Trip

moving back to subject.

Although i am running with a 7psi pulley, I am still running way too lean, I am also assuming that even if i had the standary pulley 5.5), i will be still running lean.

Could it be i have some vacuum leak and the fpr is seeing less boost ?

My boost sensor is connected on the same vacuum hose the FPR is connected to and i am seeing between 6.9-7.1psi at 9000rpm.

xviper

I suppose your boost gauge could be inaccurate. Some have said that the line going to the FPR should be dedicated only for that function and not shared with any other device, like a gauge or the relief valve. If the connections seem loose, use zip ties.
How are you measuring a/f?

Trip

i have zip tied the hoses. I will eliminate the boost sensor and connect the FPR direct to the manifold.
My A/F is measured with a Zeitronics data logger http://www.zeitronix.com/

xviper

OK, just curious if it was a wideband with its own O2 or if it was interpretting the OEM sensor or if it was a probe up the tailpipe.
Is the wideband sensor mounted in the header?

Trip

Yes, I have a Bosch Wideband 02 sensor connected instead of the Primary 02, The datalogger feeds the ECU with a narow band signal and i have put a resistor instead of the "02 heater".