Sooooo I have a turbo hear and since it's been ages since I've seen a s4/s5 turbo in person, I'm not exactly sure if this is stock. Can get pics of whatever needed to help figure this out. Haven't pulled it apart, really i'm more concerned with whether or not it's stock. With that said:

Exh inlet is divided. Very few markings on compressor housing, there's a barb where the number for the A/R was. Near the compressor outlet it say 100-6-9 and m24. On the back of the compressor housing it says 104247. Inner diameter of the compressor inlet is ~2.5". Outer is ~2.75". Inside of the compressor outlet ".70" is stamped. Sorry for the little amount of information, LMK if there's anything useful I can provide, hopefully without having to pull this bitch apart lol.
TIA

 

no stock turbo has a 0.70 front compressor housing

the stock is marked HT18S-2S on the compressor housing
both are divided entry,, the s4 one having an uneven shaped 4 bolt flange and having one turbine scroll runner much smaller than the other

stock turbo is also water cooled, and the presence of a stock type core with a 0.70 front maybe some version of large highflow

if its all oil cooled then you have some t04 or something ,, and we need pics and compressor inducer and exducer diameter to judge

 

My gues then is it's some version of an s5 hiflow. Divided entry has the same size ports. It is both water an oil cooled. Since the inner dia of the inlet is 2.5, inducer would be roughly that right? I will pull it apart asap and get a real ind/exd measurement.

 

I've never seen a hybrid with a .70 housing. that thing must have some uncontrollable boost issues.

 

IDK? It came with some other **** I bought. .70 is stamped inside the actual compressor outlet. It says "AR" on the outside, but where the numbers would be theres a vacuum nipple