ECMlink New Motor, New Setup, New Tuning Issues

[TNOMUD]

I will keep it simple here.

Car: 92 AWD Talon

Vehicle was a Stock bottm, 550's, HKS cams, 2GMAF, 3TB, 255, FMIC, V3.24.70 Car. Car always ran great, no issues until I spun a bearing.


New Setup:

Stock Block, removed balance shafts, head ported, Wisecos, Manleys, 255 in tank pump, 450 Main pump, Speed Density, FMIC, Cams, Turbonetics 60-1, about 10/1 compression. V3.24.70, Omnipower 4 bar, GM IAT, Innovative wideband on downpipe.

Problem:

No vacuum leaks, compression good, have spark, fuel, adjusted timing and FPR a dozen times to get it idling and running decently. Made the few changes in ECMlink to get it changed over to Speed Density and bigger fuel system. Car starts and runs fune, it just wont build any boost at all.

What am I doing wrong here?

 

[Calan]

Given the duty cycle values shown above for ECMLink-controlled boost... if it won't build boost, it's a mechanical issue. It should hit at least 18 psi or so since the WGS is being locked until 15psi.

Check the boost control configuration, and check the wastegate for proper operation.

BTW - In the future, please just post a log instead of screenshots.

 

[TNOMUD]

Given the duty cycle values shown above for ECMLink-controlled boost... if it won't build boost, it's a mechanical issue. It should hit at least 18 psi or so since the WGS is being locked until 15psi.

Check the boost control configuration, and check the wastegate for proper operation.

BTW - In the future, please just post a log instead of screenshots.

Sorry, was having trouble posting log files.

Had a leak or two. I fixed them, still no boost. Wastegate is new and has no leaks. I pulled it apart, tested, reinstalled. Tested again. Its a Turbosmart 40mm External. TXS RFL WG is new as well, all welded stainless intake pipes welded. New Bellows. I have a boost leak tester, ran it up to 40 and no leaks.

 

[Calan]

Have you got a log with the WG parameters captured?

 

[TNOMUD]

Sorry, I was having issues attaching the log file

 

[Calan]

It really looks like the WG solenoid is hooked up wrong, or you have a mechanical problem. According to the log, you should be building boost.

As far as the tune...

1. You need a wideband.

2. You need to zero out your fuel and timing sliders, and use the DA tables to set your target AFR and timing

3. Speaking of DA tables, your OpenLoopMaxOct needs some work. You are targeting extremely rich AFRs. Try changing everything lower than 10.8 to 10.8.

 

[TNOMUD]

It really looks like the WG solenoid is hooked up wrong, or you have a mechanical problem. According to the log, you should be building boost.

As far as the tune...

1. You need a wideband.

2. You need to zero out your fuel and timing sliders, and use the DA tables to set your target AFR and timing

3. Speaking of DA tables, your OpenLoopMaxOct needs some work. You are targeting extremely rich AFRs. Try changing everything lower than 10.8 to 10.8.

I have an Innovative Wideband installed.

I will try zero-ing out the sliders, I stared with the old 16G tune as a Base and worked off that. OpenLoopMaxOct is a little rich, but I am running a new 10/1 comp motor and setup, erring on the side of caution until is running correctly.

The car runs great, idles great, it simply lacks boost. I can swing by Summit on the way home and get another EWGS. I noticed that as well.

Now, it was a MAF car, is having the empty MAF plug cutting power/signal to the EWGS somehow? The EWGS worked perfectly until the motor teardown.

Thank you for you assistance. Its been a while since I played with these cars and my old DSM had HKS stand alone. It was entireley different.

 

[TNOMUD]

Ok, still at a loss.


Replaced EWGS with a brand new spare I had never used.

Boost tested from outlet of turbo, ran it up to 45 PSI, so leaks. FMIC bellow popped at 60PSI


Turbo spins freely, no wobble.

I do get a CEL at WOT at upper RPM, but no codes show up. As soon as I back off the throttle ot goes away.


Here is a new log.

 

[Calan]

I have an Innovative Wideband installed.

But you aren't logging it, so it does us no good (and doesn't do much for you in the middle of a pull either).

I do get a CEL at WOT at upper RPM, but no codes show up. As soon as I back off the throttle ot goes away.

That is from the huge knock spike you are getting. Your CEL is set to come on at 3* of knock, and you are hitting upwards of 10* above 3700 rpm.

 

[TNOMUD]

But you aren't logging it, so it does us no good (and doesn't do much for you in the middle of a pull either).



That is from the huge knock spike you are getting. Your CEL is set to come on at 3* of knock, and you are hitting upwards of 10* above 3700 rpm.

To be honest, the Wideband was installed prior to my ownership. Everything is wired in all nice and neat, I am trying to get the boost deal situated before working on the smaller details like timing and AFR's. Everything worked perfectly prior to the old motor spinning a rod bearing. I am not 100% sure where they had everything wired into as far as the inputs go.

Just a related note: I am just running the car around the neighborhood at this time until its a little more sorted.

I do have the ability to make a quick change, run it down the street for a log, and back to the driveway.

Just a thought.

I have an external WG, after the turbo (02 Housing). DO I need to weld the flapper hole shut on the 60-1?

 

[Calan]

I have an external WG, after the turbo (02 Housing). DO I need to weld the flapper hole shut on the 60-1?

Well... is it just blowing open and dumping straight into the exhaust?

 

[TNOMUD]

Well... is it just blowing open and dumping straight into the exhaust?

That was my thought process too, but according to the millions of threads from dumdums like myself, this process was not necessary if mounting the EWG on the O2 housing.

Think I should weld it up?

 

[Calan]

I'm not familiar with your housing or setup, but if the WG outlet is plumbed into the exhaust before the external gate and allowing air to bypass the turbine, then yes.

 

[TNOMUD]

Turbonetics 60-1, Slowboy Manifold (cast iron), Turbosmart Compgate 40 External gate on the O2 housing. WG dump to atmosphere.





60 Series Turbochargers | www.TurboneticsInc.com - Boosting Since 1978 | turbochargers, intercoolers, wastegates, blow-off valves, controls, boosting systems, turbo kits, forced induction parts & accessories

Product Comp Gate40

 

[Calan]

Post up a pic of your turbo setup on the car.

 

[TNOMUD]

Sorry, its raining out
Dump tube and air filter not in photo

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[TNOMUD]

UPDATE: When I did a boost leak test at the inlet of the turbo, it had a small leak at the Compressor housing where the housing meets the bronze plate. I am not sure if this was big enough to cause no boost, but I sealed it up with Hylomar and am letting it cure.

 

[TNOMUD]

OK, cured all of my leaks, swapped WG pipes and now we are running. Still have some knock at 10PSI