KR allowed, or different fueling etc.) Be aware of settings on this as if you have them incorrectly and attempt to launch the car it can change your mode and if it enters mode 0 it will turn off your injectors and your launch will end. I'd advise you lower the RPM to below idle level so that you can only switch modes when the key is off.
Also on there is the start of a 2 Bar MAP code. It should not be used unless you know EXACTLY what you're doing. This is the start of my reworked $8D-Turbo code.
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Old Mar 7, 2023 | 05:28 PM
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From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
Re: $8D Candy: CEL flashes When KR, yet another wideband patch etc.

Valet Mode added; 15.8 Degrees when in Mode 1 of Drivemode. Mode 0 is Diagnostic/Fuel Cut Mode, 2+ is still normal.
MAT (IAT) timing Adder Table added.

Last edited by Vanilla Ice; Mar 7, 2023 at 05:36 PM.
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Old Apr 23, 2025 | 05:52 PM
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From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
Re: $8D-T: CEL flashes When KR, yet another wideband patch etc.

This is all binned as well.
I've created new patches that read the 2 inputs, flash the cel when kr and also allow valet mode, code reading on the fly.
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Old Apr 29, 2025 | 03:36 PM
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From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
Re: $8D-T: CEL flashes When KR, yet another wideband patch etc.

First post updated.
The 2 bar map sensor code turns a 2 bar into a 1 bar when the ECU looks it up. But it also loads a 2 bar value into ram to be used, later it will scale it perfectly for OEM tables with doubled map axis values...
If you're creative, you can use the patch for boost, but you'll need to figure out how on your own. It's "easy."
The MAT timing adder table should work, tho I haven't tested it. Feel free to.
The launch control is for now a simple RPM fuel cut at set RPM when stopped. Future will have some timing tricks if I get around to it.

Last edited by Vanilla Ice; Apr 29, 2025 at 04:09 PM.
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