i really dont have the money for bigger injectors right now, so I was wonderin' if buyin a bigger fuel pump(walbro prob.) would solve my fuel deffciency problem and what size the 190 lph, 255 lph of 255hp, I also plan on juicin' in the spring....
or could i get my ecu "chipped" with a program with a richer fuel curve???

 

What makes you think you're running leaner and what's the correllation to the colder weather? You should probably run a fuel system cleaner through your car before you determine that hundred and multi-hundred dollar modifications are necessary. If you upgrade injectors, don't go too big and make sure you invest in a decent FPR to go along with it.

 

bcuz my plugs are white

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by deemack79 &raquo;</TD></TR><TR><TD CLASS="quote">bcuz my plugs are white</TD></TR></TABLE>

When its cold outside your ecu naturally advances timing. Try pulling 2 degrees out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by deemack79 &raquo;</TD></TR><TR><TD CLASS="quote">bcuz my plugs are white</TD></TR></TABLE>

they could be white for a number of reasons, but it's mostly from burning stuff like additives in your fuel etc or sometimes even oil. If it was lean the plugs would look very clean with the white insulator around the center electrode looking glazed. I doubt you need any of the stuff you were asking about even if you do decide to "juice it" next year..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic &raquo;</TD></TR><TR><TD CLASS="quote">

When its cold outside your ecu naturally advances timing. Try pulling 2 degrees out.</TD></TR></TABLE>

The ECU also automatically richens up the fuel curve to compensate for the colder air...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">

The ECU also automatically richens up the fuel curve to compensate for the colder air...
</TD></TR></TABLE>

Good call. Now I know why I gave you your title.

Well...i'm out of ideas

 

lol...I was wondering who gave me that....

 

thanx for ur input guys....finally a straight answer from someone who actually knows something..............

i guess that the whole additives in the fuel thing makes sense now, just never crossed my mind. its just that i had my motor built and the head flows like a ***** and since my fuel sys is stock besides a b&m reg. bumped up a few psi, i just thought that with the cold *** ny winters and subzero temps the the ecu wouldnt be able to compensate for that much cold air.....last yr a had my mechs. snap-on scanner hooked up and at 90 on the thruway the intake air temp was about 27 degrees.

 

If you're still concerned about your air/fuel ratio you could always stick it on the dyno or use a wideband O2 sensor to check it out. That will give you a clear picture of what's going on inside your engine and help you determine what, if any problem might exist with your fuel system and where. It might also be time for you to look into getting a VAFC or Hondata/Uberdata type of tuning device.

 

im gonna try to get to the dyno soon but its that time of year and the funds arent expendable like they usually are...