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Anyway, more on that later. Doug and the team proceeded to fit the Milltek Sports CATs.. and transfer over the Bosch o2 lambda's etc. FINALLY . The RS4 B7 went back on the dyno / rolling road for the MRC Stage 2 Tune (was hoping for slightly better than the disappointing Baseline Stock Map of 377 PS)

Can't even make this up. Some unknown <beep> ECU tune and the kicker, Zinram Sports CATs that had been clogged up / falling apart, causing issues, literally soon after installation. After picking up the pieces of my disintegrated CAT (don't laugh) I had a chat with Doug. No point proceeding with the...

hhmm. Was rather disappointed with that, albeit stock - at least it now wasn't pulling timing at WOT! BUT. That was the least of my disappointment. During the run, I was outside and noticed, to my utter amazement, loads of bits of :dung: was flying out of the exhaust tips! I showed Doug the mess on ...

Doug Flashed Stock Audi RS4 maps onto the ECU's ..

another run ..

Baseline Stock Map:

Max Clutch Power : 377 PS
Max Clutch Torque : 391 Nm

Took the RS down to MRC. No mucking about - straight onto the Rolling Road. Few minutes later - Doug comes over "Your RS4 has been mapped previously" :shock: what?? ".. and it's pulling timing at the top end!" :shock: I honestly thought it was stock Audi map on there.. although, admittedly I did hav...

Running much better.. but again not quite right.. ok so, I'm kinda skipping over some weeks & months of frustrating on/off diagnostic testing which really gave me a bit of a ball ache.. and I don't want you bore you :sleeping_2: in the end I spoke with Doug @ MRC Tuning, regarding all I'd done and s...

So, after switching over the lambda connectors.. and few runs etc the RS was running much better , albeit still wasn't running quite right.. Next up, proceeded with HPFPs + cam followers installation: IMG_20250331_151430.jpg IMG_20250331_151810.jpg IMG_20250331_153731.jpg IMG_20250331_160715.jpg IMG...

Ensure the oxygen sensors are plugged into the correct connector for each bank/ecu and not switched over/mixed up If same Swap front o2 sensors left n right Could be faulty o2 sensor miss reading causing missfire on one bank getting around to updating this thread.. well Give the man a cigar :smile_...

hi Mate.. been a while since I've been on here. Right then, lets get down to brass tacks. Given the amount of work & effort you've put in recently into the RS - I could help (i've previously had this exact DTC on the vR6) - but can I give you another piece of advice? MRC Stage 2 You can then kiss go...

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)