What are these acronyms, abbreviations, and initialisms?

Markos

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AAV = Auxillary Air Valve (D-Jet component)
AFAIK = As Far As I Know
AFR = Air Fuel Ratio
AMP = Ampere
BAT = Batmobile, Bring A Trailer
B28 = M30B28 2.8L Six Cylinder (early)
B30 = M30B30 3.0L Six Cylinder (early)
B32 = M30B32 ~3.3L Six Cylinder (early/mid)
B34 = M30B32 ~3.5L Six Cylinder (mid)
B35 = M30B35 ~3.5L Six Cylinder (late)
BHCC = Beverly Hills Car Club, Used Cars
BSFC = Brake Specific Fuel Consumption
BTW = By The Way
CK = Coupe King, Well Known E9 Shop/Supplier
CPS = Crank Position Sensor
D-JET = Bosch D-Jetronic Engine Management
E3 = Platform Code for ‘68-‘76 BMW Sedans
E9 = Platform Code for ‘68-‘75 BMW Coupes
FAQ = Frequently Asked Questions
HP = Horsepower
IIRC = If I Recall Correctly
ISS = International Space Station
LED = Light Emitting Diode
LHD = Left Hand Drive
L-JET = Bosch L-Jetronic Engine Management
LSD = Limited Slip Differential
M30 = Engine Code for Legacy BMW six cyl.
M88 = 3.5L Six Cylinder 24v (euro only)
M90 = ~3.5L Six Cylinder (early, euro only)
MAF = Mass Airflow (Sensor)
MAP = Manifold Absolute Pressure (Sensor)
NLA = No Longer Available
NMNA = Not Mine Not Affliliated
NK = BMW Neu Klasse Manufacturing Era
NOS = New Old Stock (Old But Brand New)
NSFW = Not Safe For Work (Graphic)
O2 = Oxygen (Sensor)
OEM = Original Equipment Manufacturer
OMG = Oh My God
OP = Original Poster (Thread Starter)
PITA = Pain In The Arse
PO = Previous Owner
PS = Power Steering
LOL = Laughing Out Loud
RHD = Right Hand Drive
RTFF = Read The Friendly FAQ
S38 = S38B35/6/8 Six Cylinder 24v
TGTBT = Too Good To Be True
TLDR = Too Long Didn’t Read
TPS = Throttle Position Sensor
TTT = To The Top - Thread Bump
VSR1 = Well known NE E9 Shop
W&N = Walloth & Nesch parts supplier
WTF = What The Fudge
WYSIWYG = What You See Is What You Get
YMMV = Your Mileage May Vary

TBD...
 
Well done. I’d forgotten some and some are new to me.
I would add:

IMHO - In My Humble Opinion or just IMO if you’re not inclined to be humble…
CN - Carl Nelson, BMW guru from LaJolla Independent. I’ve seen his lowering springs referred to as “CN Springs”
FWIW- For What it’s Worth, also a Buffalo Springfield song IIRC, but I digress…
OKB - Okay Boomer (I think I just made that one up)

I only know LAN as Local Area Network. But WDIK?
 
I had only linked one LAN title but knew I’d seen others. Google AI solved it! When I searched “e9coupe.com LAN” to find another example, it spit out the following:
On the BMW E9 Coupe Discussion Forum, "LAN" is the signature tag or username prefix used by member deQuincey for comprehensive, hands-on restoration and DIY project threads.

That is actually correct! Turns out any of the LAN threads are ones filled with @deQuincey info and photos. No idea what it means but now I/we know
 
FPS = Fratelli Pedrini Sarezzo, the Italian wheel manufacturer of BMW alloy wheels.
They're just referred to as Pedrini wheels in the Porsche and Volkswagen world.

Jon B.
 
at Boeing, they had a multi page book to decipher acronyms
I knew that well - Some groups had internal crib sheets for their own use but BCA had a formal & maintained document (D6 version) that we used fairly often back when I was there. I figure that is still published. I probably had a copy I gave away when I retired..... (I gave away LOTS of stuff that I had collected... usually paper based as we used stone tablets and slide rules when I started working - LOL)
 
I knew that well - Some groups had internal crib sheets for their own use but BCA had a formal & maintained document (D6 version) that we used fairly often back when I was there. I figure that is still published. I probably had a copy I gave away when I retired..... (I gave away LOTS of stuff that I had collected... usually paper based as we used stone tablets and slide rules when I started working - LOL)
I was going to dm you and asked what you did at Boeing, but your profile won't do that, I worked a supplier, consultant to 35 years, only did Boeing work, as an industrial designer, worked on many things, probably the most 'high profile', I designed the marketing concept model for the 7E7
 
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