JDM B16A SIR2, P30 ecu, i/h/e, test pipe.

I am getting 15-18 mpg aroud town right now, BUT i'm getting 35-37 mpg highway (cruising around 4K)??? So the poor gas mileage only occurs around town. My idle fuel pressure is right around 30 psi. There are no CEL's. I really don't know where to start, I'm going to replace the fuel filter and check that the fuel return line isn't pinched...but beyond that I need some reccomendations of what to look at...Thanks


Modified by ericl at 3:52 PM 11/20/2005

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ericl &raquo;</TD></TR><TR><TD CLASS="quote">JDM B16A SIR2, P30 ecu, i/h/e, test pipe.

I am getting 15-18 mpg aroud town right now, BUT i'm getting 35-37 mpg highway (cruising around 4K)??? So the poor gas mileage only occurs around town. My idle fuel pressure is right around 40 psi and the peak for WOT is around 75 psi. There are no CEL's. I really don't know where to start, I'm going to replace the fuel filter and check that the fuel return line isn't pinched...but beyond that I need some reccomendations of what to look at...Thanks</TD></TR></TABLE>

how is your driving style?
do some of the followings for better mpg.

Ground kit.
Seafoam
clean fuel injection / new sparks

 

I dont see how you have 40 psi at idle and 75 at wot

 

lol, sorry that was oil pressure the fuel pressure is around 30 psi at idle sorry...and i drive fairly conservativly with the occasional spirited drive...


Modified by ericl at 3:52 PM 11/20/2005

 

Anyone else have suggestions?

 

test your o2 sensor. it doesnt always throw a code. u also may want to check your fuel pressure regulator and map sensor.