Yeah seemed fine, although it unplugged pretty easilyWas you vacuum hose on that sensor conmected well at both ends and in good condition? Mine had expanded and kept falling off
ah that point I may as well clean the throttle body and replace gasket jic that was an issue.
How can he overwrite the ecu. Very interesting. 4.2 has a different fuel supply system.I was speaking to a lpg dude today about the setup. the multivalve is defo dead hence why it won't take anymore lpg. he also came across another one like it before because the pump is constantly running even on lpg he adds his own return line for the petrol.
also he would add and AC stag ecu to swap out the BRC one and service the whole setup and replace the fuel pump for 550-600 quid.
my main question is anyone seen is return line mod done before for this car?
well hopefully he just needs to add a pressure release t junction. so any excess pressure gets routed back.My guy has had to put the return in - he reckons the 2005-2006 l320 and l322 4.2 he can use an emulator to trick the main ecu into thinking it’s running but 2007 on it doesn’t work and need the return.
there is a bodge you can do which is what was done on my m6 as the emulator didn’t work and the return could never manage the precise pressure it needed - you can swap one (maybe 2) of the cylinders (if 2 1 per bank) to run on petrol while the rest of the system is on gas. Mine ran like this ok for the last 9 years on my m6 - and when he realised the emulator didn’t work we did the same so I could use it until the return was fitted in the 4.2 which ran fine