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ECMlink No Start , Speed Density?

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Gjallarhorn

Probationary Member
11
2
Jun 7, 2017
Houston, Texas
So I am trying to get my car started after I rebuilt the engine, but it will not start. It cranks and sometimes idles for like a second and then dies down.
I've checked spark, fuel pump is kicking and set to 43 psi, battery is charged.

I think my speed density setup its where the problem is but I've checked that all the options in link are correct ,might just need to to tune the fuel tables?? but it is weird that the car will not even run (even if it is rough)

I'm hoping someone could shine some light on this, I really want to drive this car again after how long its been sitting. I've attached a log of my car cracking. Thanks in advance.

This are the mods I have installed at this time:

Engine: (assembled by Westside Performance)
- 2.0L 4G63T 85.5 mm / 0.020 overbore
- Wiseco 8.3:1 forged 85.5 mm / 0.020 Overbore
- Manley H/B rods
- All ARP hardware
- Brian Crowder 272 cams
- stock springs and retainers
- stock valves, valve job done
- Cometic headgasket 85.5 mm / 0.020 Overbore

Fuel:
- Walbro 225, no rewire (yet)
- FIC 650cc injectors
- Fuel labs AFPR

Air:
- Speed density / Omni-4 MAP / IAT Temp sensor

Other:
MHI Big 16g
VRSF Front mount
DSM Link v3
AEM Wideband o2 sensor
 

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Laptop doesn't want to log in here so I can't open the files. But the misc tab will be where speed density is set up. Iat is same but it'd be gm iat and baro will be Omni 4 bar. If neither are set up ecu won't see the readings. I'll get my other account on tomorrow so I can open the files
 
Laptop doesn't want to log in here so I can't open the files. But the misc tab will be where speed density is set up. Iat is same but it'd be gm iat and baro will be Omni 4 bar. If neither are set up ecu won't see the readings. I'll get my other account on tomorrow so I can open the files
I think I've managed to track down the issue and it looks like it is my omni 4 bar, on link it shows that it is staying at -28.9 Hg the entire time even when I try to start it, possibly a faulty sensor.

By the way, I have the omni 4 bar that hooks up to the top of the intake manifold where the stock MDP sensor goes, and uses the MDP connector so I have the pin assignment on MDP in dsmlink
 
Last edited:
on the MISC tab,
on "pin assignments for datalogging"
switch the omni 4 bar from the baro input pin to the MDP input pin

on the "ecu input locks"
try it with only the "lock rear o2" selected
 
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