Ok so 300 miles into a drive last night I tripped two codes P0503 and P1133

The 503 is what has me confused its something about VSS low signal??? What is going on there?

The 1133 I'm thinking might be because I have the ZZP midlength combo and 3inch catback its something about oxygen sensor inefficiency or something, I could always just kill it in HP tuners

Anyone have some insight here?

 

u have an aftermarket HU with GPS that is using the wire?

 

The speed sensor on the trans and the rear O2 sensor are on the same harness above the trans. The wires split just before the speed sensor. I just installed the Exedy Hyper Single in my son's balt last weekend and had to unplug both.

 

no, stock head unit

so maybe i pulled out the VSS?

 

Did you find the problem?

 

no i still have no idea whats wrong