I have a 02 WRX and been having major lean issues with it. When I drive it, its only like i got 1/4 throttle. After 3500 rpms and starts boosting it jumps really lean. It will also start detonating on higher rpms. I have changed the fuel pump, fuel filter, O2 sensor, and plugs. I also put the stock airbox and BOV back on to see if that would help. No help.
Well i logged what i could with my scanner(i know it isn't much). Here are the stats:
TPS% - 100
Eng Speed - 5009
Calc load - 67.9
Maf flow - 124.85 g/s
MAP kpa - 162
Iat deg. - 73
IGN advance - 9.0
This was the highest of my run due to traffic..
Can anyone say for certain that is the problem.. I am pretty certain that is the problem. Would just like to know for sure