ECMlink Need help!! DSMlink PTE 1200 (Lucas 120LBS)

[eclipsyco]

Hey guys!
I will get a professional tune but the car barely runs. I know how to use the software I just don't know WTH is going on right now. I just need someone to pinpoint me in the right direction! Is this a mechanical fail or a tuning fail?

I BLT the car no boost leaks. I have a fuel pressure sensor logged in DSMLink, I'm using PTE1200 low z, 8an fuel lines, Walbro 400 fuel pump.

The car starts every time no problem but it randomly goes lean and dies. If I cruise some times specially after a stop it just jerks goes lean and then comes back. I'm trying to stay out of boost because the wideband says I'm lean most of the times even if I go on open loop. The log however shows that the it constantly try's to pull fuel away (STFT)

Before the PTE1200 I had some RC750 which I "tuned" myself and never had an issue.
So the only values in DSMLink I have messed with are InjbatteryAdj, global, and deadtime and yes I know my VE need clean up but I don't want to mess with that until I fix the fueling issue

I'll attach a 10min log
And thanks in advance!

 

[nice97civic]

Do you have a log from when it was running correctly? That may help.

 

[eclipsyco]

Do you have a log from when it was running correctly? That may help.

I might have some old logs when i was running the 750s I'll post as soon as I find them!

 

[d_oskim]

Is the log that you posted, a log with your current setup that you are having issues with? I am not seeing your Fuel Pressure Sensor or any stalling aside from when it goes rich at the end. Also the date on the log is from April of 2024.

 

[jed344]

Do you have a sheet for the INJ bat adjust or is that just your old values? The total dead time may be quite high. I have not tuned those exact injectors but i have 1250cc in the past. Sometimes when dead time is to high it also causes the SD table to be lower just off idle as it does effect just off idle to.

I see the car struggles to control idle and even as car rev's up and tps volts is correct and idle sw active. May have a sticky isc motor.

I see at the end of the log idling even though rpm is to high that fuel trims max out and front o2 and wide band both show its rich and car is pulling 16.8% of fuel.

I do not know if or what cam's are in the car but looking at vacuum i would guess stock or very close. The air flow per rev may be high at idle too but it does not control idle long enough to know for sure. When air flow per rev is high this 100% causes stalling issues. Stock cam's to mild .25-.27 is good. Even with very agressive cam's like GSC s3 i keep it under .35 or it starts causing issues.

My advise would be get the car to hold idle rpm and adjust SD table at idle area to have air flow per rev correct and it likely will want much less dead time too. This will likely fix any stalling issues.

I see you have secondary map's enabled and based off when and looking at the target map's the car has water meth injection? I like to make sure at peak tq 100VE i hit target air fuel by adjusting global fuel. I do this with injection off as i have seen it require different fueling. Essentially low boost safe timing to set global. Then later when injection active if needed apply secondary global on top. Just my personal way.

 

[eclipsyco]

Is the log that you posted, a log with your current setup that you are having issues with? I am not seeing your Fuel Pressure Sensor or any stalling aside from when it goes rich at the end. Also the date on the log is from April of 2024.

Yes you are right thats because stupid me forgot the laptop so i had to log in another one (old junk i had laying around) and didn't set it up properly.

 

[eclipsyco]

Do you have a sheet for the INJ bat adjust or is that just your old values? The total dead time may be quite high. I have not tuned those exact injectors but i have 1250cc in the past. Sometimes when dead time is to high it also causes the SD table to be lower just off idle as it does effect just off idle to.

I see the car struggles to control idle and even as car rev's up and tps volts is correct and idle sw active. May have a sticky isc motor.

I see at the end of the log idling even though rpm is to high that fuel trims max out and front o2 and wide band both show its rich and car is pulling 16.8% of fuel.

I do not know if or what cam's are in the car but looking at vacuum i would guess stock or very close. The air flow per rev may be high at idle too but it does not control idle long enough to know for sure. When air flow per rev is high this 100% causes stalling issues. Stock cam's to mild .25-.27 is good. Even with very agressive cam's like GSC s3 i keep it under .35 or it starts causing issues.

My advise would be get the car to hold idle rpm and adjust SD table at idle area to have air flow per rev correct and it likely will want much less dead time too. This will likely fix any stalling issues.

I see you have secondary map's enabled and based off when and looking at the target map's the car has water meth injection? I like to make sure at peak tq 100VE i hit target air fuel by adjusting global fuel. I do this with injection off as i have seen it require different fueling. Essentially low boost safe timing to set global. Then later when injection active if needed apply secondary global on top. Just my personal way.

Thanks for the reply man! I'll try to answer the best I can
Car has stock engine my bio is up date!
The INJBatAdj I got them from the forum where they claimed the values are straight from PTE!
I thing so too my deadtimes are way to high but if a lower it the car wont even idle (starts and dies)
I'll check the ISC I have a few spears to test as well
Yes I have water/meth injection currently due to different wastegate I'm only at 7 psi wastegate pressure so I'm not using right now I need to fix my fueling issue first car was at 24-26psi and the 750cc maxxed out.
I'll take your advice on the SD table I have time tomorrow to work on the car I'll update
thanks everyone