I got the iac all hooked up before finding out the valve has seized up- obviously from sitting around too long… I put in an order for a cheap replacement so waiting for that before I continue. The vacuum leak from it being seized open did seem to help with my cold start issue though! 😂 just no retur...

Pic of modified IAC fitting and engine bay pic.

Just need the air line fittings and some hose now to plumb up then reconnect the iac sensor wires

So this is what i am planning to rectify now - i didnt initially set it up as the Rover IAC Valve is on the back of the Plenum which interferes with a cowling, whereas the GM IAC valves arent remote mountable... To address this, i cut up an old VS throttle body to remove the IAC plumbing and IAC Val...

So i had another go today, i seem to have solved the issue with the wideband jumping around too much, by installing a noise suppressor to the wideband supply power as it is powered off the fuel pump relay (to prevent the wideband heating when engine isnt running). The signal is a lot more stable now...

I had a fiddle today, after a few setbacks I did a clean install of the bin back to ose$12, reinstalled the nvram and made only a few changes to the fuel flow scalar (back to 0.0399) and ensured the fan switched on to keep temps ok while I idled. I adjusted the cranking tables by the same amount (di...

Thanks antus! Very helpful tips! I have checked a few of these points previously but will go over them again to ensure I didn’t miss anything. The stage 1 and 2 tables - what are the difference between them? I’m sure this is where I will see the most gains so look forward to checking them out. Thank...

This is an old pic, will get some engine photos up soon!

I have been off this project for a while (family life!) but keen to get some more progress now! Just hopped back in the car and got the battery charged again so can start all over again! One of the issues I have had the whole time is the cold start - I didn’t really raise the issue as I just limped ...

yep looks like youre right - managed to find the newer adx OSE_12P_V112 and that worked straight up!

finally making progress!

ill check the xdf, but happy that things are working now!
thanks again!

see attachment for detail