Have you checked the little hose that goes to the fuel pressure switch? On the top of the charger diagonally facing the passenger seat?
I know three of these where off Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

small update. the maf came today. sprayed with lots of contact cleaner and in she went. started car, nothing seemed out of ordinary. went for a drive, because am a moron i forgot my GAP tool came today so missed my delivery.

But weird thing, my two pending lean codes for bank 1-2 disappeared. Well first bank 2 went, then after stopping off at coop bank 1 also went away.

so ive topped up about 40 litres in there, ill see how it goes but so far so good

where did you spray the contact cleaner you shouldn't have had to put any on a brand new Maf....

Did you get the genuine denso one?

If that's made it better then do the o2s as that combo was my problem and they were the icing on the cake... Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

Yeah was a genuine denso one, i didnt wanna take any chances haha. but i noticed one of the screws wasnt tightening so maybe it wont make a decent seal

its it down atm, i wanna see if the maf makes it go away, and then do the o2s anyway

good stuff so its better than the Delphi you had? (I think you said that) what did you need the spray for then? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

i didnt even have delphi, just generic one with no text at all. so not sure what it is, some chinese crap am willing to guess.

i sprayed cause it was raining when i was fitting it and i put it down so i didnt wanna risk any dust

Fair enough - how is it going? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

so far...no codes. getting 11.6mpg instead of my usual 9mpg.

am just worried that the new maf forced a reset of the adaptations and its just going to throw codes around the 40-50 mile mark. but so far so good. literally no issues at all.

my plan is to get my gap tool monday. reset the adaptations anyway. allow them to relearn with the usual 40-50 miles.

then after that install new o2 sensors and attempt to change the broken coil and then full service, oil filter, oil, air filter etc etc. only thing left out is new plugs since i already did em. i need to do 1 new plug for the one i didn't change due to the stuck coil boot

run that for a couple of weeks, then go to lpg dude, get the new reducer and injectors installed. while all the bits and bobs are off, change out the valve cover gaskets. then get the engine steam cleaned so i can find out if there's any more oil leaks.

then she's ready, mechanically the car will be sound since only last year i got a double flush of autobox and diff fluid changed out. couple that with basically a full engine rebuild, and recently i did the ARC pipes. i may do the rear ones if i have time but so far they aint leaking

How are you doing did me rear o2s didn’t make much difference really but glad I’m done with them.


Still having a few lpg issues do you know what make your kit is? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

No lean codes.

The 02 sensors, aren't the rear ones post cat? Cause I assume the front ones are precat? Since they are a massive ballache to get to.

Am still getting misfires on cylinder 1. Thanks to gap iid tool I can view it in real time.

I'll swap ignition coils next time I get a chance but so far no more codes at all.

The lpg issues will go away with a proper calibration. It's because before it was calibrated with bad fuel trims so it'd be copying a broken petrol fuel trim.

I'll be going to lpg dude next week to fit new injectors and Magic Jet 3 power reducer. That'll sort my problems

I thought you had bought new coils for all?

Just wondered what make you mr kit was?

I had done the pita front sensors but wanted to do the backs as a preventative measure... Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

Nah new plugs.

Ac stag ecu, I can't remember injectors and kme extreme reducer(avoid this at all costs, constant pressure drops at high rpms)

When you say high how high? I was told they are so thirsty that around 3-4K you needed to blend petrol on most kits Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

Around there. But dudes pretty certain he did another 4.2sc with magic reducers and had the entire rev range working smoothly. He showed me the pics of him installing the fuel return line and all. So worth a cheeky pint. Plus when we're drilling bigger injector holes ama change the valve cover gasket. If it doesn't work I've got cable for software and can start tuning in the petrol

My fitter reckons the only reducer that holds on all the way is the Prins one... tbh though if they blending works well it doesn’t use loads of petrol Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF