on a cold crank it will start fine no problems but if I have been driving a while and say go get gas or go in a store....i come try to start and it is like im not getting fire it will turn but no fire... after a few tries it will finally start up ...any ideas i think it might just be to much fuel but any help will be great... here is turbo specs
Garrett T3/T04S 70 trim turbo, .82 A/R
Spearco Intercooler (26"x8.5"x3")
Tial 38mm wastegate
Deatschworks 660cc fuel injectors
SARD FPR
emanage blue

 

Check/change your ECTS

 

part of the problem when running big injectors, did you try to scale them down eventhou I don't think the blue can scale that much

almost willing to bet of you run 440cc injectors that problem will go away, unless your making so much power that you really need the 660's

btw, what is your fuel psi at idle

 

fuel pressure at idle is 21-22psi

 

change starter

 

WTF????


I have this issue also with my 555's.

 

Do you have an IACV?

 

Even without a iacv the car will start, he will have the feather the gas to keep it running at 1st and it may stall when at a light or with the a/c on but it will start

Like I said before its the injectors did you scale them with the blue

People have this problem all the time and just deal with it

 

do the fuel pump fuse pull trick and she will fire right up... i am pretty sure its your injectors, why so huge? how much power do you make?

 

LOL, I know a few local members who do the samething

knock on wood I havn't had this problem with my jwt ecu

 

+ 1 on the starter make sure its oem not cheap aftermarket i've gone thru 3 from advanced auto parts b4 i went oem.
also r u using the airflow map adjustment? -50 is the max the emanage blue will subtract n 660cc is more than double the size of the stock injectors , u can try using the before n after injectors size that automatically adjusts the voltage output for the maf but that never worked for me....lol

 

Switch to an AEM FIC Brandon or an emanage ultimate. But if it was running fine before it shouldn't be the tuning, it could be the ects as said or maybe just time for new plugs.

 

push button start fixed problem...but i do need to change plugs...what should i gap the plugs to?

 

Depends on your boost levels.
You want to go as wide was possible before experiencing blowout.
Start at .035 and see how that does.

 

Did you try what Kevlo suggested yet? I think its a good viable reason for our cars to be able to start fine when cold but have trouble starting when hot.

The ECT might be telling your ECU that its overheating while your other sensor for the gauge will be working fine and giving you the actual temp. But your ECT is saying something else.

Its like having two wives, one will contradict the other. But one wife has you by the ***** and the other has you by the mind. And since we listen to our manhood more than our brains, that is where we will struggle. So the ECTS is the ECU's younger, hotter, wife; while the gauge temp. sensor is the older, not so pretty, wife. And so the ECU listens to the ECTS without even considering what the gauge temp. sensor has to say and so to fix our problem we need to either listen to the other sensor or change the ECTS with a nicer and not blond ECTS who will love us, rather than tell us lies just to get our money.

 

The ECTS is known to cause starting issues when its bad, but with him running such large injectors Im betting its the culprit. Many others have experienced this as well, including myself and mine are 555's which are a bit smaller then his.

 

Not 100% on this - but when you start, the ecu does not use the MAF signal, instead it uses a set pulse width. So - when you put larger injectors in, you're going to be dumping in a whole lot more fuel during startup. If you get an emanage injector harness you can scale the injector pulsewidth rather than playing with the MAF signal.

I too sometimes have this issue and I only have 370cc injectors. I'm only using a SAFC though.

 

You can't take away fuel with the emanage blue injector harness. Matter of fact you cannot even put a negative value in the box on the additional injection map, the harness is to add pulsewidth/fuel only.

 

Really? well that's ****.

I guess an ecu upgrade is the only true fix for large injectors then?

 

No, emanage ulitmate can directly trim as well as aem fic without messing with maf voltage. You should be able to put the correction factor of 370cc->660cc in the blue and either slightly lower fuel pressure or do slight corrections on the airflow map.

 

I did have some starting issues when I had the A32 MAF and big injectors. I'm running the DW 555cc injectors with the 300ZX MAF now and it seems to have cured a lot of those issues. I'm not running any injector size correction on the emanage blue anymore like I used to with the A32 MAF. The DW 555cc+Z32 MAF will put you in a pretty good spot for further tuning without have having to use an injector correction value or MAF change value. Mine runs a little rich at idle when cold but I don't have any starting issues. Are you running a Z32 MAF?

Not entirely sure about the ECTS being the issue. As far as I'm aware, I have only seen this affect starting issues when the car is hot - as what has happened to me previously. The crank angle sensor is the one which affects starting when cold.

Is the ECU throwing any codes?