Originally Posted by Jake18
im going to start by saying what ive been told then i need some feedback on what to do next. I was told that the cig/accy fuse also operated part of the ecm?
That fuse was blown at the time of the dyno.
I have since replaced the fuse with a higher 30 amp.
it doesnt control anything in the pcm... but you wont be able to connect to the pcm with a scanner if that fuse is blown... the pcm data port shares power with that fuse
Now that i can plug in the obd reader it says SECONDARY AIR which is the air pump?
ive also been told the air pump is an emissions device, but does it effect the power?
OR will replacing that fuse that supposedly also runs the ecm fix my air/fuel problems and loss of power problem?
this is all in question form and im only stating what has been told to me.
the Secondary Air pump is only active when the engine is cold...
above a certain temperature, it is shut off by the pcm...
it should not cause any differences on the dyno.
"to do next" would be to go back to the dyno
do pulls with the wideband in each exhaust pipe to see which one reads the richest, then check your HP/TQ Graphs... and decide if you want to spend thecash on a tune to re-dial the fuel and spark in to make the most power possible as your setup currently sits.