I have a Greddy kit for the 99-00 SI running @ 5.5psi intercooled. Running NGK BKR7E Plugs gapped @ .030... Would a different gap help? Have had the kit on for 3000 miles, and has been misifiring in all cylinders more frequently lately. Timing is set 1 degree below stock. Do other Greddy B series guys experience random misfiring w/ the blue box? or is it just me? Please let me know your experiences. Thanks.

 

i had the same problem for my '00 si. code 71,72,73,74. i rechecked my wiring and checked for any leaks or anything. i couldn't find anything too. I then threw the box and put in a hondata and all misfiring went away.

 

HEY BRO DONT FEEL BAD , I HAVE YOUR SAME SET UP 6PSI BLUE BOX ON MY SI
AND THIS STUPID P300 MISFIRE CAME ON TOO. I CANT WAIT FOR HONDATA

 

Cool, even when it throws the code.... the car drives fine.. weird.

 

Also, it only happens @ idle.... rarely when driving in vaccumm while accelerating, but never @ WOT. Any other ideas? Would a Walbro pump help. I did notice however when i retarded the timing 3 degrees, it did not throw this code, however it would overheat more often. What timing are you guys running @ 5.5psi?

 

nope running a Walbro pump will not help
the only thing i've seen help is taking out the blue box injectors and running the stock injectors with an FMU setup & a missing link
or Hondata

 

check your gap. set it to .28 and that should help.
are you running stock plugs. try 1 notch colder.

platinum.

 

I'm using NGK BKR7E Gapped @ .030 I'll try .028 gap, thanks.

 

****, my car is running so rich that burn my o2 sensor. wtf

 

also have 99-00si greddy kit, I went with colder NGK plugs no missfires but car idles low, can't seem to get it to idle steady enuff to set the timming on it.

 

hrm,

Spooned Out - What kind of gap are you running on your plugs?

 

the gap i was told is allready set when you buy them new from NGK so i just threw it in, no missfires but im running really lean for somereason (no good)