Originally Posted by
velociabstract
Stock rail, stock pump, stock injectors, almost stock power with this retune. I may have picked up some air in the fuel lines as I was running the car near empty but I've seen spikes before. I forgot to log all my runs so I'm not sure. Note to self, write down everything as close to real time as possible! A fuel pressure gauge at the rail is coming soon. At my power levels and boost levels no one believes I'm running out of fuel .... unless the fuel pump is going out.
Les
unless you loop the rail the pressure readings will be inaccurate les. when i had a oem rail i read 57 psi at the schrader valve. then i looped the rail and read 55psi showing a 2 psi drop or rather a true reading as the flow is equalized. when i stacked the pulleys i went to 50 psi at wot showing the pump is dropping pressure due to demand from the injectors. without looping the rail the pressure reading would stay the same as the reading is at the end of the wall so to speak.
im dropping 6* of timing during my 1/4 mile runs due to high iat temps. 160* iat the ecu is shutting me down