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Thread: 58x to 24x crank sensor with gen iv ecm

  1. #1
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    58x to 24x crank sensor with gen iv ecm

    Has anyone figured the secret and willing to share a tune file for running a 24x engine with a ecm that was factory a 58x engine.
    I've read alot of threads on the subject I've seen a few people say it's possible. But never seen anyone confirm that the tune file existed and the threads all seem to be old. So I'm just wondering if there was ever any progress with this.
    I have an 07 cadillac escalade was a 6.2 swapped out with a 05 5.3 24x sensor engine. Really don't want to pull the engine out to swap the reluctor ring.
    (I didn't know about this until after the swap was completed)

  2. #2
    Lingenfelter makes a converter box to go the other way, from a 58x engine to a 24x ecm, but I do not believe the opposite exists.

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    Tuning Addict blindsquirrel's Avatar
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    ...and if it were possible I believe somebody would have built one like 15 years ago.

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    I know the E40 will run on 24x/1x. The 2005 LS2s were 24x and ran on the E40s atleast in the Corvette.

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    I have been intending to mess around with the E67 and see if it will run on 24x and 1x as well. I have a 24x 5.3L I can test it on someday. Just have other projects in front of it and still have to convert the E78 harness I have to run on the E67 as well as convert that harness to standalone.

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    Tuning Addict blindsquirrel's Avatar
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    E40 Corvette was '05 only, '05-06 GTO/Trailblazer(& other GMT360)/Impala(LS4)...

    The waveforms are very different between the 58x wheel and 24x though, it's not just the number of teeth. The 24x is more like a resolver, it doesn't need a full revolution to know its position (and also direction of rotation) because of the dual tracks and the pattern they make.

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    Quote Originally Posted by blindsquirrel View Post
    E40 Corvette was '05 only, '05-06 GTO/Trailblazer(& other GMT360)/Impala(LS4)...

    The waveforms are very different between the 58x wheel and 24x though, it's not just the number of teeth. The 24x is more like a resolver, it doesn't need a full revolution to know its position (and also direction of rotation) because of the dual tracks and the pattern they make.
    I realize the wave forms are different, however some operating system out there may have the physical switch like the 0411 and P59s do. GM used the same hardware inside the PCM for both the 4x, 24x and 58x, its the software that is different. I have also intended to look into some of the GMPP controller files. The GMPP controllers are very similar to the Marine/Industrial controllers. The marine version of the E67 has 4x support even.

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    I will also add that on a GM using a 12V crank/cam sensor, it does not matter whether the sensor is hard wired for ground and power or if it is wired to the PCM. I have operated them both ways and there is no detectable difference in operation. Same goes for 02 sensor heaters. My P59 run L31 based 383 has the 02 sensor heaters wired directly, just disabled the heater codes since they did not apply to my application.

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    So is it possible to take a tune file from a e40 5.3 l and write it into a e38 or e67 module to make it run off of the 24x sensor while still maintaining communication with all the other vehicles modules?

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    Quote Originally Posted by Bkauto1 View Post
    So is it possible to take a tune file from a e40 5.3 l and write it into a e38 or e67 module to make it run off of the 24x sensor while still maintaining communication with all the other vehicles modules?
    The files do not interchange into different hardware modules. So the answer is no to that. When I get more time I will do some digging on the E38 and E67 and attempt to run a 24x 5.3L on the engine stand with an E67 i know that it can be done, just how extensive the modification to the E67 operating system will be I am not sure of.

