Sorry to bring this back up, but I can't seem to get my car running as good as it should be. It's running rich everywhere and I"m curious as to what other people are doing with 42 lb injectors. I've changed the bpc vs egr to .56 instead of .62 since I'm using ford injectors in my bird, and changed accel enrichment down to 300 across the board, and it's still running rich. Just missed the woodward cruise for this stupid problem.

pj

 

Try using a smaller BPC.
I'm not using TC, so I can't tell you what mine work out to (60PPH), but that .56 would seem large, IMO.

PPPPPP

 

.056 I meant. Yeah, .56 would be very large! I will try and go lower then that, see what happens.


pj

 

According to the 747's BPC calculation (assuming that's applicable), you should have a constant of 43 decimal. This would be a value of approximately 0.015 in the editor.

Of course, this assumes the calculation is valid for the 749 and your editor has the same scaling as I've used above. If all else fails, you should be able to use a hex editor and modify the memory location directly.

 

I am still running rich with my 42# ford inj. but, not that rich? what tunner cat ($58 or $58B) are you using? I know they changed some of the cal. to help in the v8 applications. after the last update it now shows (7.03 gal/hr for injector rate)
I had also changed my AE to 300 and found it to be pretty close(a little bit over rich even for a boosted car)
I am more concerned about my cruise fueling first.

 

While the calibration area shows a Inj rate, it's not used in the fuel calculation. You want BPC vs EGR to compensate for different injector sizing.

 

why does it run so close? it shows .09 right now? I would think I would be way off? just getting more confused again!

 

I'am using the ford green top 42Ibs injectors and in promgrammer I have bpc vs egr set at .71 across the board for my 5.7L engine if that helps any.

 

The green tops are 42's?? .. (writes that down). I'll be hunting for those this fall.

-- Joe

 

i made a BPC calc, its on moats site.



stock is 37/+-3 psi.
305(3.48,3.74)

-=BPC=-
Tunerpro - 88.35
PromGrammer - .060

by my calc.

running stock fuel psi?

 

Calc won't run on win2k for me. Complains about "mscoree.dll" not being found.

-- Joe

 

Tony89gta, which program are you using to set the field?

Also, .015, could try the low end of the scale, which program would this be in? Programmer I'm assuming.

Also, tony89gta, did you change any other of the fuel adding tables, ae enrichment, pe, etc to compensate for the bigger injectors? or was the bpc vs egr and the AE % good enough? Thanks for the responses guys.

pj

 

Here's the link to Promgrammer, it's in the middle of the page. http://www.sytyauthority.net/ it cost like 10 bucks if you want the newest updated version but this one will do.

I did have to change in Cats the table Accel Enrichment Multiplier Vs RPM, what did was just cut all values in half, it's not perfect but it worked, runs a lot better now.

 

Really should start fresh with $60. The source is very well commented, and if your not into source, I've extensively used the tunercat TDF for it (which is free btw, thanks to TC) and that works well.

And, $60 is 32k so now playing around.

-- Joe

 

do you have .net installed?
if not *Here*

 

Tunercat has a tdf for the $60? when did that happen and how do I sign up?

 

Contact Grumpy..

-- Joe