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Currently, my work-stack is such that I won't get around to installing and testing the above for a little while.. But I'm fairly confident when I do, install of the above will address the Issues experienced: -Multiple Misfires -Hesitation / jerky whilst accelerating from stand-still -Sometimes stall...

Parts Ordered:

2x OE Hitachi HPFPs
2x OE Cam Follower / Tappets
6x Hex Bolts
2x Seal plugs / bolts
2x Washer rings

The part numbers are listed in the diagram below, for your benefit:

ok - so the HPFP parts have arrived:

Still love driving this, but wondering if I should sell it.......... After all the nice work you've done to it - have to ask why.. ? Are the maintenance costs a factor? But, particularly when current 2nd hand car prices (well B7 RS4's) seem to have taken a little hit .. and a V8 manual that drives ...

oh I agree it's been a quite a journey with this car (bleeding the clutch comes immediately to mind ) - but I'm a tenacious-petrolhead-sob

(as long as there's a good supply of decent Weissbier to cope with my frequent mood swings)

I understand the temptation to blame the new o2 sensors for causing the multiple misfires across Bank 1 - I immediately did. But the o2 lambda sensors have heating elements in them to get them up to temp very quickly in order to get the car running from open-loop to closed-loop operation. Driving th...

[a few decent Weissbier later.. -works wonders] ok, so we can see it's clear the Misfire's are isolated to and occurring across all Bank 1 cylinders 1-4 now. Immediate thought was likely a faulty o2 sensor (even though they're all new) , o2 reading false air, exhaust leak, improperly sealed DP flang...

right ok, once I've calmed down .. and cracked open a beer

I'll return with my Jerry Springer style, Final Thought

Wow. I gotta tell you it now runs like .... :assflash: :dung: Engine properly mis-firing.. emission warning light [yellow engine icon] flashing at me non-stop during test-drive Here's the DTC's for your amusement: Address 11: Engine II Labels: 079-910-560-BNS2.lbl 5 Faults Found: 000768 - Random/Mul...

New Bosch OE Lambda sensors Fitted:

Fitted & Coupled to existing Milltek non-res Valved Cat-back exhaust system:

well, the saga continues.. seems to be one step forward , two steps back at the mo :piss: Did some runs, and definitely there was some pull-back / lag / rev-limiter going on at WOT ~ 6500rpm :audibash: In a bid to save your's and what little sanity I have remaining (from trying to decipher more & mo...

Obviously, the goal here is achieve as close as possible to 0% Fuel Trims , across both Banks during both idle and partial (under load). Interestingly, under Idle conditions at ~ 0.6% and ~0.1% respectively for both Banks, readings appear not too bad.. and it's important to remember that any Vacuum ...

So, thinking about it some more.... Readiness monitors are set by a procedure known as a Drive Cycle, which involves typical few days of normal town/city and motorway driving conditions to properly "test" ALL the systems. Maybe in my haste, the RS requires a few more days of driving before it will s...

As a result - I have a feeling the o2 Lambda sensors could well be sooted-up, thus misreading the exhaust gases correctly as they pass.. subsequently in turn, reporting erroneous (garbage) data back up to the ECU's... obviously affecting the Fuel Trims across both-banks. It's a possibility. - consid...

So, when we first got the RS - I do recall the Exhaust Tips had a proper 'soot like' coating - on the Milltek cat-back which had only been fitted few years earlier. This, typically being an indication of excessively burning fuel, where the engine's air/fuel mixture is too rich. The fuel that isn't b...