Long story shortBought a car from a forum member who's local. It's a low milage 07 SoS Stage 2 car with some minor cosmetic issues.

​​​​​​Test drove great, drove great the 90 minute ride home. Drove great that night after swapping the wheels but ran into an issue the next day
Care cranks and starts but idles terrible and kills itself.
I found out it had the SoS PnP adapters so I turned those into hardwires by crimping them to the factory injector wiring. The plugs were half wet and half dry before so let's test now.

Car cranks better and starts but idles the same. Checked plugs now and they are wet. Replaced plugs and issue is still the same.

The car has 7k miles on the 9psi pulley and 3 years. Tuned by AV Tuning in Charleston SC running the stock cat.
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My next step is throw in a test pipe and see if the cat is causing the issue but I doubt it.
Any help would be great

 

This looks to be the only thing I could not recognize in the wiring. Other items seem to all be connected.
This was located under the driver knee area.

Update:

I have added 3 gallons of fuel to the carChanged the spark plugs on the car since the old ones were soaked in fuelSwapped ignition coils for known good 00-05 coilsCleaned and ziptied the map sensorTried jumping the car just cause
and now my only suspicion is the exhaust possibly choking the vehicle due to the factory cat being soaked with fuel. I'm going to try a test pipe and see if that solves the issue.

Any advice, help, links, prayer, or whatever would be appreciated
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Sounds like an ignition issue/lack of spark. I assume there is an aftermarket ecu in the car or flashpro? Or I suppose the ecu could just be dumping fuel to point of fuel washing the cylinders on start up. Any way to check the air fuel ratio on start up with Data logging or wideband?

 

It's on FlashPro being DBW
Funny enough in testing when I disconnect the throttle body I can get it to idle and slightly run.

It could be a spark issue however with new plugs and coils it still is the same.

I'm going to be checking with FlashPro tomorrow. Due to a storm our internet was down so I was unable to update it.

 

Yeah, you might try downloading a different/base map, just to see if you can get it to idle right again. Try and hone in on what might be the issue through process of elimination. If it's something mechanical, sensor gone bad giving false info, or tune/map went wonky. Maybe the map sensor or TPS is the issue since you unplugged the TB and it improved - assuming it still has these sensors incorporated. I admit I'm not as familiar with the DBW since all I've owned is the 00-05 years.

 

I was actually just talking about trying SoS' base map for the setup as well to at least have that ruled out. I may try borrowing a friend's map sensor or TPS to see if it alleviates the issue.

Sadly this is my first DBW in years and it's a lot different than 00-05 for this type of issue.

Edit:
So I flashed the base map the tuner sent the previous owner and the issue persisted. I removed the stock cat and swapped in a test pipe and the cat wasnt bad but the car will start better however it still idles poorly.

​​​​​​Again I tested fuses and components related to the DBW system Key-on Engine-Off. I'm guessing this is going to be something either really dumb and easy or expensive...

 

No Cel? Was thinking possible fuel injector went bad, but you mentioned multiple wet spark plugs, which would lead me to think multiple injectors - IF that were the cause, but having several go bad at once doesn't seem very likely, so id refrain from that rabbit hole for now and look elsewhere. It would be nice if you had a cel/misfire code and could figure out what cylinders at least.

 

Is the idle AF ratio very rich? Should be able to see it in datalog w/ flashpro. I'd say you go down the list of basics. Proper voltage? Check w/ a multimeter. No codes thrown? Can you keep the car running by opening the throttle a bit? What's the AF ratio? Oil pressure good? Maybe if everything checks out doesn't hurt to do a compression test..? If that's ok I'd consider a leakdown.. Honestly so many little things to check. Dig around see if there is any wiring that's been cut/modified..?

 

Welp this one was stupid. To just avoid doing a lot of tests this morning I bought some starting fluid, popped the brake booster hose off and sprayed it in there.
Car would start, idle, and rev great!

Well now I know it's fuel mixture. Starting in the bay I measured voltage to the injector clips. All good
Measured resistance of the injectors. All good.
I tried checking fuel pressure but it doesn't have a fuel pressure in the OBD2 however I did notice it would read fuel percentage and after 10 starts the fuel percentage would go down then return. Hmm

Well let's go to the rear. Removed the interior I could and my car has an RSG roll bar and soft top so it was REALLY fun getting the fuel assembly out.


The Wallbro 255 in the assembly was sitting at an angle and the plastic junction cut this gasket essentially having a fuel leak in the fuel tank due to it being a return system
So a friend (Ryan I don't know your screen name) helped/did turn #4 into a barb which we used SUBMERSIBLE FUEL HOSE to replace that section and some clips to make sure it stays in place.

It should be part of a kit to have a small gromet for it like #24 , a small barb, some hose cut to length, and 2 constant tension clamps.

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This could very well be an issue on a non-boosted car if you are reading this thinking it's your issue.

 

Great trouble shooting work and find!