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I am wiring it myself. And tuning it myself. I think I will try to do it using the Silverado ECM
I am way over budget and really can't afford to spend much more to get it running. I will
just turn...

Can I just use a 2012 Silverado ECM with a 2012 Camaro wire harness and tune it as if it were a truck?
Its a manual trans so can't I just set the trans type in the tune to a manual? Wonder if the...

I have an unknown E38 ECM pn#12653784 serv#12633238 is there some way from those two numbers to find out what it came out of?
I am using a 2012 Camaro SS LS3 manual wire harness on an LS3 swap in a...

I made another discovery with the car (72 Z28 restomod). I was going to give up on the MAF
and go SD. Because the AFR is so stable in SD. However, I read where so many recommend
trying to keep...

That is interesting. I am not sure what truck I got the tables from but the flow rate in the injector tables had
flow rate of 51lbs/hr at 408Kpa and my ls3 injectors had 42lbs/Hr at 408Kpa so I...

I copied the Sierra 2500 6.2L Flex Fuel injector temp offset table into my tune since those are the injectors
I am using. Right now I am trying to tune the MAF and VE. So, I want to be sure that...

I read the "rich after flash" post and logged my injector tip temp and flashed my last MAF only tune
into the car. When I started it, it did indeed peg the injector tip temp at 212F degrees or...

I searched for "rich after reflash" and got the following...is this the current procedure?"

First off - dial in your injection timing as this changes fuel atomization and burn efficiency... After...

OK, should the tune be in open or closed loop? My VE and MAF tunes are all open loop with all the open loop gains set to 1.00. So, fuel trims still work even if your in open loop? Won't that mess...

I made a new layout to plot dynamic vs MAF vs VE airflow. Is this what you mean:
I also made a histogram that plots the percent diff between MAF vs VE airflow at
different MAP/RPM values.

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Not sure what you mean by "plot airflow from MAF, VVE, and the dynamic combination simultaneously". So, I can leave the MAF plugged in and not bother hotwiring the IAT and just do set Engine...

No I am not sure what you mean. However, the VE tuning instructions I am following state to put a "1" in all the open loop gains such as the injector temperature gain for VE tuning. For normal...

I did notice when tuning the MAF it would switch back and from from rich to lean below 2500RPM every time I would paste and multiply by % minus 1/2 and make another run it would be 5% rich then do...

I hot wired the IAT to keep the IAT reading. It did log the correct IAT temps all the way. I wanted to be absolutely sure the
MAF was out of the equation when I tuned the VVE table in HPT 3. I...

I tuned the VE in open loop and it ran good after that was done. I followed the tutorials.

Then I plugged the MAF back in ran it in open loop tuned the airflow vs frequency and it ran good.
...

I am using flex fuel injectors from a 6.2L sierra HD 2500. I got all the injector
tables froma Sierra HD 2500 tune file. I also did the injector timing following
an older tutorial I found on...

Well it looks like my wideband is reading wrong. I tried recalibrating it and it blinked
a red light error code 8 - bad sensor. So, I got a new Bosch wideband sensor
and deiced to recheck my VE...

I finally found the table that was locking in my open loop to 12.66. The Fuel->Open/Closed Loop->Misc->EQ Ratio Min was all set to 1.135 I reset it to
stock Camaro E38 and that fixed my open loop...

Here is a snapshot of my oscillating AFR and O2's switching. The AFR oscillates between 13.09 and 15.60 in this area you see here. And you can feel the car surging back and forth.
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Here is an update. I just thought about this myself yesterday and decided to set up a histogram and log my wideband observed AFR as columns and the row values as MAF lb/hr (as I have the MAF dialed...

I went through all the DTC and found some for the rear O2's that were not disabled. I
set them to no SES no error reported and it seems to go into closed loop shortly after
I fire it up now. ...

I have a standalone E38 PCM running a 418 LS3 with a 235/247 TSP F35 cam.
The car keeps dying out all the time when you crank it and I think I see why.
The PCM keeps commanding super rich mixture...

Yeah that makes sense. Perhaps I need to transition the base idle spark into the main spark table. I will try to set up some more histograms and look at this some more. I'll post my tune and logs...

Yes. A whole lot to get the VE and MAF tables done. I went through a lot of older threads on here too about how to eliminate the bucking and surging. That may be part of why I don't have any power...

It is not a grabby clutch. It seems really progressive to me. Just any load on the engine below 1500 kills it. I have bumped the timing back quite a bit to get rid of the bucking at low speeds. ...