first off, i'm new to the whole tuning via crome thing so cut me a little slack here! I understand basicly what i have to do to make my changes & what not.

My setup:
RC 750's
Garrett T3/T4 .60/.63
b18a 81.5 bore
wiseco pistons 9.3:1
Eagle Rods
port & polished head
arp studs

basicly just a strenthened motor not sleeved

MY PROBLEM:

I've finally got the thing to start & rough idle & run but it's blowing black smoke out the exhaust & wideband reads at 10 after i start it up & let it run for a few min.

i've taken just bout all the fuel out of the idle area of the map (or at least what i think is the idle area of the map.)

Here's the map THUS Far:



Any help at all would be greatly appreciated

thanks in advance for your help

 

what's your fuel pressure at? with 750cc, mine is pressure is at 40psi. go to "ignition/fuel map", the furthest upper left corner should be around 1-2 milliseconds.

 

does this help?

 

are you running a ls on a vtec map?

 

yes because i didn't have anything else to start with.

I've disabled vtec & set the secondaries so high that i'll never hit the rpm.

comments / suggestions?

teach me!

 

Let's start with the basics :

1.) Use a p30 base for a map
2.) Do you have IAB's???

I can give you a basemap to start up your car on the 750's, but don't boost on it.

 

i've got it to the point where i can drive on it.. it's just extreamly rich & i'm pouring through fuel like crazy & i was trying to figure out why.. just kinda needing a little more help along to figure this out.

black smoke at idle is driving me nuts.. it's coz it's so damn rich & i just need to knwo what i should do with the maps.. i'm guessing i should turn down the injuctor pulses a lilttle, being that i've turned the duty cycle down to like 0

i haven't really been beating on it or anything.

 

You can drive on a F22 map if you really wanted but it would be crap.

Start over. Do a correct basemap and most of the time with CROME you need to add fuel unlike Uberdata where you need to subtract fuel (weird little querks of the programs).

 

not trying to scare you, but i noticed in the OP you've done internals, careful your not driving that car too too much if its super rich right, not good pratice for break in. you've defiently come to the right place for help tho ,my .02 only i'm hardly a tuner nor a builder gl with your setup

 

play with your fuel multiplier

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iBrandon &raquo;</TD></TR><TR><TD CLASS="quote">play with your fuel multiplier </TD></TR></TABLE>

Yeah I noticed that too....another one of the many problems with this map

 

on my built b16 with 750cc, my injectors are set at 1millisecond at idle.

 

here is some old **** i wrote a while back some might apply

1 make a basemap
2 make that base map rich as hell
3 start that base map and ensure its on the rich side after the engine has fully warmed up  important FULLY WARMED UP. Should be around 13’s
4 start data logging. Set it for logging 4% -100% throttle and 2,3,4 gears.
5 pull the car out and very easily start to drive. Good to have a buddy for this part but not necessary.
6 drive only concern yourself with reading you get with the throttle slightly pressed. If you can find a long gentle hill, that’s the best place to do this at. If your off the throttle your readings will immediately become lean that’s ok because there is no load on the car. If you start to see lean spots while your populating the cells in the data logger. Stop and richen up that Column. Don’t jab at the throttle as it will give false rich readings, nice and smooth.
7. I then open excel and copy and paste the boost tables into it. Then go back to crome and click “filter out statically unacceptable data” then click the “fill” then “auto adjust maps” finish with “smooth map” and then paste the boost tables back in from excel.

8 do the above a few times till your getting the AFR readings that you desire. Its going to the table kinda a mess, that’s ok go through it manually and clean it up. Use common sense, the higher the rev the more fuel you will need, the more load the more fuel you will need(for the most part).

Now look at your boost tables they should kinda be adding around 200 per cell as you go left to right starting from the last vacuum Column.

9 now time to hit the boost tables. Start data logging and do a first gear pull from 3000. stop if you go lean and dump fuel in that column and start again. As long as your under 12.5 I would keep pulling. I like to transition from 12.8 @ .4 to 11.8@ 5, but to each his own. Once you review your datalogg from that pull make any needed adjustments and try again. If good do a second and a third gear pull the taller the gear the more time the the ecu will draw data from one cell giving you a better point to base your decisions off of.

After you get to this point you should be good. See if IAC need adjusting from there. Timing is a another topic!

This is just what I do. It works well for me. I hope we talk more about tuning on this forum as I believe its one of the most mysterious things in the Honda world and those with knowledge are very slow to share.

 

heres some more old **** that might help

i did the default 120% and it was too lean. the short answer is you should not be playing if you don't have a wide band. here is what i did.
took the p30 map that comes with crome.
add boost tools+.
go into tools, boost table adjustments. take out 1* per pound of boost and add 120%fuel.
go into options, drop vtaak down to 5500rpm, dropped the rev limit down to 7911, disable every thing but coolant temp check, bring the rev limit up to 800rpm.
adjust fuel multipliers for the whole table, change injectors to 450cc
plugins, enhancements remove checksum, quick datalogger+rtp
file, save as whatever then close.
reopen what ever you saved it as
click on target afr and fill it in to your liking, mine goes from 14.70 at high vacuum to 11.5 at 7.5psi.
burn, install, start, look at your wide band, (if your me) realize its way too lean, turn off car immediately.
reopen and high light the entire fuel map and increase about two or three clicks on both high and low maps.
burn, install, start, much better datalog and adjust from there.

i have only worked on my car and only tuned my car there is a lot more to this than the very basic instruction above. there are people on here that have forgot more than i know. i have been reading this forum for at least a year and have read two huge book about tuning and still don't feel overly confident about tuning and would not think of tuning someone else’s car, but i also know its hard to find any kind of how-to on getting started. i would highly recommend having a qualified person tune your car on a dyno. good luck

 

This is the area that your car idles in. Decrease the amount of fuel in this part of the map, or your final multiplier until it idles decent. Try not to have any huge jumps in ignition timing in this area.
I would also check the ECT fuel compensation tables, maybe they're outta whack. Open a new p72 bin and cross referrence the ECT fuel compensation tables.
Make sure you are running closed loop (disable the o2 sensor in the options tab).
I would spend the $150 for cromepro, map trace alone is worth this money alone, nevermind datalogging right in crome. Also get a good datalogging setup (not some jank nokia cable) like a hondalog or hulog (worth the $30).