I have a h22 crx, and after the dyno looking at my air/fuel it was at 10s past 4k rpm. What can I do to lean it out and how? I have a jdm h22 running a obd1 jdm p13 spoon chipped ecu, BandM FPR and gauge, 255 lph fuel pump. I an running about 45 psi full throttle according to the B and M gauge. Too much FP? go back to stock is what 35 psi? I also have a vafc 2 and wondering if there is anything I can do with that not familar with it at all just hooked it up and had a friend get me going on it. I did get the O2 sensor out of a junkyard and should I clean it? etc suggestions would be greatly appreciated. Need to get the bich lean. It ran 184 whp @ 6900 rpm and 158 ft lbs or torque @ 3200 rpm so I am thinkin more power if i can get it leaner. Also when I rebuild my header ports looked kinda too black for me and spark plugs I am guessing are black too need to take them out and see... TIA-John

 

Could be a faulty o2 sensor and combination of the ecu chip. Make sure your Aibs are working properly, if not then all 8 runners could be open during the lower rpms=more air=o2 sensor detecting this and inriching fuel mixture( I think they run rich as a failsafe is the o2 is faulty.

 

garuntee its that spoon chip...too bad you shelled out for it...see if you can pawn it to a rook along with the vfac and do a hondata or crome setup

 

yeah crome is in the near future kinda scared to take it to the track this weekend ill clean the plugs and lower the FP down to 35 psi. Spray some cleaner in it. Forgot to tell but on the dyno the air fuel ration was 10ssss 4k rpm up not good too rich...

 

is there anything I can do with the vafc 2 to correct anything? or find the problem?

 

also my car tends to bog not that bad but does it up steep hills if ur not on it and tends to cause the CEL code EGR could this also be a O2 sensor problem?

 

Lean out the mixture with the VAFC.

 

boggin sounds like clogged EGR ports, which could be from running rich. take off the EGR valve and spray some carb cleaner in there and see if it still bogs at all.

as for running, i think its your spoon chip. you could use the VAFC and lean it out across the entire range, but you would need to dyno tune it for that. and if you're gonna dyno tune the car, why not just wait for the crome?

 

hmm no way to lean it street wise and guess? just too difficult?

 

more like too dangerous...id stay safe and rich for now...

 

yep, lean=hot=melt=oh shiz

 

so 10s isnt something to worry bout across the board...just clean the EGR and engine with some carb cleaner and clean plugs? and lower psi down to 35-40 psi? Would like to take it to the track but if 10s are dangerous then I wont...I was kinda scared into recently that 10s too low?

 

10/1 af ratio would be still rich if your running 25 psi or someshit, not NA

 

Hmm okay here is the deal vtec no spudders right before vtec when up shifting but when I drop it down to 4th from 5th and get on it vtec will spudder real bad and will make a like electrical glitch noise right before vtec and lasts about 4 seconds and then vtec kicks in its like a bad delay a longated pre vtec noise sounds like vtec is hittin but delays for 4 seconds then goes. I am thinkin maybe my secondaries arent likeing opening when vtec engages? We played with the vafc last night and got more air into it but it seems it just spudders during or right before vtec delay. ???

 

your ecu is not tuned right. your spoon chip is telling vtec to kick in earlier than normal, but the ecu is not giving the right amount of feul/ignition for vtec to work properly. so you are not getting the right air/feul ratio and your ignition timing is probably off too. thats why these chips are crap, they tell vtec to kick in early but don't correct the feul and ignition to give vtec that kick we all love. you need to get crome asap and have it tuned.

and i still think that you boggin issue has to do with your EGR ports, but maybe i'm just paranoid cause mine has been giving me such trouble lately. either way, taking the EGR valve off and cleaning it is a easy 2 bolt/5 min project and it will seriously help your motor run better if they are a little backed up.

 

I think that may be the problem too vafc set at 5k rpm and the chip is 5500 so there is 2 things telling it what to do... so could explain not sure how to solve it and keep the vafc plugged in. Maybe set vtec for the spoon chips vtec engagement which is 5500....?

 

also my vafc been kinda wondering when to change vtec rpm there is the vtec and another setting my friend set it for a lower rpm of like 400 or so no sure why?