WTF is #11 ECU from? (See pic) Not 62, E5, etc

[COstyle]

I bought my car with a S13 Blacktop SR20DET in it but blew it up and I replaced it with a S13 Redtop. I Swapped over all the manifolds and sensors and its runs just fine but I never noticed until today I have a #11 ecu?! WTF is that from so I know what to set the output on my SAFC to?

I thought these were the only SR20DET ecus:
E5 is from a 94-96 180sx black top 5 speed
E6 is from a 94-96 180sx blacktop automatic
WC is from a 94-98 S14 Silvia
62 is from a 91-93 180sx or S13 Silvia 5 speed
61,63 is from a 91-93 180sx or S13 Silvia automatic
J4 is from a 97-98 180sx Type X 5speed

http://i99.photobucket.com/albums/l300/costyle13/DSC00529.jpg

[COstyle]

To answer my own question, stock SOHC KA24E ecu? Wow I guess they swapped the guts into that case or something? It is tuned for Z32 maf and 550s and runs great but I cant figure out what to set my SAFC setting at. 2in 5 out runs best I think. 2in 6out runs like total ass. Any insight anyone?

[punxva]

j/w do u have a picture of the old engine... im not doubting you, but are u sure the original engine wasnt a ka24e-t?

[COstyle]

lol no I assure you it was an SR. The car is a 90 so it was a SOHC at one time obviously but seriously how do you explain that?

[punxva]

was just wondering, thats kinda weird that they'd swap the ecu internals, its actually kinda strange if you ask me, but then again its a tuned ecu so it doesnt really matter