S13 sr20det lening out

[N1D]

I have a S13 sr20 in a 95 240, My problem is that it is leaning out wile driving at a steady rpm, and when I lift off the gas peddle it will read anywhere from 16 to 18. If I drive wide open throttler FR will be 12 to 11.
what I have done is installed a new nismo FRP, a 255 walbro, and a Z32 fuel fillter
I set FRP to factory spects.
SR is stock, only mods are 3 inch down pipe back, and front mount intercooler.

[ultimateirving]

Wot ur Fuel numbers are good. And are you saying on decel with the car in gear that it is reading 16-18? thats not cause for concern either.

[N1D]

Yes when its in gear. only sometime at idle dose the FR get all weird

[ShadowMan]

Is your BOV recirculated? If it's vented open and your keeping the throttle steady, then lean readings are expected because your BOV slowly bleeds off boost as it tries to maintain that steady speed/rpm. I would say as long as your accelerating and your AFR's are solid then you're probably o.k. That's my 'opinion' tho.

[N1D]

Put a new FRP on FR are good. fuel purse is high 50psi with vacuum line on is that safe?

[ShadowMan]

50 is a bit high. I forget exactly, so I'll have to check, but unplug the vacuum line, set it o 30 (i believe) then put the vacuum line back on. It should be around 32 to 34 psi. Also, you forgot to answer my question about whether or not your b.o.v. is recirculated or not.

[N1D]

Sorry yes it is recirculated. also do you think fuel purse could be high becuz not geting 12 volts to fuel pump?