Based on the picture above do you guys think I'm running lean?

Its not exactly white but its not black either so I'm guessing I'm running too lean for forced induction. My question is if I'm running lean, what can I do to increase my fuel? I am running the Greddy Blue Box with RC 310 injectors that came with the kit. I rarely see this problem with Greddy kits. People usually complain that they run too rich (11:1). I believe the fuel filter was swapped out at the time of install so I think it eliminates that as the cause. I bought the fuel filter but didn't do the actual install myself. TIA.

 

What A/f are you running? if you don't know, why not hit a dyno and find out?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GraphiteAccord &raquo;</TD></TR><TR><TD CLASS="quote">What A/f are you running? if you don't know, why not hit a dyno and find out?</TD></TR></TABLE>

I'm not sure what A/F I'm running. I know I should hit the dyno but just haven't had time to do anything with the car since install.

When your A/F is read on the dyno do you have to already own a wideband? Sorry stupid question but I'm sure its an easy one for you guys.

 

Thats about what my plugs look like on my almost bones stock SI. (intake, header)

 

did you take the plugs out IMMEDIATELY after a full boost run?

what it looks like is the engine is generally running lean, but after the car idles with a good mixture, the porcelain cleans itself off...

you need to get a wideband or spend some time on a dyno to know for sure.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lazerus &raquo;</TD></TR><TR><TD CLASS="quote">did you take the plugs out IMMEDIATELY after a full boost run?

what it looks like is the engine is generally running lean, but after the car idles with a good mixture, the porcelain cleans itself off...

you need to get a wideband or spend some time on a dyno to know for sure.</TD></TR></TABLE>

I took out the plugs after I boosted on the main street. I drove 1/2 mile then shut off the car immediately. If it is running lean what can I do to increase fuel with the Greddy blue box? Can I add a 4:1 FMU?

 

i heard that is hard to determine if its rich or lean by looking at the plugs. i suggest dyno tunning
My car had white plugs but was running hella rich

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lazerus &raquo;</TD></TR><TR><TD CLASS="quote">did you take the plugs out IMMEDIATELY after a full boost run?

what it looks like is the engine is generally running lean, but after the car idles with a good mixture, the porcelain cleans itself off...

you need to get a wideband or spend some time on a dyno to know for sure.</TD></TR></TABLE>

Lazarus, what is a good Idle mixture exactly? Around 14-15? Also how will running an afc hack at -25 idle affect how my plugs look? They look kinda like these but it runs very rich under boost, based on smell, smoke and afc #s.

 

ack
14-15 =way to lean

 

for idle it shouldn't be too lean (14-15). As rpms increase and boost pressure rises...thats when it should lowerdrastically.

 

usually on AEM/standalone based setups with a wideband, i like to tune to around 14.7:1 AFR at idle under no load, and then when the A/c kicks on, i try and bump it down a little bit to like 14.0-14.4 to help maintain a smoother idle...

but the ECU will try to idle it at (i belive) 14.7.. Im not real familiar (ok not at all) with honda ECU's, and typically the stock ECU has correction limits (closed loop) and if you get the AFC within those limits, it will automatically adjust to help idle at stoich.

For tuning i would seriously recommend some dyno time with wideband (using a welded bung in the downpipe) or borrowing a friends wideband setup for a few days to get it tuned satisfactory (especially under boost).

Brad

also, in my post earlier i meant to say GENERALLY RUNNING RICH! But i was in a hurry to post, sorry for any confusion.