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A puff of smoke is normal on a car with 80k and as well as PCV and turbo issues can be a sign of duff injectors and hpfp. You can chase your tail on this platform and still not find the issue. I would be tempted to wait and see how the problems develop.
My car is stumbling and misfiring at WOT. I have replaced the sparks and coils. Cleaned the vanos and the map sensor all to no avail. Terry (bms) thinks it may be the hpfp, others say injectors - more still carbon buildup.
I'll keep running it until I get a code or something craps out. You really could spend thousands and not get to the root of the problem!!
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Car: e91 330d with Viezu map
Gone but not forgotten: 2010 Jaguar XFR (Cat-back exhaust, pulley, intake mods and map), Highly Modified E90 335i LCI M Sport Manual (circa 480BHP/500lb ft)
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