06 GTO L92 swap

[[email protected]]

I have a 06 GTO trying to put a L92 into. The injectors are not spraying. I think I have disabled vats. I have attached my file. Thanks inadvance for any help.

[blindsquirrel]

Did you convert it over to 24x/1x before putting it in?

[[email protected]]

I have the lingenfelter tr-002 to convert the signal.

[blindsquirrel]

Do you have RPM signal in the scanner? Spark at the plugs? Does it have fuel pressure? Does it run if you shoot it with brake cleaner?

[[email protected]]

I have rpms. I have spark. When I shoot starter fluid in the intake it does run.

[blindsquirrel]

And the file you posted, is that the file you wrote to the ECM, or did you write it and then re-read the file to see what ended up making it through the flash? Did you do 'write entire' for the flash where you disabled VATS? Is the ECM one that was in there and running before, already paired to the... whatever weird gateway thing GTOs use?

Why did you apply the 2-bar OS? Did you also change the MAP sensor to one with the default-custom-OS specs of 200.00/10.33? What MAP sensor is it? What throttle body are you using - any codes? What injectors & intake - did you use all the L92 parts, or only some of them, or none? Why am I having to ask so so so many questions here?

[[email protected]]

i wrote this file to ecm and tried to start it. The ecm is the ecm that was orginally installed to the car. I wanted to swap a l92 into the my ls2 threw up.
no codes are being thrown
i did not realized i applied the 2-bar os?
the throttle body from the ls2
i have a ls3 intake and ls3 injectors
map sensor from a map sensor from a 2011 camaro
some of the parts are from the l92. The cam is tsp 228r cam. The front seal plate, cam gear was change to a ls3. Pistons are seal pistons. The heads are the l92 heads.

[blindsquirrel]

You need to go back to an older file, before the 2-bar OS got applied. Start over from there. VATS changes MUST use 'write-entire". As well as when the custom OS is done. If you weren't aware the OS was changed I don't have a lot of confidence it was done correctly.

You'll need to then input the correct MAP sensor linear/offset. And finally the LS3 injector data.

[edcmat-l1]

First, if the ECU belongs to the car, you should not have to disable VATS to start it. The new engine has nothing to do with the VATS system.

Second, the first question should be, what MAP sensor (part number, pic, etc.) is in the car? If you have a 1 bar sensor setup as a 2 bar in the tune, it'll cut the fueling in half. Kinda like what you probably got right now.

[[email protected]]

I went back to the original file. The ecm is for the car. The map sensor i have is ACDelco GM Original Equipment 213-4681 Multi-Purpose Pressure Sensor.

[blindsquirrel]

That is the baro sensor, and it's not 2-bar. There isn't a MAP sensor in that physical format that works with the E40's peculiarities (max linear of 256, offset cannot be negative).

You can try linear: 128.13 & offset: 0.00 (actual offset should be -0.31).

[blindsquirrel]

Holley's China Special brand (Sniper) has one like that they claim is "2.5 bar" but no one in their tech department knows what the terms 'linear' and 'offset' mean, everybody who used to work there who knew what's what have been replaced by social media-addled morons.

[[email protected]]

I went back to the original file.

[blindsquirrel]

If you still have that sensor installed, then you need to change this right here

screenshot.17-10-2023 00.46.53.png

[edcmat-l1]

I went back to the original file. The ecm is for the car. The map sensor i have is ACDelco GM Original Equipment 213-4681 Multi-Purpose Pressure Sensor.

If you still have that sensor installed, then you need to change this right here

screenshot.17-10-2023 00.46.53.png

That's most likely your root cause. Essentially a 1 bar map in a 2 bar OS.

[blindsquirrel]

He's got it back to a 1-bar OS now.

I've run both ways, 2.5 bar MAP with 1 bar OS, and 1 bar MAP with 2 bar OS. As long as the linear/offset is correct for the sensor, and within the allowed limits, it just works.

[edcmat-l1]

He's got it back to a 1-bar OS now.

I've run both ways, 2.5 bar MAP with 1 bar OS, and 1 bar MAP with 2 bar OS. As long as the linear/offset is correct for the sensor, and within the allowed limits, it just works.

Yes I'm well aware how it works. That's why I quoted both your posts.

[blindsquirrel]

Essentially a 1 bar map in a 2 bar OS.

Then I think you meant 'a 1 bar MAP with the linear/offset of a 2 bar MAP'. I know you're no dummy, I was just trying to clarify things.

[edcmat-l1]

Then I think you meant 'a 1 bar MAP with the linear/offset of a 2 bar MAP'. I know you're no dummy, I was just trying to clarify things.

Second, the first question should be, what MAP sensor (part number, pic, etc.) is in the car? If you have a 1 bar sensor setup as a 2 bar in the tune, it'll cut the fueling in half. Kinda like what you probably got right now.

I thought I was pretty clear in my first post where I originally called it. Of course I know both are editable and you can run a different sensor in each by changing the linear and offset. That kinda goes without saying. Or so I thought.

And as long as we're trying to clarify, the E40 used a different MAP sensor. GEN3. The linear and offset are not the same as for that GEN4 sensor. So, even though he "put it back to stock" it may be close enough to start it but it's still not right.

[blindsquirrel]

Yep, got a few E40s here
normal.jpg

LSA-format MAP for E40 using MPXHZ6250A:
LSA 2.5bar.jpg