I have a code 7, its the atmospheric pressure sensor. My setup is a 92 B18A in a 91 Crx SI(everything converted to non-obd). My question is, will this affect my mileage??? It might just be me, but it seems like my car is killing a lot of gas.

Also, I need to know where the red/wht wire goes, to what pin location on the ECU. I know the grn/wht goes to C12 and yel/wht goes to C13.

 

How did you get these extra wires???? You shouldn't have had to mess with the interior wiring harness that much, i don't think. If you got an Si you already had DPI and all ur distributor sensors wired. Oh, well we'll see. I'm pretty sure pin C12 is the second sensor ground (SG2) so basically it just grounds off a few of the main sensors. I really don't know how good ur car is running if you don't have C13 going anywhere because i know that that is TPS voltage+ (VCC2). Check these, and then let us know what is going on more. Laterz