My car has some trouble starting, I need to start on WOT to rev to 2000rpm and let it go and stays on and idle fine.

If I don't go WOT turning it on, it idles low (600/800rpm) sometimes it turns off, or stays idling really low for a few seconds and then stabilizes. If it turns off and I turn it on again, I can see some black smoke.

Could it be too rich starting up? where can I lean this starting spot only?

I see some tables on fuel settings like cranking primer (first pulse), post primer enrichment 1,2,3,4,5,6. Or can I just lean the high and low octane fuel table on 500/1000 rpm?

Thanks for your help

 

What is your coolant temp

And Atmospheric temp

 

Coolant was 113F when getting out of work to come home and Ambient showed 107F

Seems normal, I've been monitoring coolant temp, ambient and Intake temp with my scan gauge and they seem normal, no problem there

 

If the car is tuned it might need some adjustments to the cranking injector pulse with for the high heat. Just a thought.

 

Or maybe idle air control step adjustment.

 

I just re read your post.

Maybe lower cranking primer

 

Um, do you have Cams? Parts list in relation would be good.

Your symptoms suggest yes. THe reason you have to go WOT is to add Air. It's struggling with possibly to much fuel currently.

 

what fuel, what injectors, what fuel pump and pressure regulator (what fuel pressure if not OE Reg). What intake, are you SD?

 

Car is tuned, via email from a reputable vendor a few years back

I already lowered cranking primer and same thing.

Car does have cams (GSC S2), Fuel pump is a walbro 255, injectors PTE 1200cc, stock fuel pressure regulator, stock MAF, intake and intercooler pipes are the injen kit, fuel is straight pump (95 oct here in Venezuela, that should be like a US 91 oct)

 

OK Put the cranking IPW to the stock settings then Multiply by 0.5
you want about half of the stock cranking IPW the injectors flow a little more than double stock but theyre latency is higher also.

for reference i tuned a car on DW 1200 and got
temp ms
-26 226.3
-0 108.1
18 46.4
45 17.3
68 15.4
93 12.4
122 6.7
171 3
180 2

it starts a little rich but, its very close.

these might be close enough for you to get somewhere, also if it starts easier with throttle then you need less fuel.

 

post primer enrichment is what id be adjusting

 

This is what I have in cranking primer:
102
68
41
35
30
10
4
2
1
1
1

If I copy and paste I get some different numbers

102.384
68.256
41.472
34.992
29.808
10.368
3.888
2.16
0.864
0.864
0.864

 

There are 6 post primer enrichment tables and 2 post primer enrich decay, what should I be changing?

 

im not too well versed with the evo 8 rom, but could you screenshot the tables and stock tables.

 

I dont have the stock one at the moment