a lot of posts say that certain fmu's are 12:1 or how people should run 8:1 or whatever. all i know is that it means parts of fuel to air. is there a general principle on what ratio is good under what situations and whats considered hazardous under other circumstances?

 

a 12:1 fmu adds 12 pounds of fuel per pound of boost. tell us your current or planned setup so we can tell you what size fmu to get. generally if you are running stock injectors a 12:1 fmu is required. if you run 310cc injectors you can go 8:1. and so on.

 

im planning on just getting whatever the standard drag gen 3 kit comes w/ for a gsr.

 

I have a euro CRX turbo running 6PSI of boost, a 255lph fuel pump, B&M FPR, 450DSM injectors, what ratio should I be lookign to run?

This thing is running way to rich judging by the plugs and smell

I have a wideband sensor and reader but on idle the reading is all over the place.

Would people say those injectors are way too big? Any other suggestions?

Thanks

 

Chip your ECU and use Uberdata to tune, throw away that FMU

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by djnikko &raquo;</TD></TR><TR><TD CLASS="quote">I have a euro CRX turbo running 6PSI of boost, a 255lph fuel pump, B&M FPR, 450DSM injectors, what ratio should I be lookign to run?

This thing is running way to rich judging by the plugs and smell

I have a wideband sensor and reader but on idle the reading is all over the place.

Would people say those injectors are way too big? Any other suggestions?

Thanks </TD></TR></TABLE>

you dont run fmu's with 450cc's or bigger. fmu's add more fuel per pound of boost.

 

I dont have an FMU? Just a universal B&M fuel pressure regulator, is that the same? I thought there was a slight difference?

Now Ive cut up my stock fuel rail do I just buy another one or can it be used still?

Thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by elpiar &raquo;</TD></TR><TR><TD CLASS="quote">Chip your ECU and use Uberdata to tune, throw away that FMU</TD></TR></TABLE>

BEST advice in the thread!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by djnikko &raquo;</TD></TR><TR><TD CLASS="quote">I dont have an FMU? Just a universal B&M fuel pressure regulator, is that the same? I thought there was a slight difference?

Now Ive cut up my stock fuel rail do I just buy another one or can it be used still?

Thanks </TD></TR></TABLE>

http://home.mn.rr.com/keebler65/honda/

Go to that above site and read the part about chipping your ECU, then read the part about datalogging. Then go to the http://www.pgmfi.org forums and download Uberdata or Crome.