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    I'm close to fabricating a front crank pulley with a 58x reluctor wheel on it and running the engine with an external factory sensor on a fabricated solid sensor mount just to get it running and figure the tune later if it's possible or if the external sensor works well maybe leave it. This is my dad's everyday driver and I need to get it back on the road as soon as I can for him.
    I was think somewhere in the information I have read over the last few days the e40 and e38 e67 have same hardware just different software?? That's why I was thinking taking the e40 tune and force it into the e38 the cadillac escalade has. All I know is I don't want to pull the engine back out and pull the crank. I'm willing to pay someone who has a tune solution for me and can send me a file or just tell me what to do to tune the 07 cadillac escalade ecm to run on a 24x sensor

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    I had heard but never conformed years ago that Jesse (Wait4Me) had a 24x engine running on an E67. I have actually intended to contact him as well to find out. If he can make a 24X/1X sensor combination run on an E67, I would pay him for the base file to get my SBC E67 running without having to go to an overpriced EFI Connection 58X/4X system. Their 58 tooth reluctor is cheap enough but their 4x cam sensor solution is way overpriced and only comes with a junk double roller.

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    I have reached out to Jessie wait4me via email off his website. Fingers crossed he can help me. His site says he does any type of tuning even binary so hopefully he will be able to help. Thanks for the mention of his username

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    Quote Originally Posted by Bkauto1 View Post
    I have reached out to Jessie wait4me via email off his website. Fingers crossed he can help me. His site says he does any type of tuning even binary so hopefully he will be able to help. Thanks for the mention of his username
    Ironically I also emailed him right after I posted that. While it was fresh on my mind.

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    Jesse sent me a message stating he does not do that work any longer. So apparantly it is possible to run an E67 on a 24x signal. Now to figure out how to do it.

  16. #16
    Senior Tuner edcmat-l1's Avatar
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    Some people will believe anything because it's on the internet.

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    Quote Originally Posted by edcmat-l1 View Post
    Some people will believe anything because it's on the internet.
    Not sure what you are getting at here. The E67 definitely has settings for the crank reluctor in use. You'll have not defined them but they are definitely there. The code has multiple crank trigger options. Jesse Bubb stated he had a 24x engine running on an E67 so it is absolutely possible.

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    Senior Tuner edcmat-l1's Avatar
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    Quote Originally Posted by Fast4.7 View Post
    Not sure what you are getting at here. The E67 definitely has settings for the crank reluctor in use. You'll have not defined them but they are definitely there. The code has multiple crank trigger options. Jesse Bubb stated he had a 24x engine running on an E67 so it is absolutely possible.
    Please, point me to where an E67 gives me a choice between a 24X and 58x reluctor.

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    Quote Originally Posted by edcmat-l1 View Post
    Please, point me to where an E67 gives me a choice between a 24X and 58x reluctor.

    As you may know already, most tuning software only accesses a portion of the overall code within the OEM calibration.

    The OEM E38 and E67 calibrations both contain coding for the CKP Sensor and the CMP Sensor.

    Changing the parameters from 58x to 24x, and from 4x to 1x is reasonably straight forward for anyone who has worked with a raw calibration and added additional parameters to tuning software for their own use.

    I briefly looked at this a decade or so ago - just for fun. I came to the realization that there were additional tables / diagnostics that would also need to be mapped, and then added to the tuning software, to achieve an OEM level of operation.

    In my case, it was not worth the bother (hours) for such a limited use functionality.

  20. #20
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    Quote Originally Posted by Shrek View Post
    As you may know already, most tuning software only accesses a portion of the overall code within the OEM calibration.

    The OEM E38 and E67 calibrations both contain coding for the CKP Sensor and the CMP Sensor.

    Changing the parameters from 58x to 24x, and from 4x to 1x is reasonably straight forward for anyone who has worked with a raw calibration and added additional parameters to tuning software for their own use.

    I briefly looked at this a decade or so ago - just for fun. I came to the realization that there were additional tables / diagnostics that would also need to be mapped, and then added to the tuning software, to achieve an OEM level of operation.

    In my case, it was not worth the bother (hours) for such a limited use functionality.
    I am digging for more information daily on it. Not so much to put a GenIII engine into a GenIV application. It is more to put a GenIV management in a GenIII or even Small Block or Big Block 4x crank sensor application so that a 6L90E can be run behind the older platforms.