ECMlink 97 Eclipse GST Speed density rough idle till warm

[michael_b81]

I have a 97 Eclipse GST with ECMLink
My build
Evo 3 manifold
3in exhaust
Forced Performance turbo 16g
190 fuel pump
Stock 1g fuel injectors
Front mount intercooler

I swapped back to speed density and at a cold start it idles rough or it will idle up then die until closed loop has a 1 beside it and it runs fine.

I have read a lot I might be over looking something something

 

[99dsmer4g63]

Post a log for the people to see.

-Daniel

 

[michael_b81]

Post a log for the people to see.

-Daniel

Working on that now

 

[michael_b81]

sorry the log i work a lot im just now getting to it. I know i got to clean up my graph

 

[Stapl3]

Does this car have an adjustable fuel pressure regulator?

The ECU is trying to add a TON of fuel.

 

[CanadianTalonTC]

Why are you running your omni 4 bar off BARO? Is it not hooked to the factory MDP spot?

Your knock retard CEL is also quite high at 5, 234 coolant temp CEL is high as well.

Not much to comment on anything besides it's trying to add a ton of fuel. What does your wideband say? Seems I can't view it on the log.

Might not be a bad idea to fill out your profile as detailed as possible for mods.

 

[michael_b81]

Does this car have an adjustable fuel pressure regulator?

The ECU is trying to add a TON of fuel.

No it dose not

Why are you running your omni 4 bar off BARO? Is it not hooked to the factory MDP spot?

My 4 bar I got from ECMLink and I got there plug and play cord and it said to set it to BARO

 

[CanadianTalonTC]

My 4 bar I got from ECMLink and I got there plug and play cord and it said to set it to BARO

Need the rest of the answers to those questions before we can proceed.

 

[We're on Boost]

until closed loop has a 1 beside it and it runs fine.

Just for a quick and easy test without changing any hardware, you could try putting a big number like 800 microseconds into your global deadtime field. Right now you have a 0 in there. 800 would increase your fuel at idle by about 33% (noticing your usual Inj On time is about 2.40 milliseconds in closed loop idle). It would increase your fuel at higher loads too but by decreasing percent as load goes up. It would act kind of like the idle mixture screw on old small engines with carburetors which used to have such things.

You've probably got something else actually wrong but this test would be easy to do and easy to undo and it might tell us something worth knowing.
I'd be interested in seeing if it would lift your Front O2 voltage up from practically 0 to where it should be, which is from a cold start, it should go up gradually to over 0.5 volts and then start cycling up and down. Yours starts to do something like that at coolant temp 120 degrees F but then it kind of poops out and just lays there near the bottom, which should mean the engine is running way lean even with that +29% that the Combined Fuel Trims are adding.
So I would try the 800 microseconds, see if it runs better or worse, and see how it effects the log of Front O2 voltage.

Also, in your Enabled DTC Checks you don't have a check in the box for Cat efficiency/O2. Shouldn't that be checked? We really need to have a DTC check on the Front O2. The help balloon on that item says "If checked, will enable diagnostics related to front and rear O2 sensor operation".

 

[michael_b81]

Just for a quick and easy test without changing any hardware, you could try putting a big number like 800 microseconds into your global deadtime field. Right now you have a 0 in there. 800 would increase your fuel at idle by about 33% (noticing your usual Inj On time is about 2.40 milliseconds in closed loop idle). It would increase your fuel at higher loads too but by decreasing percent as load goes up. It would act kind of like the idle mixture screw on old small engines with carburetors which used to have such things.

You've probably got something else actually wrong but this test would be easy to do and easy to undo and it might tell us something worth knowing.
I'd be interested in seeing if it would lift your Front O2 voltage up from practically 0 to where it should be, which is from a cold start, it should go up gradually to over 0.5 volts and then start cycling up and down. Yours starts to do something like that at coolant temp 120 degrees F but then it kind of poops out and just lays there near the bottom, which should mean the engine is running way lean even with that +29% that the Combined Fuel Trims are adding.
So I would try the 800 microseconds, see if it runs better or worse, and see how it effects the log of Front O2 voltage.

Also, in your Enabled DTC Checks you don't have a check in the box for Cat efficiency/O2. Shouldn't that be checked? We really need to have a DTC check on the Front O2. The help balloon on that item says "If checked, will enable diagnostics related to front and rear O2 sensor operation".

Thank you for your response. I put 800 in to the deadtime and it starts right up and idle great. I also had to get a new front o2 I have no o2 at the cat hell there’s no cat that why threres check so it won’t throw I code for the o2. I’m going to post a new log