99 L29 454 build

[BeXtreme]

Oh yeah, I had a tunerpro setup years ago for my obd1 s10 pickup! Can it do the crank relearn and cam retard?

There's nothing to "do". You can use the OBDx tool to read from the PCM and send the data over bluetooth to a phone or computer. The CMP retard PID can be viewed in several different apps like Dash command or torque to get it within the +-2 degrees that you need. I have a knockoff micro adapter and TechII stuff from ebay that I use for stuff like the CASE learn, but there might be another way using the OBDx tool and a different program.

 

[Piratehunter]

I've not had to perform the relearn, but recalled that @Mangonesailor and @BNielsen posted a note on the steps in this thread, https://www.gmt400.com/threads/bowtie-brodys-namesake-96-454.37609/page-160#post-1245947. I think I saw @Spareparts and @Reluctanse went through this, maybe any of them can add some advice. I found a couple shops close to me that I was able to help with the CMP adjustment for cheap or free. not sure how close to any shops you are.

 

[Spareparts]

I could not get Torque Pro to read CMP but i did not try to hard. My tool of choice was Dash Command with the extra GM PID.
Now i have a Snapon scanner ill be using.
I do not believe Tunerpro, PCHammer or LSDroid will do a CMP or crank relearn.

 

[Scottm]

Ok wow, why is it so hard? And how do you know if you need it?

 

[Spareparts]

If you moved the distributor you need it.

 

[Scottm]

I have been reading on the tunerpro site, but have more questions than answers. What is the difference between tunerpro and tunerpro rt? Where do I get the data cable?

 

[Piratehunter]

in my experience, the engine will run with the CMP off by 36*, but you can tell it is not running it‘s best and it will set the cel. this was because I installed the new dizzy gear 180 off. was able to dial that back in at a nearby shop that had a scan tool in short order. another time, I swapped the crank sensor, for no good reason, it really ran like crap, put the original back in and all was good. don’t remember if that set the cel light.

maybe these guys that have swapped 0411 and black box back and forth can share engine reaction on startup and if you can hobble to a shop with a scan tool and knowledge to do CASE relearn

 

[L31MaxExpress]

in my experience, the engine will run with the CMP off by 36*, but you can tell it is not running it‘s best and it will set the cel. this was because I installed the new dizzy gear 180 off. was able to dial that back in at a nearby shop that had a scan tool in short order. another time, I swapped the crank sensor, for no good reason, it really ran like crap, put the original back in and all was good. don’t remember if that set the cel light.

maybe these guys that have swapped 0411 and black box back and forth can share engine reaction on startup and if you can hobble to a shop with a scan tool and knowledge to do CASE relearn

I have never noticed any difference performing a CASE relearn except the SES light coming on in some vehicles if it has not been performed. I drove my van for nearly a year with the cam sensor non functional as well. No noticeable difference in the way it ran.

 

[Scottm]

Bextreme, I was on the OBDx site last night, but I don't get it. Can't tunerpro read and write to the ecm already? What does the Obdx thing do?

 

[Supercharged111]

I have never noticed any difference performing a CASE relearn except the SES light coming on in some vehicles if it has not been performed. I drove my van for nearly a year with the cam sensor non functional as well. No noticeable difference in the way it ran.

And that is why the 4x 411 LT1 swap is going to happen to my Camaro. Some day. No cam sensor? No problem!

I've always been under the impression that the CASE needs to be performed after a crank position sensor or PCM swap, not necessarily after having the distributor out?