I just installed my perrin up and downpipes, but I keep blowing fuse SBF#5 (blew 4 already). I think it has something to do with the resistor for the uppipe. I have a cel fix for the downpipe so i don't think it's that. Don't really know if I installed the resistor correctly. I just put one end of the resistor into a hole in the EGT plug and the other end into the other hole. Could it be the EGT sensor? The way I installed it? The resistor? I have know idea what's going on and what i should do. Please help me out guys.

 

check to make sure your loom is not on a heat source,hence the shorting and blowing of fuses,hope this helps...

 

well, I am not sure what fuse SBF#5 is, but I can tell you that I do have the resister fix for my uppipe and a protune. All the resistor does is tell the ECU that the EGTs are at a constant 1275 degrees Fahrenheit. it should only connect to one side of the plug(that goes back to the ECU), not both male and female plugs(ECU and EGT sensor).

Since I don't know all of the symbols in a wiring schematic, I can't make a lot of sense from the Subaru wiring diagram.
Here is what is listed:



And here is what MB-9 connects to:

 

actually fixed it last week. the problem was the downpipe cel fix was smashed to the underneath of my car. thanks for the advice tho

 

wow mcdrama where did you get that?

 

I have PDFs of all the manuals for 02-04 wrx/sti.

 

w0w thats good stuff