Sequential injection

[Dazza92VP]

ah yea its a 1001 as charlay said. sorry i thought i got a better shot of the board but was a bit blurry

[Dazza92VP]

has anyone done a compare between the vt and the vs 531 ecus to see what difference is between them see why the vs code wont work and vice a versa? or is it down to the cpu?

[The1]

ok did some more testing.

VT V6 N/A PCM 16233396 runs both VT V8 and VS V8 S3 code no problems, but when feeding cam signal it did not work, it seemed to see the signal but stayed in batch, also Code 48 was set Cam Signal input missing. So i removed both Q15, Q13 and put the 1001 or 1K resistor on the back, sequential is now working and no Code 48. I am talking to someone with this code 48 issue running VT V6 PCM so will send a modded one out to test to be 100% sure.

So thus far any VT Code inc S3 VS V8 will run on any VT PCM apart from hardware changes for V8. The only thing i can't answer is does VT Code run on a VS V8 S3 PCM. I can't see why not though.

VT Code will not run on a VS V6 PCM.

[antus]

Nice work! So if you wanted to run a v6 pcm with v8 code on a vt, and you didnt care about sequential you could mask code 48, or if you wanted sequential and to do a full conversion its as simple as 2 transistors off and a 1k resistor on. Great!

[The1]

yep that's correct, i will reply back to 100% confirm once the modded pcm is in vehicle and that it also is happy.

VS V8 S3 should also be able to use the VT PCM, it runs on the bench and has the same effect as VT, i dont know anyone with S3 VS V8 though to confirm though.

[Dylan]

Good work! Lots of knowledge gained here for everyone.
Thanks for your time

[charlay86]

So i removed both Q15, Q13 and put the 1001 or 1K resistor on the back.

Why was it necessary to remove those transistors?

[The1]

well i had erratic issue with the 2 extra injectors on E1 and E5 in seq mode but not batch, with the 2 extra components removed they were fine, the components are on those lines, im not good enough with electronics to figure out why they are there with v6 i guess it's causing another injector issue when used with v6's?

[charlay86]

They are the Boost control solenoid and fuel pump speed control output drivers for super6 or LPG enable and control outputs on regular V6. I would leave them in place, I think the issue may be caused by the diodes being configured differently.

diodes.PNG (1.07 MiB) Viewed 5477 times

[The1]

The factory V8 PCM doesn't have them, but all the IC's are there on the heatsink. I know holden did it the other way around on the VS V6 PCM, the N/A one had the Heatsinked IC removed and the S/C PCM had the IC there, the diodes were left the same. There must be a reason they changed it for VT. We'l see if any issues crop up in car with them removed, i can't see why you would leave them there on a V8?